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2023-08
News
Application of Zhengying BJ Burner
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Introduction to the working principle of low nitrogen burner
- Categories:News
- Author:Shenzhen Zhongli Weiye Electromechanical Equipment Co., Ltd.
- Origin:Shenzhen Zhongli Weiye Electromechanical Equipment Co., Ltd.
- Time of issue:2021-06-11 15:06
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Introduction to the working principle of low nitrogen burner
Information
1. Stage burner
The stage burner designed according to the principle of staged combustion makes the fuel and air mix and burn in stages. Since the combustion deviates from the theoretical equivalence ratio, it can reduce the generation of nitrogen.
2. Self-recirculating burner
One is to use the pressure head of the combustion air to inhale part of the combustion flue gas, enter the burner, and mix and burn with the air. Due to flue gas recirculation, the heat capacity of the combustion flue gas is large, the combustion temperature is lowered, and the NOx is reduced. Another type of self-recirculating burner is to directly recirculate part of the flue gas in the burner and add it to the combustion process. This kind of burner has the dual effects of suppressing nitrogen oxides and saving energy.
3. Concentrated burner
The principle is to make part of the fuel burn too rich and the other part burn too lean, but the overall air volume remains unchanged. Since both parts are burned off-stoichiometric, the NOx is very low. This type of combustion is also known as off-stoichiometric or non-stoichiometric combustion.
4. Split flame burner
The principle is to divide a flame into several small flames. Due to the large heat dissipation area of the small flames and the lower flame temperature, the "thermal reaction NO" decreases. In addition, the small flame shortens the residence time of oxygen, nitrogen and other gases in the flame, and has obvious inhibitory effects on "thermal reaction NO" and "fuel NO".
5. Mixing-promoting burner
The residence time of the flue gas in the high temperature area is one of the main factors affecting the amount of NOx generation. Improving the mixing of combustion and air can reduce the thickness of the flame surface. Under the condition of constant combustion load, the flue gas is at high temperature on the flame surface. The residence time in the zone is shortened, thereby reducing the amount of NOx generated. Mixing-promoting burners are designed according to this principle.
6. Low nitrogen pre-combustion chamber burner
The pre-combustion chamber is a high-efficiency, low-nitrogen staged combustion technology developed and researched in China in the past 10 years. The pre-combustion chamber is generally composed of primary air (or secondary air) and a fuel injection system, and the fuel and primary air are rapidly mixed.
A fuel-rich mixture is formed in the primary combustion zone in the pre-combustion chamber. Due to lack of oxygen, only part of the fuel is burned, and the fuel precipitates volatiles in the primary flame zone with lean oxygen and lower flame temperature, thus reducing the generation of NOx.
The essence of any low-nitrogen combustion technology is to control the combustion process. According to 20 years of experience in the development and use of low-nitrogen burners, to achieve truly sustainable and reliable low-nitrogen combustion in industrial boilers, it is not enough to just replace or modify the burner, and it is also necessary to upgrade the combustion control device.
The nitrogen oxides produced in the combustion process are mainly NO and NO2, which are generally referred to as nitrogen oxides NOx. A large number of experimental results show that the nitrogen oxides emitted by the combustion device are mainly NO, accounting for about 95% on average, while NO2 only accounts for about 5%.
Generally, NO generated by fuel combustion mainly comes from two aspects: one is the oxidation of nitrogen in the air used for combustion (combustion air); the other is the thermal decomposition and reoxidation of nitrogen compounds contained in the fuel during the combustion process. In most combustion devices, the former is the main source of NO, which we refer to as "thermal reaction NO", the latter as "fuel NO", and there is also "prompt NO".
The NO formed during combustion can react with intermediates containing nitrogen atoms to reduce NO to NO2. In fact, in addition to these reactions, NO can also form NO2 with various nitrogen-containing compounds. When the reaction reaches chemical equilibrium in the actual combustion device, the ratio of [NO2]/[NO] is very small, that is, the conversion of NO to NO2 is very small and can be ignored.
NOx is produced by combustion, and the combustion method and combustion conditions have a great influence on the formation of NOx. Therefore, NOx can be reduced by improving combustion technology. The main ways are as follows:
Select fuels with lower N content, including fuel denitrification and conversion to low-nitrogen fuels;
Reduce the excess air coefficient and organize excessively rich combustion to reduce the oxygen concentration around the fuel;
In the case of low excess air, the temperature peak is reduced to reduce "thermal reaction NO";
At lower oxygen concentrations, increase the residence time of combustibles in the flame front and in the reaction zone.
The specific methods usually used to reduce the formation and emission of NOx are: staged combustion, afterburning method, low oxygen combustion, concentration deviation combustion and flue gas recirculation.
06
2021-07
News
Introduction of low nitrogen burner
Low nitrogen burners and low nitrogen oxide burners refer to burners with low NOx emissions during fuel combustion. Low NOx burners can reduce NOx emissions during combustion. The nitrogen oxides produced in the combustion process are mainly no and NO2, which are commonly referred to as nitrogen oxides NOx.
02
2021-07
News
Principle of low nitrogen burner
The precombustion chamber of low nitrogen burner is a high-efficiency, low nitrogen staged combustion technology developed and researched in China in the past 10 years. The precombustion chamber is generally composed of primary air (or secondary air) and fuel injection system. The fuel and primary air are rapidly mixed to form a fuel rich mixture in the primary combustion area of the precombustion chamber. Due to lack of oxygen, only part of the fuel is burned, and the fuel releases volatiles in the oxygen poor and low flame temperature primary flame area, Thereby reducing NOx generation. Any low nitrogen combustion technology is essentially a technology that controls the combustion process. According to the 20-year experience in the use of low nitrogen burners in Europe and the United States, it is not enough to replace or transform the burners for industrial boilers to achieve truly sustainable and reliable low nitrogen combustion. It is also necessary to upgrade the combustion control device, such as adding a "timely control" combustion control device. The mixing promoting burner is designed according to this principle.
30
2021-06
News
The difference between low nitrogen burner and ordinary burner
Low-nitrogen burner is a general term for a burner that optimizes overall emission and combustion technology on the basis of the original boiler to reduce NO3 and nitrogen oxides. Low-nitrogen burners, by adjusting the combustion air and combustion head, can obtain the best combustion parameters. According to the operation and operation mode, it is divided into: one-stage, two-stage, progressive two-stage and progressive two-stage with proportional regulator, etc. (the latter implements proportional adjustment operation)
Low NOx burners are roughly divided into the following categories: stage burners, self-recirculation burners, rich-lean burners, split flame burners, hybrid-promoting burners, low NOx pre-chamber burners, etc. Each has its own advantages.
What is the difference between a low nitrogen burner and an ordinary burner?
1. Save costs and reduce expenses
2. Time saving: The newly purchased boiler has a long cycle and a long waiting time, which affects production, while the low-nitrogen transformation requires only a short period of construction to complete the transformation.
3. The subjective factor of low-nitrogen transformation is caused by the general environment. In the long run, it is a good living environment for future generations. At present, it is a requirement of documents. Therefore, it is necessary to pass this level in order to produce.
Shenzhen Zhongli Weiye Electromechanical Equipment Co., Ltd., on the basis of absorbing domestic and foreign advanced technology and craftsmanship, has accumulated many years of wisdom and experience in burners, and the accuracy, stability and reliability of products are in an important position in China. Our company produces Zhongli Weiye brand burner has been gradually upgraded from the first generation product to the current third generation product, and is still developing higher-end products. It is an advanced ultra-low nitrogen burner enterprise in China. With advanced technology, excellent quality and perfect service, our company's products rank in the forefront of the domestic super-burner industry, and have become a well-known domestic brand, with products all over the country, we actively advocate; market-oriented, scientific research The leader, with innovation as a means, actively explores domestic and foreign markets.
28
2021-06
News
Types of combustion of low nitrogen burners
1. Stage burner
The stage burner designed according to the principle of staged combustion makes the fuel and air mix and burn in stages. Since the combustion deviates from the theoretical equivalence ratio, it can reduce the generation of nitrogen.
2. Self-recirculating burner
One is to use the pressure head of the combustion air to inhale part of the combustion flue gas, enter the burner, and mix and burn with the air. Due to flue gas recirculation, the heat capacity of the combustion flue gas is large, the combustion temperature is reduced, and the NOx is reduced. Another type of self-recirculating burner is to directly recirculate part of the flue gas in the burner and add it to the combustion process. This kind of burner has the dual effects of suppressing nitrogen oxides and saving energy.
3. Concentrated burner
The principle is to make part of the fuel burn too rich and the other part burn too lean, but the overall air volume remains unchanged. Since both parts are burned off-stoichiometric, the NOx is very low. This type of combustion is also known as off-stoichiometric or non-stoichiometric combustion.
