In the process of low-nitrogen transformation in recent years, boilers in many areas have undergone low-nitrogen transformation. What are the differences between ordinary boilers and low-nitrogen burner boilers? Why do government departments vigorously promote low-nitrogen transformation? At present, different regions have different boiler emission standards. Today, the editor will explain the differences between low-nitrogen burner boilers and ordinary boilers from three aspects, so that everyone can clearly understand the advantages of low-nitrogen transformation.
1. Emission difference
First of all, as the name suggests, low-nitrogen transformation refers to the reduction of NOx emitted by boilers. The current national standard is 120mg/m3, but some local governments have higher requirements for emission standards. For example, Beijing’s emission standard is 50mg/m3, and Shanghai’s emission standard is 30mg/m3, so at present, as long as the boiler reaches the nitrogen emission standard of 30mg/m3, it will definitely meet all domestic requirements. It is important to know that low nitrogen emissions have an impact on the environment. A large amount of NOx emissions will cause acid rain and other pollution. Therefore, effectively reducing nitrogen oxide emissions is a very important environmental protection task.
2. Boiler technology
Layer-fired, chamber-fired, and circulating fluidized bed boilers can adopt different low-nitrogen combustion technologies according to different combustion methods. For the air distribution of layer-fired boilers, air classification and flue gas recirculation are often used to achieve low-nitrogen combustion; Under the influence of recirculation on the typical section combustion of layer-fired boilers, combined with air classification technology, semi-coke catalytic reduction of NOx is carried out; in-furnace super reduction and denitrification technology is a new technology for in-furnace denitrification in recent years, through a reasonable position in the combustion flame area Ammonia spraying realizes direct denitrification in high temperature flame. The low-nitrogen boiler mainly optimizes and adjusts the position and distribution of the secondary air outlet and coal inlet, or increases the flue gas recirculation system.
3. Security
After the center has conducted a large number of tests on the low-nitrogen combustion technology in the furnace of layer-fired, chamber-fired, and circulating fluidized bed boilers, it has been verified in engineering applications. Generally speaking, the safety of low-nitrogen boilers is higher. Therefore, its sales volume has been increasing in recent years. Many users buy it because of its high safety and low threat to the space environment. This is also one of the important differences between it and ordinary boilers.
The above is the difference between ordinary boilers and low-nitrogen burner boilers. For many manufacturers, repeated transformation will only increase time and economic costs. At present, some enterprises think that it is enough to meet the standard, but the editor still recommends that you reach 30mg in one step. /m3 emission standard. This is because many areas currently have government policy support for renovations. Second, it can avoid further renovations in the future and affect the normal operation of enterprises. Third, reducing nitrogen oxide emissions early is more conducive to protecting the environment. After all, golden mountains and silver mountains are not as good as green water. Castle Peak!
In the process of low-nitrogen transformation in recent years, boilers in many areas have undergone low-nitrogen transformation. What are the differences between ordinary boilers and low-nitrogen burner boilers? Why do government departments vigorously promote low-nitrogen transformation? At present, different regions have different boiler emission standards. Today, the editor will explain the differences between low-nitrogen burner boilers and ordinary boilers from three aspects, so that everyone can clearly understand the advantages of low-nitrogen transformation.
1. Emission difference
First of all, as the name suggests, low-nitrogen transformation refers to the reduction of NOx emitted by boilers. The current national standard is 120mg/m3, but some local governments have higher requirements for emission standards. For example, Beijing’s emission standard is 50mg/m3, and Shanghai’s emission standard is 30mg/m3, so at present, as long as the boiler reaches the nitrogen emission standard of 30mg/m3, it will definitely meet all domestic requirements. It is important to know that low nitrogen emissions have an impact on the environment. A large amount of NOx emissions will cause acid rain and other pollution. Therefore, effectively reducing nitrogen oxide emissions is a very important environmental protection task.
2. Boiler technology
Layer-fired, chamber-fired, and circulating fluidized bed boilers can adopt different low-nitrogen combustion technologies according to different combustion methods. For the air distribution of layer-fired boilers, air classification and flue gas recirculation are often used to achieve low-nitrogen combustion; Under the influence of recirculation on the typical section combustion of layer-fired boilers, combined with air classification technology, semi-coke catalytic reduction of NOx is carried out; in-furnace super reduction and denitrification technology is a new technology for in-furnace denitrification in recent years, through a reasonable position in the combustion flame area Ammonia spraying realizes direct denitrification in high temperature flame. The low-nitrogen boiler mainly optimizes and adjusts the position and distribution of the secondary air outlet and coal inlet, or increases the flue gas recirculation system.
3. Security
After the center has conducted a large number of tests on the low-nitrogen combustion technology in the furnace of layer-fired, chamber-fired, and circulating fluidized bed boilers, it has been verified in engineering applications. Generally speaking, the safety of low-nitrogen boilers is higher. Therefore, its sales volume has been increasing in recent years. Many users buy it because of its high safety and low threat to the space environment. This is also one of the important differences between it and ordinary boilers.
The above is the difference between ordinary boilers and low-nitrogen burner boilers. For many manufacturers, repeated transformation will only increase time and economic costs. At present, some enterprises think that it is enough to meet the standard, but the editor still recommends that you reach 30mg in one step. /m3 emission standard. This is because many areas currently have government policy support for renovations. Second, it can avoid further renovations in the future and affect the normal operation of enterprises. Third, reducing nitrogen oxide emissions early is more conducive to protecting the environment. After all, golden mountains and silver mountains are not as good as green water. Castle Peak!