4. Split flame burner
The principle is to divide a flame into several small flames. Due to the large heat dissipation area of the small flames and the lower flame temperature, the "thermal reaction NO" decreases. In addition, the small flame shortens the residence time of oxygen, nitrogen and other gases in the flame, and has obvious inhibitory effects on "thermal reaction NO" and "fuel NO".
5. Mixing-promoting burner
The residence time of the flue gas in the high temperature area is one of the main factors affecting the amount of NOx generation. Improving the mixing of combustion and air can reduce the thickness of the flame surface. Under the condition of constant combustion load, the flue gas is at high temperature on the flame surface. The residence time in the zone is shortened, thereby reducing the amount of NOx generated. Mixing-promoting burners are designed according to this principle.
6. Low nitrogen pre-combustion chamber burner
The pre-combustion chamber is a high-efficiency, low-nitrogen staged combustion technology developed and researched in my country in the past 10 years. The pre-combustion chamber is generally composed of primary air (or secondary air) and a fuel injection system, and the fuel and primary air are rapidly mixed.
A fuel-rich mixture is formed in the primary combustion zone in the pre-combustion chamber. Due to lack of oxygen, only part of the fuel is burned, and the fuel precipitates volatiles in the primary flame zone with lean oxygen and lower flame temperature, thus reducing the generation of NOx.
The essence of any low-nitrogen combustion technology is to control the combustion process. According to 20 years of experience in the development and use of low-nitrogen burners, to achieve truly sustainable and reliable low-nitrogen combustion in industrial boilers, it is not enough to just replace or modify the burner, and it is also necessary to upgrade the combustion control device.
26
2021-06
News
Gas Burner
According to its working principle, a burner can be defined as a device that converts substances into heat through the chemical reaction of combustion - that is, air and fuel are mixed in an appropriate proportion through a premixing device to make it fully burned. The burner is a thermal energy device that feeds fuel and air into the furnace according to the required concentration, velocity, turbulence and mixing mode, and enables the fuel to stably ignite and burn in the furnace. The fuel is mainly fuel oil and gas. Generally used in small and medium oil or gas boilers. Gas burners are divided into natural gas burners, city gas burners, etc.
According to the combustion control mode of the burner, it is divided into: single-stage fire burner, double-stage fire burner, proportional adjustment burner.
According to the fuel atomization method, it is divided into: mechanical atomizing burner, medium atomizing burner;
According to the structure, it is divided into: integral burner and split burner. Among them, the split burner is mainly used in industrial production, and its main feature is that the combustion system, air supply system, control system, etc. are all disassembled and installed. This kind of machine is mainly suitable for large equipment or special working environments such as high temperature.
Relatively speaking, commercial burners are relatively inexpensive due to mass production and low specialization requirements in the market supply chain, while split burners have relatively high specialization requirements, and Most require a professional installation team, and the market sales price is relatively much higher than the same period last year.
The gas burner construction consists of the following 5 systems:
1. Air supply system The function of the air supply system is to send air with a certain wind speed and air volume into the combustion chamber. Its main components are: shell, fan motor, fan impeller, air gun fire pipe, damper controller, damper baffle , Cam adjustment mechanism, diffuser plate.
2. Ignition system
The function of the ignition system is to ignite the mixture of air and fuel, and its main components are: ignition transformer, ignition electrode, electric fire high-voltage cable.
3. Monitoring system
The function of the monitoring system is to ensure the safe and stable operation of the burner, and its main components include a flame monitor, a pressure monitor, and a temperature monitor.
4. Fuel system
The function of the fuel system is to ensure that the burner burns the required fuel. The fuel system of the oil burner mainly includes: oil pipe and joint, oil pump, solenoid valve, nozzle, heavy oil preheater. Gas burners mainly include filters, pressure regulators, solenoid valve groups, ignition solenoid valve groups, and fuel butterfly valves.
5. Electronic control system
The electronic control system is the command center and contact center of the above systems. The main control element is the program controller. Different burners are equipped with different program controllers. The common program controllers are: LFL series, LAL series, LOA series, LGB series , the main difference is that the time of each program step is different.
When the combustible gas (city gas, natural gas, liquefied petroleum gas) is controlled by the microcomputer control system to enter the combustion head of the burner according to the program, the primary air is mixed with the combustible gas, ignited and burned, and the secondary air supports combustion to achieve full combustion. The combustion state is detected and controlled by the flame automatic tracking system. When the combustion fails (oxygen deficiency in the combustion chamber, underpressure of combustible gas, cut-off of combustible gas, insufficient gas volume, etc.), the control system issues an instruction, and the solenoid valve of the gas supply system is quickly closed. , cut off the gas power supply, the burner will automatically shut down after purging, indicating a fault. 1) High thermal efficiency: It can adapt to pressure fluctuations and adjust the primary air distribution by itself (that is, if the gas pressure is large, the primary air is more inhaled; the gas pressure is small, the primary air is inhaled), the combustion is sufficient, and the thermal efficiency is high;
(2) High safety: The burner is equipped with a small fire. When the boiler starts, light a small fire first. When the small fire burns normally and stably, the automatic control system opens the main gas valve, and the fuel can enter the boiler for normal combustion without deflagration;
( 3 ) Strong fuel adaptability: This burner can be used for natural gas, liquefied petroleum gas, coal gas, liquefied petroleum gas mixture and other types of gas only by replacing a few parts
Because the main fuels of gas burners are natural gas, liquefied petroleum gas, city gas and other combustible gases, these fuels are flammable and explosive
25
2021-06
News
Low nitrogen combustion technology
Determining the formation of NOx is the temperature of the combustion zone and the amount of excess air. Therefore, the low NOx combustion technology is to prevent the formation of NOx and reduce its emission by controlling the temperature and air volume in the combustion area.
24
2021-06
News
Daily maintenance of the burner
1. Daily maintenance and maintenance 1) Always keep all surfaces clean. 2) When the equipment is stopped, lubricate each rotation of the quick-opening blind plate (flange cover) in time according to the regulations. The low-nitrogen burner of Jincheng boiler and the lead screw of the opening and closing parts should be coated with lubricating grease. Other parts should also be coated as much as possible. Lubricating grease. For the parts that cannot be coated with grease, 10# or 20# oil can be added. 2. Maintenance and maintenance during operation 1) It is recommended that the operator be responsible for the usual maintenance of the equipment. 2) Always keep the surface of the equipment clean. 3) Monitor the reading of the differential pressure gauge at any time. When the differential pressure in use reaches 0.02Mpa, the filter element should be flushed. 3. Inspection period 1) The periodic inspection of this equipment must be carried out in strict accordance with the relevant provisions of Chapter VI of the "Regulations". 2) The equipment shall be inspected at least once a year, the wall thickness of the equipment shall be measured, and the non-destructive testing shall be carried out on the pressure welding seam of the equipment every two years. All inspection and testing results shall be recorded in the technical file of the equipment. 3) When there is pressure inside the equipment, no maintenance is allowed. For maintenance under special circumstances, it must be carried out in strict accordance with the provisions of Article 122 of the "Regulations". 4. Maintenance when parked 1) When the equipment is parked, the liquid in the equipment should be drained. 2) Close all valves. 3) Clean the surface of the equipment. 4) All rotating parts are coated with anti-grease. 5) Cover all the equipment with canvas to prevent dirt from depositing on the surface of the equipment. How can the burner be ignited more safely? How can the burner ignite more safely? Answer: In the past when the heating furnace was in operation or during operation, there have been furnace accidents in the pictures of the boiler's low-nitrogen burner. In the light, the parts of the furnace were damaged, and the model of the boiler's low-nitrogen burner was damaged, and the whole furnace was blown up in the severe case. . The main reason for the furnace is that when the burner is ignited, the burner is just lit and then extinguished, or the burner is not lit and the oil has entered the furnace. Inside. Occurs during operation of the furnace due to insufficient air and incomplete combustion. In the flue gas of the furnace, it will occur after reaching a certain concentration. This situation often occurs in forced ventilation heating furnaces, the principle of boiler low nitrogen burner, such as in 1982 in the decompression furnace of Wuhan petrochemical plant atmospheric and decompression unit, because the opening of the ventilator's population baffle is too small , The amount of air into the furnace is insufficient, resulting in incomplete combustion, resulting in the furnace. What is a low-nitrogen flare burner? A: Flare is a facility that processes and emits combustible gas through combustion, including overhead flares, ground flares, etc. It consists of discharge pipeline, liquid separation equipment, flame arresting equipment, flare burner, ignition system, flare tube and other components. The torch burner is an integral part of the torch system. Simply speaking, it is a burner. There are many torch burners in the torch system. The main function is to process and discharge combustible gas through combustion.
23
2021-06
News
Influence of Low Nitrogen Burner Retrofit on Boiler Operation
Under the requirements of environmental protection policies, the industry also attaches great importance to energy conservation and emission reduction measures. Low nitrogen combustion technology has certain advantages in environmental protection, but at the same time, it also has a certain impact on the operation of boilers, so it is necessary to deal with problems arising from new environmental protection technologies. In terms of measures, we should further strengthen and strive for the greatest environmental protection mechanism for the sustainable development of the industry. This article discusses the relevant content, which has certain practical significance.
22
2021-06
News
Analysis on the existing problems and countermeasures of boiler low-nitrogen burner after renovation
In recent years, my country's environmental pollution has been serious, and smog has caused a certain degree of impact on all aspects of people's life and work. Under the strict requirements of the national environmental protection policy, power companies attach great importance to energy conservation and emission reduction, and formulate and implement reasonable and effective measures. For a long time in the future, my country will still mainly use coal-fired generator sets to generate electricity, but the boilers of many power generation companies cannot meet the current national environmental protection requirements.
20
2021-06
News
How low nitrogen burners reduce NOx emissions
Low NOx burners can reduce NOx emissions Low NOx burners are those with low NOx emissions during fuel combustion. The NOx emission of traditional natural gas boiler burners is usually around 120~150mg/m3. The NOx emission of low nitrogen burners is usually around 30~80 mg/m3. NOx emissions below 30 mg/m3 are usually called ultra-low nitrogen burners. From the perspective of the generation mechanism of NOx, the NOx control technology of oil/gas boilers mainly focuses on two directions: reducing the combustion flame temperature and reducing the oxygen content. Therefore, an important measure to suppress the generation of NOx is to start with the burner. So what is a low nitrogen burner? What is its principle?
19
2021-06
News
Types and functions of low nitrogen burners
Introduction of low-nitrogen burner: The burner is an important equipment on industrial oil-fired boilers and gas-fired boilers. It ensures the stable combustion of fuel and the complete combustion of fuel. Therefore, in order to suppress the generation of NOx, we must start from the burner. According to the combustion technology for reducing NOx, low NOx burners are broadly divided into the following categories:
18
2021-06
News
What is the difference between a low nitrogen burner and an ordinary burner
Low-nitrogen burner is a general term for a burner that optimizes overall emission and combustion technology on the basis of the original boiler to reduce NO3 and nitrogen oxides. Low-nitrogen burners, by adjusting the combustion air and combustion head, can obtain the best combustion parameters. According to the operation and operation mode, it is divided into: one-stage, two-stage, progressive two-stage and progressive two-stage with proportional regulator, etc. ( the latter implements proportional adjustment operation )
16
2021-06
News
How to choose low nitrogen burner for gas boiler
On April 1, 2017, Beijing officially implemented the most stringent nitrogen oxide emission standards for boilers, requiring that the emission of nitrogen oxides from newly built boilers is less than 30 mg, and the emission of nitrogen oxides from boilers in use is less than 80 mg. In the future, this standard It will be gradually applied to various provinces and cities across the country. For most owners of gas-fired boilers currently in use in the market, it means that they must be replaced with low-nitrogen burners in order to meet the emission requirements.
15
2021-06
News
Shenzhen Zhongli Weiye Electromechanical Equipment Co., Ltd.
At present, low-nitrogen boilers are the first choice for many users, because low-nitrogen boilers have incomparable advantages over ordinary boilers. Recently, a customer came to us, Dongfang Yongjie, and asked what is the difference between the low-nitrogen burner of the boiler and the ordinary boiler ? Our technicians gave an answer to this question.
11
2021-06
News
Introduction to the working principle of low nitrogen burner
The stage burner designed according to the principle of staged combustion makes the fuel and air mix and burn in stages. Since the combustion deviates from the theoretical equivalence ratio, it can reduce the generation of nitrogen.
10
2021-06
News
Natural Gas Burner
According to the combustion control mode of the burner, it is divided into : single-stage fire burner, double-stage fire burner, proportional adjustment burner.
According to the fuel atomization method, it is divided into : mechanical atomizing burner, medium atomizing burner;
09
2021-06
News
Research on low nitrogen combustion mechanism and technology of gas boiler
Basic Principles of Nitrogen Chemistry in Methane-Air Combustion Process
The combustion theory divides the generation of NOx into thermal NOx (Thermal NOx), fast NOx (Prompt NOx) and fuel NOx (Fuel NOx). The nitrogen content of natural gas is low, therefore, fuel-based NOx is not its main control type. Thermal NOx refers to the oxidation of N2 in the combustion air at high temperature to form NOx. Regarding the generation mechanism of thermal NOx, the Geridovich mechanism is generally used: when the temperature is lower than 1500 °C, the amount of thermal NOx generated is very small; when the temperature is higher than 1500 °C, the reaction rate will increase for every 100 °C increase in temperature. 6~7 times. In the actual combustion process, since the temperature distribution in the combustion chamber is not uniform, if there are local high temperature areas, more NOx will be generated in these areas, which may play a key role in the generation of NOx in the entire combustion chamber. Rapid NOx When the hydrocarbon fuel is burned and the fuel is rich, the reaction zone will generate NOx rapidly. In the actual combustion process, various factors change independently, and many parameters are constantly changing. Even the combustion of simple gas fuel must experience the mixing of fuel and air, and the combustion produces flue gas until it leaves the furnace. . The temperature of the furnace, the mixing degree of fuel and air, the residence time of flue gas in the furnace and other parameters that have a great impact on NOx emissions are constantly changing.
07
2021-06
News
Introduction of Low-nitrogen Combustion Transformation of Gas-fired Boilers
Among the pollutants in boilers, nitrogen oxide emissions have the greatest impact on the atmosphere. Therefore, in the national and local boiler pollutant emission standards, the control of this indicator is the most stringent. At present, the NOx emission limit of gas-fired boilers is the most stringent, and the requirements are between 30-200 in different regions. If some boilers are installed earlier, the current nitrogen oxide emission requirements of the boilers in the region are more stringent, and the exhaust gas emission after combustion of the burner cannot meet the latest national pollutant emission standards, then it is necessary to carry out low-nitrogen combustion transformation. At present, it is mainly the transformation of gas boiler burners.
06
2021-06
News
What is the principle of low nitrogen burner
From the perspective of the generation mechanism of NOx, the NOx control technology of oil/gas boilers mainly focuses on two directions: reducing the combustion flame temperature and reducing the oxygen content. Therefore, an important measure to suppress the generation of NOx is to start with the burner. So what is a low nitrogen burner? What is its principle?
05
2021-06
News
Natural gas boiler low nitrogen burner
Burners are also called burners, which can be divided into oil burners, gas burners, and biomass burners according to fuel; kiln burners and boiler burners according to the objects of use; industrial burners, Civil burners and special burners. Among them, oil burners are divided into light oil (such as diesel) and heavy oil burners (such as waste oil), gas burners are divided into natural gas burners, liquefied gas burners, city gas burners, biogas burners, etc.
04
2021-06
News
What is the difference between low nitrogen burner and ordinary burner
1. Advantages:
1. Because the combustion area is stretched, part of the combustion intensity is weakened, and the formation of NOx is suppressed within a certain period of time .
2. Low load combustion is stable. Because the lower air volume is reduced, the fuel is also very stable when the fuel is burned at a low concentration. It can even achieve stable combustion at 40% load.
02
2021-06
News
Introduction and application of low nitrogen combustion technology
China's "Thirteenth Five-Year Plan for Energy Development", the proportion of non-fossil energy consumption will be increased to more than 15%, and the proportion of natural gas consumption will strive to reach 10%. As a clean energy, natural gas combustion products hardly contain sulfur dioxide and dust particles. The pollutant emissions are nitrogen oxides - NOx. In addition to harming human health, NOx is also the main driver of acid rain, photochemical smog and ozone destruction, and an important culprit in the production of atmospheric ultra-fine particulate matter PM2.5.
31
2021-05
News
Technical requirements for low-nitrogen transformation of gas-fired boilers
1. The existing gas-fired boiler low-nitrogen emission transformation methods include replacing the low-nitrogen burner or the overall replacement of the boiler, where the replacement of the low-nitrogen burner refers to the use of a full premixed burner or the use of staged combustion and a flue gas recirculation device. The user should choose an appropriate transformation method according to the furnace, boiler steam ton and safety quality, etc. It is not recommended to use a full premix burner for gas-fired boilers above 20 steam ton per hour.
29
2021-05
News
Condensing and low-nitrogen combustion technology for gas boilers
Mix the air and gas evenly and burn them completely and quickly. The full premixing technology is to inhale the gas and air through the venturi, stir them by the fan, and mix them completely before entering the combustion head. The premixing cavity will fully and evenly disperse the gas and air molecules again. , making the mix more complete. Like a piece of wood and a pile of sawdust, sawdust burns faster and more fully.
28
2021-05
News
Analysis on the existing problems and countermeasures of boiler low-nitrogen burner after renovation
In recent years, my country's environmental pollution has been serious, and smog has caused a certain degree of impact on all aspects of people's life and work. Under the strict requirements of the national environmental protection policy, power companies attach great importance to energy conservation and emission reduction, and formulate and implement reasonable and effective measures.
24
2021-05
News
Explanation of the working principle of low nitrogen burner
Low NOx burners and low NOx burners refer to burners with low NOx emissions during the fuel combustion process. The selection of low NOx burners can reduce the NOx emissions during the combustion process. The nitrogen oxides generated in the combustion process are mainly NO and NO2, and these two nitrogen oxides are generally referred to as nitrogen oxides NOx. Many test results show that the nitrogen oxides emitted by combustion devices are mainly NO, accounting for about 95% on average, while NO2 only accounts for about 5%.
21
2021-05
News
Several elements of the working principle of condensing boilers
This value is obtained in the complete combustion of natural gas and oxygen. In the actual combustion process, natural gas is mixed with excess air. This increases the exhaust heat loss and limits the condensation of water vapor in the flue gas (such as the primary, secondary, and tertiary air generated in traditional combustion) due to the use of air mixing technology in Vaillan condensing boilers throughout the combustion process.
20
2021-05
News
The low nitrogen burner is divided into several working stages
From the perspective of the generation mechanism of NOx, the NOx control technology of oil/gas boilers mainly focuses on two directions: reducing the combustion flame temperature and reducing the oxygen content. Therefore, an important measure to suppress the generation of NOx is to start with the burner. So what is a low nitrogen burner? What is its principle?
19
2021-05
News
What are the working principles of ultra-low nitrogen burners?
Ultra-low NOx burners are those with low NOx emissions during fuel combustion. The NOx emission of traditional natural gas boiler burners is usually around 120~150mg/m³. The NOx emission of ultra-low nitrogen burners is usually around 30~80 mg/m³.
17
2021-05
News
How Condensing Boilers Work
At present, the main low-nitrogen condensing boilers in the gas boiler market are mainly from the perspective of low-nitrogen emission technology. With my country's increasing attention to the environment and climate, the emission control of air pollutants has been strengthened, and the emission standards of gas-fired boilers have also been pushed back.
17
2021-05
News
What is a low nitrogen burner?
The low nitrogen burner is a device that adds a blower, an induced draft fan , a frequency converter, a control valve and multiple circuits to a traditional burner to allow clean energy and burner operations to provide more efficient heat energy for the boiler.
09
2020-10
News
Henan ultra-low nitrogen burner manufacturers talk about: the impact of sanitary environment on ultra-low nitrogen burners
Today, Henan ultra-low nitrogen burner manufacturer explained to you that the sanitary condition of the boiler room directly affects the failure rate and life of the burner. Why do they say that the sanitary condition of the boiler room directly affects the failure rate and life of the burner? I often encounter such problems when working in ultra-low nitrogen burner manufacturers : I received a customer maintenance call, sent a master over to the customer's boiler room. What I saw is that the sanitary environment is particularly dirty and messy . The final cause of the failure was also that the boiler room was too dirty .
25
2020-09
News
Condensing boiler burner manufacturers talk about: the advantages of condensing low nitrogen pressure boiler
Condensing low nitrogen pressure boilers are widely used in major civil and commercial places, such as civil duplex villas and commercial hotels. It is easy to operate, adopts PLC controller, and has high configuration. The operation of the boiler can be controlled by simply touching the buttons on the screen during the whole process, thus greatly reducing the cost of manual supervision after the boiler is used.
19
2020-09
News
metal fiber burner
The metal fiber burner belongs to the premixed gas surface combustion, and the premixed and uniform gas-air mixture flows to the burner head and burns on the surface layer of the metal fiber fabric with uniform air permeability.
金属纤维表面燃烧不仅具有红外燃烧的特点，而且低污染排放的特点引起了人们的广泛注意。金属纤维燃烧器的头部是由极细金属纤维制成的。金属纤维既可以烧结在一起，形成刚性而多孔的板材，也可以通过纺织过程制成柔软的织物。两种结构都提供了透气性很强的均匀介质。既可以在热辐射模式下又可以在蓝焰模式下燃烧，而且能在两种模式下实现燃烧平移转换。
金属纤维燃烧器具有良好的抗腐蚀性和抗氧化性。这给予了燃烧器超长的使用寿命。当燃烧器在封闭的环境中，表面温度和辐射效率将会提高。金属纤维燃烧器长寿命工作的最高温度为1100℃。
金属纤维燃烧器具有抗热冲击性能，由于采用了100%的金属，金属纤维燃烧器甚至可以经受极限状态的热冲击。水泼在燃烧器的表面上将会被蒸发，而不会在燃烧器表面留下任何损坏的痕迹。此外，金属纤维燃烧器还具有良好的抗机械冲击性能、逆火安全性能和快速冷却性能。
金属纤维燃烧器的柔性，使燃烧器的头部可以做成任何形状。如扁平形、圆筒形、圆锥形、凹形、球形等。
金属纤维燃烧器红外辐射的特性和低污染排放的特点，使其应用于很多行业，包括家用烤箱、工业炉、食品行业、纺织业、汽车业、玻璃制造业、钢铁铸造业等。
19
2020-09
News
Low NOx Burner Performance
Low NOx burners : By adjusting the combustion air and the combustion head, optimum combustion parameters can be obtained.
技术性能：
● 单段火、两段火、两段火渐进式/比例调节
● 能适应任何类型的燃烧室。
● 空气和燃气在燃烧头混合。
● 通过调节燃烧空气和燃烧头，可以获得最佳的燃烧参数。
● 无须把燃烧器从锅炉上拆下，就可直接取下混合装置，从而可以方便的进行维修保养。
● 采用伺服电动机来进行第一、二段空气流量调节，并且当
燃烧器停止运行时，风门关闭以减少炉内热量损失。
● 可以给阀组加一个阀的密封控制装置。
● 采用一个法兰和一个绝缘密封圈与锅炉连接固定；配有一个4孔和7孔联接器。
● 根据要求可提供大于标准长度的鼓风管。
深圳市中力伟业机电设备有限公司在吸取国内外先进技术和工艺的基础上，集多年来在燃烧器的智慧和经验，产品的精度，稳定性，可靠性居国内重要地位，专门致力于为全球工业加热领域提供高效、节能、环保的燃气加热系统解决方案，业绩遍布各类热加工设备和系统。主要产品有：超低氮燃烧器、冷凝锅炉燃烧器、金属表面燃烧器、全预混表面燃烧器等，公司始终坚持“以人为本，客户至上”的价值观，深受广大客户的信赖。
11
2020-09
News
Low-nitrogen burner manufacturers' views on the retrofit of low-nitrogen burners
In recent years, some low-nitrogen burner manufacturers have adopted the method of performing oxygen-deficient combustion in the lower part of the furnace and supplementing oxygen through the upper part of the burnt air. Through the use of this low nitrogen burner, some conclusions have been drawn, and through these conclusions, we will analyze its advantages and disadvantages and share with you.
10
2020-09
News
Brief introduction of low nitrogen burner manufacturers: the working principle of low nitrogen burners
Low-nitrogen burner is a general term for a device that makes fuel and air spray and mix and burn in a certain way. So what is its working principle ? Let 's take a look at the low-nitrogen burner manufacturer below.
01
2020-09
News
Which low nitrogen burner manufacturer is good
Now, I believe everyone is very concerned about air quality. The "smoke" produced in recent years has caused headaches for many families with children or people with related diseases. But I don't know if you understand that one of the reasons for smog is NOx, how is NOx formed? Nitrogen oxides are formed due to high temperature, and the higher the temperature, the easier it is to form more nitrogen oxides. In our daily life, the use is relatively large and versatile, and now, the place where a lot of nitrogen oxides are generated is the boiler. To control this, people opt for low nitrogen burners . So, which low-nitrogen burner manufacturer is the best ? how to choose? Let's find out .
07
2020-08
News
Characteristics of Condensing Boiler Burners and Related Combustion Devices
The general characteristics of condensing boiler burners are high moisture content, low ash content, high volatile content, low calorific value, and irregular shape. ) can be directly burned, other fuels such as straw, branches, etc. must be treated before burning to enable cloth and ensure uniform burning.
05
2020-08
News
How is the metal surface burner strengthened in the production process?
Among the many products of Zhongli Weiye, the metal surface burner as an industrial boiler is easily overlooked. Today, the editor has compiled some information, focusing on how to strengthen the metal surface burner in the production process?
03
2020-08
News
Remanufacturing of low-nitrogen burner manufacturers creates business opportunities for CNC systems
At present, my country has nearly 7 million low-nitrogen burners, which has become the largest country in the world. However, the overall level of low-nitrogen burner manufacturers is still relatively backward. Many products before the 1980s are still in use, and it is difficult to meet the requirements of machining accuracy. According to statistics, more than 60% of low-nitrogen burner manufacturers in China have worked for more than 10 years. These low-nitrogen burner manufacturers may face major repairs and upgrades in the next 5-10 years, or even functional obsolescence or technology elimination, forming a considerable scale of potential resources for recyclable remanufacturing.
31
2020-07
News
Zhongli Weiye brings you how to choose boiler burner products
I believe that many friends will encounter some problems more or less when purchasing burner products. To solve this problem, we first need to understand the burner. The selection of the burner of the oil and gas boiler should be based on the structural characteristics and performance requirements of the boiler body, and the correct comparison should be made in combination with the user's usage. A
Generally, the following principles can be followed:
28
2020-07
News
Safety Rules for Boiler Burners We Should Know
Friends know that safety is the most important thing when using a boiler burner . How to do it? Then the safety rules are very important. The following are some points we need to be familiar with
1. The room where the boiler burner is located: special vents are required, and the settings of the vents must meet local requirements. The room should be kept clean.
25
2020-07
News
Burner manufacturer Zhongli Weiye analyzes common classification of burners
What are the common classifications of low nitrogen burner manufacturers Zhongli Weiye analysis burners? Burners are the core components of various heating equipment (industrial furnaces, boilers, drying equipment, etc.), providing heat for related processes. There are many types of burners, which can be classified according to the fuel used by the burner or the purpose of the burner.
21
2020-07
News
What are the types and characteristics of liquid fuels for boiler burners?
What are the types and properties of liquid fuels for boiler burners? There are three types of liquid fuels commonly used in boiler burners: heavy oil, residual oil and light diesel oil. Fuel oil has the characteristics of high carbon and hydrogen content, less moisture, and high calorific value, generally 40600 ~ 43100kj/kg.
17
2020-07
News
Low NOx Burner Manufacturer Shenzhen Zhongli Weiye Analysis Burner General Classification
What are the core components of Shenzhen low nitrogen and low nitrogen burners. Burners come in many varieties and can be classified according to the fuel used or the purpose of the burner.
According to the use, it can be divided into atmospheric furnace and vacuum furnace burners, coking furnace burners, cracking furnace burners, reformer burners, etc.
15
2020-07
News
Natural gas low nitrogen surface burner manufacturer Zhongli Weiye electromechanical analysis burner general classification
What are the common classifications of natural gas low nitrogen surface burners? The burner is the core component of various heating equipment (industrial furnaces, boilers, drying equipment, etc.), providing heat for the related processes. Burners come in many varieties and can be classified according to the fuel used or the purpose of the burner.
11
2020-07
News
What are the types and characteristics of 30mg low nitrogen burner liquid fuel?
What are the types and characteristics of liquid fuels for 30mg low nitrogen burners? The commonly used liquid fuels for burners are heavy oil, residual oil and light diesel oil. The characteristics of fuel oil are high carbon and hydrogen content and low water content, so the calorific value is very high, usually 40600~43100kJ/kg.
09
2020-07
News
The function of the four-corner swing type DC burner of the ultra-low nitrogen burner
Under high load, the ultra-low nitrogen burner has relatively stable ignition and combustion due to the high thermal load in the furnace. The main problem is high steam temperature and easy slagging. Therefore, the steam temperature should be kept stable during high-load operation to avoid slagging. When the boiler is running at low load, the heat load of the furnace is low, and it is easy to extinguish the fire. Therefore, attention should be paid to the stability of combustion and its effect on steam temperature first, and then to economic indicators. In order to prevent fire extinguishing, the negative pressure value of the furnace can be appropriately reduced, the auxiliary air baffle between the operating burners can be lowered, the fuel volume and air volume can be adjusted evenly, the fluctuation of wind speed can be avoided, and the nozzles with poor combustion can be monitored. If necessary, use an oil gun to support combustion and stabilize the flame.
05
2020-07
News
Description of operation mode of low nitrogen burner (burner) combustion system
In order to ensure the correct position of the flame center and avoid flame deflection, the load of each burner in operation should be distributed as evenly and symmetrically as possible, that is, the air volume and powder feeding volume of each burner should be adjusted in the same way. However, in practice it is not possible to achieve the same amount of powder for each nozzle. In addition, due to differences in structure, installation, manufacture and arrangement, the characteristics of each burner may not be exactly the same. Burners adapted to high loads may not be adapted to low loads, and the adaptability of each burner to coal and its effect on steam temperature, flame distribution and slagging is also different.
02
2020-07
News
Common technologies and advanced applicable technologies of low-nitrogen burners for energy saving and emission reduction
The key technologies of Zhongli Weiye low-nitrogen burner for energy saving and emission reduction can be divided into the following six aspects: 1. Industrial fields: key breakthroughs in ultra-high-efficiency motors and motor control systems, rare earth permanent magnet ironless motors, special amorphous motors and amorphous Reactors, energy reduction and waste recycling in key processes of large iron and steel complexes.
03
2020-05
News
The difference between condensing boilers and non-condensing boilers
Combination boilers and pure heat boilers can be condensing or non-condensing. Non-condensing boilers usually draw air from inside the room, while condensing boilers will be completely sealed and draw air directly from outside. Condensing boilers are safer than non-condensing boilers. Condensing boilers are safer than non-condensing boilers because the risk of sucking anything into the boiler is much lower. Also, condensing boilers are typically at least 25% more efficient than non-condensing models.
03
2020-05
News
Surface Stabilized Combustion Engineering and Technology
Zhongli Weiye Company took the lead in developing premixed surface stable combustion. Surface-stabilized combustion is accomplished through a porous surface through which premixed fuel and air permeate uniformly, and combustion occurs only along the outermost layers. An inherent feature of all surface stabilized burners is the low nitrogen oxide (NOx) emissions. Low NOx levels can be achieved by creating a homogeneous mixture of fuel and air with a specific fuel/air ratio to produce the desired adiabatic flame temperature. Since the primary NOx formation mechanism is thermal fixation of atmospheric nitrogen and oxygen at elevated temperatures, control and reduction of adiabatic fire
03
2020-05
News
The formation principle and advantages of low nitrogen combustion
This feature of our technology is the inherent characteristic of the premixed surface for stable combustion - uniform temperature at any point along the surface and operating temperatures well below the NOx formation peak temperature range. Zhongli Weiye Low NOx Surface Combustion Burners can ensure minimum NOx formation for all our burner products.
03
2020-05
News
Application and Selection of Compact High Turndown Ratio Premixed Surface Combustor
Zhongli Weiye low nitrogen burner is the most compact premixed gas burner with specific shape characteristics. Specifically designed for compact combustion chambers where space is limited. Features a high modulation range up to 1:40 with a good modulation signal throughout the range and a high output level up to 1 MW/4,000 MBTU/h ( larger sizes available on request).
30
2020-04
News
The future development advantages of condensing gas boilers are obvious
The generalized condensing boiler is to use the high-efficiency condensation waste heat recovery device to absorb the sensible heat in the high-temperature flue gas discharged from the boiler and the latent heat released by the condensation of water vapor, so as to improve the efficiency of the boiler.
30
2020-04
News
What are the common ways to transform coal-fired boilers?
Renovation of coal conveying equipment for coal-fired boilers. When the coal-fired boiler is reformed, it is possible to reform its coal conveying equipment. The original coal conveying setting is bucket type, which will cause lump coal to accumulate on the grate, which will seriously affect the air intake of the boiler, thus affecting the combustion condition. If the bucket-type coal feeding device is changed to feed coal in a layered form, under the action of gravity, some coal blocks will be distributed loosely on the grate from bottom to top, so that the incoming Wind is very beneficial, which increases the sufficiency of combustion, improves the utilization rate of coal, and at the same time can reduce the carbon content of ash a lot, and this effect is very good.
30
2020-04
News
China's highest standard energy conference - National Energy Committee meeting held in Beijing
China's highest standard energy conference-National Energy Committee meeting was held in Beijing, and the research of the meeting was further developed
Implement the new energy security strategy, review and approve the implementation opinions on promoting high-quality energy development, and deploy this winter and next spring to keep warm and ensure the supply of work
do.
30
2020-04
News
Performance and characteristics of low nitrogen condensing burners
In recent years, China's clean energy industry has continued to develop, and the scale of the industry and the level of technical equipment have continuously leapt to new heights, making outstanding contributions to alleviating energy resource constraints and ecological pressure. Shenzhen Zhongli Weiye Electromechanical Equipment Co., Ltd.
30
2020-04
News
What is the future development trend of China's low-nitrogen burner in-depth market research and analysis?
Low-nitrogen combustion technology is a relatively popular industry in recent years. It can be said that it is a hot search term. With the follow-up of environmental protection policies in various places to implement low-nitrogen transformation requirements for gas boilers, it has been the most widely used, economical and practical measure.
29
2020-04
News
Three advantages of condensing boilers
If the boiler is used as a heat source for heating, improper selection will result in high energy consumption of the entire system, slow heating, and inconvenient use of domestic hot water. As a user, it is natural to want more energy-saving, more durable, and easy-to-control boilers for heating. So what are the advantages of condensing boilers?
29
2020-04
News
Gas boilers use condensing module boilers for higher thermal efficiency
Compared with coal-fired boilers and biomass boilers, gas-fired boilers cause relatively less pollution, so gas-fired boilers need to be promoted. However, the current thermal efficiency of gas boilers in my country
The thermal efficiency has not been fully utilized, and there is a problem of low thermal efficiency, which is embodied in the following aspects.
29
2020-04
News
What should I do if the rectification of the condensing boiler is blocked?
Yesterday, Dongguan Environmental Protection Bureau once again sent a supervision team to Zhongtang and Tangxia towns to conduct on-site supervision, and found that the condensing boilers that need to be renovated are still in full swing. the bureau
29
2020-04
News
Why condensing wall-hung boilers are more energy-efficient boilers
We all know that the thermal efficiency of general wall-hung boilers is not greater than 100%. Why can the thermal efficiency of condensing wall-hung boilers reach 107% or even 110%? This is because the gas combustion industry
29
2020-04
News
Do you want to know about the fully premixed condensing boiler, please see below
Why did the fully premixed condensing boiler become the mainstream product in the gas boiler industry? With this question, let's start our content explanation:
Please learn about fully premixed condensing boilers from the following 5 points:
1. Fully premixed condensing boilers are the mainstream products in the gas boiler industry.
2. Let’s talk about the scientific principles and characteristics of low nitrogen and condensation in gas boilers.
3. A brief discussion of several main structural boilers currently on the market.
4. What is the efficiency of the fully premixed condensing boiler? What is the energy saving effect of the heating system?
5. Technical points for selection of fully premixed condensing boilers.
29
2020-04
News
What is condensing technology, what is the working principle and core point of condensing boilers
Condensing boiler is to use high-efficiency flue gas condensation waste heat recovery device to absorb the sensible heat in the exhaust flue gas at the tail of the boiler and the latent heat released by the condensation of water vapor, so as to achieve the purpose of improving the thermal efficiency of the boiler. Condensing technology The key to condensing boilers is condensing technology, which is a new type of energy-saving and environmentally friendly technology; her principle is not complicated, and a simple summary is to recover the heat energy in the flue gas by condensing the flue gas. In traditional boilers, the exhaust gas temperature is generally 160~250℃, or even higher, so that the water (such as natural gas: CH4+2O2→CO2+2H2O) generated when the fuel is burned is in a superheated state in the flue gas. Air escapes from the chimney. The thermal efficiency of traditional boilers can generally only reach 85% to 91%.
29
2020-04
News
How to choose a condensing boiler manufacturer
With the increasing application of condensing boilers, its advantages in technology, energy saving and environmental protection have become increasingly prominent. In order to increase corporate benefits, save energy and effectively reduce emissions, many companies do not know how to choose condensing boiler manufacturers. . In order to better ensure the quality of the boiler, the user needs to comprehensively evaluate the following aspects when choosing a manufacturer:
29
2020-04
News
What is condensing technology, what is the working principle and core point of condensing boilers
Condensing boiler is to use high-efficiency flue gas condensation waste heat recovery device to absorb the sensible heat in the exhaust flue gas at the tail of the boiler and the latent heat released by the condensation of water vapor, so as to achieve the purpose of improving the thermal efficiency of the boiler. Condensing technology The key to condensing boilers is condensing technology, which is a new type of energy-saving and environmentally friendly technology; her principle is not complicated, and a simple summary is to recover the heat energy in the flue gas by condensing the flue gas. In traditional boilers, the exhaust gas temperature is generally 160~250℃, or even higher, so that the water (such as natural gas: CH4+2O2→CO2+2H2O) generated when the fuel is burned is in a superheated state in the flue gas. Air escapes from the chimney. The thermal efficiency of traditional boilers can generally only reach 85% to 91%.
29
2020-04
News
Technical principle and mature development of condensing boiler
Among all kinds of comprehensive energy technologies, energy efficiency technology is one of the important ways to promote energy conservation and emission reduction in the energy policies and guidelines of various countries.
29
2020-04
News
Is it true that the thermal efficiency of condensing boilers exceeds 100%?
Whether it is central heating or separate heating, boilers are basically indispensable. In their own homes, wall-hung boilers are used, and large boilers are used for central heating. With the promotion of energy saving and emission reduction, many places have replaced coal-fired boilers with gas-fired boilers. When people buy boilers, in addition to price, service life, etc., they are most concerned about the thermal efficiency of the boiler. For the problem that the thermal efficiency of condensing boilers exceeds 100%, some people already understand, some people always doubt it, and some people directly put it. It is used as a gimmick for business promotion, so is it true that the thermal efficiency of the condensing boiler exceeds 100%?
29
2020-04
News
In June, the sky in Xiangyang city is very blue, and the number of excellent days is 24 days
Last month, the number of days with good air quality in the urban area of Xiangyang was 24 days, an increase of 2 days over the same period last year, and the proportion of days with good air quality was 80.0%, an increase of 6.7 percentage points over the same period last year. The reporter learned from the July dispatch meeting on intensive air pollution rectification held yesterday afternoon that after a month of intensive rectification, the city's air quality has improved significantly.
29
2020-04
News
Tender Notice for Boiler Low Nitrogen Retrofit Project of Qilu Hospital of Shandong University
Shandong Puhua Project Management Co., Ltd. is entrusted by Qilu Hospital of Shandong University, and in accordance with the relevant regulations of the "Government Procurement Law of the People's Republic of China", is now conducting public bidding for the boiler low-nitrogen renovation project of Qilu Hospital of Shandong University. Qualified suppliers are welcome to bid .
29
2020-04
News
Chengdu strictly controls new coal-fired boilers
In order to fully grasp the status of air pollutant emissions and energy efficiency testing of coal-fired boilers, and effectively control the emission of air pollutants from boilers, our city will accelerate the improvement and improvement of the city's air quality, further implement total coal-fired control, and strictly control new coal-fired boilers. , and promote the standard management of boilers outside the high-polluting fuel non-combustion zone.
29
2020-04
News
Beijing old community gas boilers trade in old ones for new heating "replace the dynasty"
Every winter, people are most concerned about heating problems. Families with poor heating are always suffering, but Ms. Zhang, who is located in a unit building in Dahongmen, has no such troubles this year. Things have to start in 2007.
29
2020-04
News
Do you know what the new policy for low nitrogen transformation of gas boilers in Wuhan, Hubei Province is?
Recently, Wuhan City issued the 2019 Embrace the Blue Sky Action Plan, which aims to accelerate the optimization and upgrading of the industrial structure, promote the optimization and adjustment of the energy structure, and implement the adjustment of the transportation structure.
29
2020-04
News
Key points and working principles of condensing boilers
Condensing gas boilers, as the name suggests, are condensing gas boilers. Now condensing gas boilers can be divided into condensing domestic gas boilers and condensing commercial gas boilers. The products also distinguish two series of condensing floor-mounted boilers and condensing wall-mounted boilers. The most important part of condensing gas boilers is the realization of condensing technology.
29
2020-04
News
With the improvement of national environmental protection awareness, the use of condensing boilers will definitely become the trend of the heating industry
The generalized condensing boiler is to use the high-efficiency condensation waste heat recovery device to absorb the sensible heat in the high-temperature flue gas discharged from the boiler and the latent heat released by the condensation of water vapor, so as to achieve the purpose of improving the thermal efficiency of the boiler. Today, condensing boilers in the true sense are high-efficiency boilers that fully premix combustion, reuse condensation waste heat to recover sensible heat and latent heat, and achieve energy-saving purposes. The condensing furnace that is only condensed and recovered belongs to the "pseudo-condensing furnace".
29
2020-04
News
Want to know how to turn an ordinary gas boiler into a low nitrogen boiler?
Boiler emissions are an important cause of air pollution. In order to reduce boiler pollution, a lot of work has been done on coal reduction and coal consumption all over the country, which greatly reduces the solid smoke emissions from boilers and the emissions of sulfur dioxide and other polluting gases. However, simply replacing coal-fired boilers with gas-fired boilers did not reduce the nitrogen oxide emissions of the boilers. Therefore, changing the boilers in use into low-nitrogen boilers has also become a new task for the current boiler renovation.
29
2020-04
News
Want to know how to turn an ordinary gas boiler into a low nitrogen boiler? The answer is below
Boiler emissions are an important cause of air pollution. In order to reduce boiler pollution, a lot of work has been done on coal reduction and coal consumption all over the country, which greatly reduces the solid smoke emissions from boilers and the emissions of sulfur dioxide and other polluting gases. However, simply replacing coal-fired boilers with gas-fired boilers did not reduce the nitrogen oxide emissions of the boilers. Therefore, changing the boilers in use into low-nitrogen boilers has also become a new task for the current boiler renovation.
29
2020-04
News
Want to know how to turn an ordinary gas boiler into a low nitrogen boiler? The answer is below
Boiler emissions are an important cause of air pollution. In order to reduce boiler pollution, a lot of work has been done on coal reduction and coal consumption all over the country, which greatly reduces the solid smoke emissions from boilers and the emissions of sulfur dioxide and other polluting gases. However, simply replacing coal-fired boilers with gas-fired boilers did not reduce the nitrogen oxide emissions of the boilers. Therefore, changing the boilers in use into low-nitrogen boilers has also become a new task for the current boiler renovation.
29
2020-04
News
What is the working principle of low nitrogen burner, want to know the answer?
Currently, there are various technologies used to control high temperature NOx, including:. Burner design. Exhaust or flue gas recirculation. Chemical additives (eg ammonia). Catalyst assist. Burner manufacturers use designs such as low NOx emission deflectors, air staging, and flue gas recirculation. The purpose of flue gas recirculation can be achieved by introducing the products of combustion (POC) in the furnace into the flame or mixing the POC of the exhaust system with air or fuel to reduce the furnace temperature. Flue gas recirculation can be achieved to induce combustion of products from the furnace flame (POC) or exhaust systems using POC, mixed with air or fuel, lowering the flame temperature. Can
29
2020-04
News
What are the requirements of the low nitrogen burner for nitrogen reduction on the boiler? Let me explain to you below.
Low-nitrogen transformation is to reduce the emission of nitrogen oxides. Since the implementation of the environmental protection policy, all parts of the country have actively promoted the transformation of low-nitrogen burners in boilers. Today, Shandong burner manufacturers will talk about the requirements of low-nitrogen burner nitrogen reduction principles for boilers.
29
2020-04
News
How do low nitrogen burners work?
The nitrogen oxides produced in the combustion process are mainly NO and NO2, which are generally referred to as nitrogen oxides NOx. A large number of experimental results show that the nitrogen oxides emitted by the combustion device are mainly NO, accounting for about 95% on average, while NO2 only accounts for about 5%.
29
2020-04
News
What is the principle of low nitrogen burner?
Low NOx burners are those with low NOx emissions during fuel combustion. The NOx emission of traditional natural gas boiler burners is usually around 120~150mg/m3. The NOx emission of low nitrogen burners is usually around 30~80mg/m3. NOx emissions below 30mg/m3 are usually called ultra-low nitrogen burners. At present, low-nitrogen burners can be roughly divided into the following categories according to the principle:
15
2020-04
News
What is a burner? I recently arrived at a new company and I need a burner. Which imported brand burners are better?
Q: What is a burner? I recently arrived at a new company and I need a burner. Which imported brand burners are better?
Answer: Weishaupt, Oke, Olin, Riyadh, Black & Decker, Liwei, General
15
2020-04
News
How the burner ignites more safely
A: In the past, when the heating furnace was in operation or during its operation, there had been a furnace explosion accident. In the light, the parts of the furnace were damaged, and in the severe case, the whole furnace was blown up.
The main reason for the explosion of the furnace is that when the burner is ignited, the burner just ignites and then goes out, or the burner is not ignited and oil or gas has entered the furnace, and the burner does not carry out steam purging, and then ignites, so that Causes the gas inside the furnace to explode.
15
2020-04
News
How to choose a boiler burner correctly?
Q: How to choose the boiler burner correctly
Answer: Consult the boiler manufacturer, the manufacturer has the most thorough understanding of the matching performance of the burner. The type and power range of the burner are roughly matched to the tonnage of the boiler
15
2020-04
News
Common faults and troubleshooting of burner
(1) The air volume is too large (1) Turn down the damper (2) The air humidity is too high (2) Appropriately reduce the air volume and increase the inlet air temperature (3) The exhaust temperature is low 6 (3) Take measures to increase the smoke exhaust temperature , Chimney dripping (1) The ambient temperature is low
15
2020-04
News
Specific steps for safe operation of natural gas burners
Natural gas burners often require more analysis, especially the steps for safe operation of natural gas burners are very important. Here, the editor will tell you about the specific steps of the safe operation of natural gas burners in detail.
15
2020-04
News
How to choose a heavy oil burner?
The heavy oil burner is green and environmentally friendly: the pulse dust collection system of the burner can reach more than 99%, effectively ensuring the clean operation of the workshop. The pulse dust collection system is one of the patents invented by Hongxing Machinery to meet the requirements of environmental protection. One of the biggest warning signs of BaoZha is the sudden change of pressure. For this reason, we adopt automatic pressure relief type explosion-proof door to detain the pressure in time, so that BaoZha can be withdrawn in the germination stage.
15
2020-04
News
What does the big calorie on the burner mean? Let me explain to you below?
Q: What does the big card on the burner mean?
Answer: Hello, the heat of the pellet burner is mainly calculated according to the fuel heat consumed by the burner, the heat of the burner = the heat of the fuel consumed - the heat loss, I hope to help you. Or you can come and have a look here.
14
2020-04
News
What is the temperature field distribution of a large boiler furnace? Where is the temperature usually the highest?
What is the temperature field distribution of the furnace of a large boiler (above 300MW, the front wall of the burner), where is the temperature usually the highest? Burner nozzle area or screen over the lower part? or somewhere else? Please explain in detail, thank you!
14
2020-04
News
The noise of the burner is very loud now, is there a muffler to reduce the noise?
Q: The noise of the burner is very loud now. Is there a muffler to reduce the noise?
Hello, do you have any pictures or large samples that you made by yourself?
Answer: Yes. A muffler cover can be added outside the burner. Some burner brands can provide it. It's easy to make yourself too!
No. It's very simple. If you do it yourself, use a steel plate to weld a five-sided frame, and the space can be as large as possible. It is enough to clamp the refractory sound-absorbing material with steel mesh inside.
14
2020-04
News
Application of Boiler Denitrification, Desulfurization and Dust Removal System
Environmental protection is an important basic national policy in my country. With the acceleration of technological progress in various industries and the continuous improvement of my country's environmental protection laws and regulations, people are paying more and more attention to environmental protection. The growth of my country's GDP and the continuous development of the heavy chemical industry have led to increasing environmental pressures in our country. If environmental governance cannot be effectively implemented, our country will follow the industrial and chemical industry road of pollution first and then governance like western developed countries.
14
2020-04
News
Held the 2019 publicity and implementation meeting for low-nitrogen transformation of gas-fired boilers
On the morning of April 4, 2019, the Iron Fist Haze Control Office of Beilin District, Xi'an organized the enterprises that use gas-fired boilers within their jurisdiction to hold the 2019 publicity and implementation meeting for the low-nitrogen transformation of gas-fired boilers.
14
2020-04
News
What is the problem of safe ignition of the burner?
Recently, there have been too many gas explosions and various gas accidents that threaten personal safety. It is very important for safety! According to the combustion characteristics of gas in the furnace, its safety control requirements mainly include pre-blowing, automatic ignition, combustion state monitoring, protection of biomass pellet burner not igniting, flameout protection, gas pressure high and low limit protection, air pressure Insufficient protection, power failure protection, measures to prevent gas leakage accidents, etc. Let's discuss the safe ignition of the burner together:
14
2020-04
News
Performance characteristics of oil and gas dual-purpose burner
The oil and gas dual-purpose burner is an energy-saving burner developed by users who meet the shortage of fuel gas supply, which needs to be supplemented by some oil materials, and the mixed combustion of fuel oil and gas or intermittent combustion. The burner is composed of a central oil gun and a multi-head inner mixed pipe, which can be used for single fuel oil, gas, and oil and gas mixed combustion.
14
2020-04
News
Working principle and scope of use of waste oil burner
Description of equipment characteristics of waste oil burner Product introduction: such as waste oil, waste gear oil and waste oil, diesel oil, kerosene, motor oil, rapeseed oil and cottonseed oil. Eliminate the pollution of waste oil to the environment.
14
2020-04
News
What is the maximum heating temperature of the burner?
In general, the technology adopts secondary air distribution, and the furnace pressure is 500-700mm water column to ensure the normal fluidization of the jet area. Continuous feeding and continuous production, stable flame, the highest temperature section of biomass burner can reach 1300 ℃, which is widely used in industry.
14
2020-04
News
Brief introduction to the operation mode of single stage burner
Let's take a look at how a single stage burner works. When the burner is applied, the working mode is start-stop. Once the adjustment setting of the burner is completed, the output power of the burner is fixed (it may vary slightly due to changes in external conditions), and the burner has only one working point , the start and stop of the burner is controlled by the TC temperature control or pressure switch on the control circuit. After the burner is started, if the temperature or pressure of the heated object is lower than the TC setting value, the TC is automatically closed and the burner starts. When the temperature or pressure of the heated object is higher than the TC setting value, the TC is automatically disconnected and the burner stops. When the temperature or pressure of the heated object drops below the TC setting, the TC is closed again and the burner automatically restarts. The single-stage fire burner is suitable for boilers, heating furnaces, incinerators, paint booths, kitchen frying furnaces, water heaters, die-casting machinery, drying equipment, industrial furnaces, etc., with good results. Power is stable.
14
2020-04
News
Natural Gas Burner Natural Gas Burner Principle Natural Gas Burner Features
Principle When the combustible gas (city gas, natural gas, liquefied petroleum gas) is controlled by the microcomputer control system into the combustion head of the burner according to the program, the primary air is mixed with the combustible gas, ignited and burned, and the secondary air is assisted to burn to achieve full combustion. The combustion status is detected and controlled by the flame automatic tracking system. When the combustion fails (oxygen deficiency in the combustion chamber, underpressure of combustible gas, cut-off of combustible gas, insufficient gas volume, etc.), the control system issues an instruction, and the solenoid valve of the gas supply system is quickly closed. , cut off the gas power supply, the burner will automatically shut down after purging, indicating a fault.
14
2020-04
News
Natural Gas Burner Natural Gas Burner Instructions Natural Gas Burner Working Principle
Pressure conversion 1 bar (bar) = 105 Pa (Pa) 1 dyne/cm2 (dyn/cm2) = 0.1 Pa (Pa) 1 Torr (Torr) = 133.322 Pa (Pa) 1 mm Hg (mmHg) = 133.322 Pa (Pa) 1 mm water column (mmH2O) = 9.80665 Pa (Pa) Engineering atmospheric pressure = 98.0665 kilopascals (kPa) 1 kilopascal (kPa) = 0.145 pounds force/inch2 (psi) = 0.0102 kilogram force/cm2 (kgf /cm2) = 0.0098 atmosphere (atm) 1 pound force/inch2 (psi) = 6.895 kilopascal (kPa) = 0.0703 kilogram force/cm2 (kg/cm2) = 0.0689 bar (bar) = 0.068 atmosphere (atm) 1 Physical atmospheric pressure (atm) = 101.325 kilopascals (kPa) = 14.696 pounds / inch 2 (psi) = 1.0333 bar (bar) 1m3 (gaseous) liquefied gas = 2.3kg (liquid) liquefied gas commonly used specific gravity natural gas 0.81kg/m3 liquefied gas 2.08kg/m3 city gas 0.58kg/m3 air 1.24kg/m3 common volume: 1 gallon (gal) = 3.785 liters (1) heat transfer coefficient conversion: 1 kcal/m2.h (kcal/m2.h) = 1.16279 watts/m2 (w/m2) 1 kcal/(m.hour.℃)[1kcal/(mh℃)]=1.16279 watts/(m.kelvin)[w/(m2.K)]1 British thermal Unit/(ft2.h.℉)[Btu/(ft2.h.℉)]=5.67826 watts/(m.Kelvin)[(w/m2.K)]1m2.h.℃/kcal ( m2.h.℃/kcal)=0.86000 m2.Kelvin/Watt (m2.K/W) 1 kcal (m.hour.℃)[kcal/(mh℃)]=1.16279W/(meter.Kelvin) [W/(mK)]1 British thermal unit/(ft.h.℉) [But/(ft.h.℉) =1.7303 watts/(meter.Kelvin) [W/(mK)] specific capacity heat conversion: 1 kcal/(kg.°C) [kcal/(kg.°C)] = 1 British thermal unit/(lb.°F) [Btu/(lb.°F)] = 4186.8 Joules/(kg. Kelvin) [J/ (kg.K)] heat power conversion 1 kcal = 4186.75 joules (J) = 4.2KJ=0.004MJ1 million kcal=42MJ 1 kilogram force meter (kgf.m)=9.80665 joules (J) 1 British thermal unit (Btu)=1055.06 joules (J) 1 kilowatt hour (kW.h)=3.6×106 joules (J) 1 foot-pound force (ft.lbf) = 1.35582 joules (J) 1 metric horsepower hour (hp.h) = 2.64779 × 106 joules (J) 1 British horsepower hour (UKHp.h) = 2.68452 × 106 joules 1 Joule=0.10204kg.m=2.778×10-7kW.hour=3.777×10-7 metric horsepower hour=3.723×10-7 imperial horsepower hour=2.389×10-4 kcal=9.48×10-4 British thermal unit Power conversion 1 British thermal unit/hour (Btu/h) = 0.293071 watts (W) 1 kilogram force. Meters/second (kgfm/s) = 9.80665 watts (w) 1 cal/s (cal/s) = 4.1868 watts ( W) 1 metric horsepower (hp) = 735.499 watts (W)
14
2020-04
News
What are the technical ways of transforming low nitrogen burners?
1. Staged combustion: Staged combustion technology is to send fuel and air into the furnace in stages. Fuel classification is to enter most of the fuel in the candle combustion area. The low-nitrogen transformation price can form a low-nitrogen reduction area at the end of the primary flame area. It has been formed The nitrogen oxides are partially reduced to nitrogen gas through this zone. Staged combustion technology can ensure full combustion of fuel and reduce the formation of nitrogen oxides in flue gas, which can reduce nitrogen oxide emissions by about 60%.
14
2020-04
News
burner power
If you are new to the burner, please ask a low-level question about the power of the burner: For the definition of the power of the burner, for example, a burner is marked like this: the output (power) of the gas/fuel dual-fuel burner is 3 million kcal/hour. What is the power? It is calculated according to the fuel with the calorific value of burning. Is it necessary to convert it according to the fuel used when selecting the model? Also... expand
14
2020-04
News
What are the 6 major components of a burner?
Q: What are the six major components of the burner
Answer: Burner parts and related components can be divided into six functional systems according to their functions: main structure, control system, ignition system, fuel supply system, combustion system, and power system.
28
2020-03
News
New low NOx burner
According to different NOX control principles, low NOX burners can be divided into four types, namely stage type, mixing promotion type, split flame type and self-flue gas recirculation type. In addition to the several types of burners introduced above, there are several new types of burners as follows:
28
2020-03
News
How to maintain and maintain to prolong the service life of the burner?
With the rapid development of the industrialized economy, the scope of use of burners is becoming more and more extensive. Then, the maintenance and maintenance of the burner has become the focus of attention. Nanyang Zhongtong Thermal Energy Equipment Co., Ltd. specializes in the production of burners for decades. Through continuous exploration and accumulation of experience, the maintenance and maintenance of burners have summarized the following aspects to share with you:
28
2020-03
News
What are the six major components of the burner?
Q: What are the six major components of the burner
Answer: Burner parts and related components can be divided into six functional systems according to their functions: main structure, control system, ignition system, fuel supply system, combustion system, and power system.
05
2020-02
News
Problems and causes analysis of low-nitrogen burner technology after application and transformation
The low-nitrogen combustion technology adopts low-temperature and low-oxygen combustion, the temperature of the main combustion area drops more, controls and delays the ignition of pulverized coal, and reduces the ignition area
05
2020-02
News
What do we need to know about the safe use of boiler burners
In modern industrial manufacturing, boilers are generally equipped with boiler burners, and boiler burners play an important role in the boiler system and are the main equipment of the combustion system. So as equipment, how to use, debug and operate precautions is very important for every worker. In order to ensure safe debugging operations, the operating standards for the burner of the boiler burner are as follows
26
2019-12
News
Future burner trends
Low-NOx burners and low-NOx burners refer to burners with low NOx emissions during the fuel combustion process. The use of low-NOx burners can reduce the NOx emissions during the combustion process.
The nitrogen oxides produced in the combustion process are mainly NO and NO2, which are generally referred to as nitrogen oxides NOx. A large number of experimental results show that the nitrogen oxides emitted by the combustion device are mainly NO, accounting for about 95% on average, while NO2 only accounts for about 5%.
26
2019-12
News
Reasonable selection considerations for low nitrogen burners
Low-NOx burners and low-NOx burners refer to burners with low NOx emissions during the fuel combustion process. The use of low-NOx burners can reduce the NOx emissions during the combustion process.
The nitrogen oxides produced in the combustion process are mainly NO and NO2, which are generally referred to as nitrogen oxides NOx. A large number of experimental results show that the nitrogen oxides emitted by the combustion device are mainly NO, accounting for about 95% on average, while NO2 only accounts for about 5%.
26
2019-12
News
The use of low nitrogen burners in energy saving and environmental protection
The residence time of the flue gas in the high temperature area is one of the main factors affecting the amount of NOx generation. Improving the mixing of combustion and air can reduce the thickness of the flame surface. Under the condition of constant combustion load, the flue gas is at high temperature on the flame surface. The residence time in the zone is shortened, thereby reducing the amount of NOx generated. Mixing-promoting burners are designed according to this principle.
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