Low-nitrogen burner is an important equipment installed in industrial oil-fired boilers and gas-fired boilers to control pollutant emissions. It adjusts the combustion air and combustion head to stabilize the fuel.
Combustion and complete combustion, improve combustion efficiency and reduce ammonia oxide content, can obtain suitable combustion parameters to meet emission standards.
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 nitrogen oxide emissions during the combustion process. The nitrogen oxides produced in the combustion process are mainly NO and NO2, and these two nitrogen oxides are generally referred to as nitrogen oxides NOx. A large number of experimental 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%.
Low-nitrogen burners are suitable for fuels including natural gas, coal-bed methane, biogas, artificial gas, refinery gas, industrial tail gas and other gases, light oil, heavy oil, coal tar and other oil products, and coal powder and other solid fuels!
Low-nitrogen burners are widely used in various combustion and heating occasions such as power generation boilers, industrial boilers, thermal oil furnaces, industrial kilns, incinerators, heating furnaces, etc.
FGR Flue Gas External Cycle Combustion Technology：
Bntet FGR flue gas is burned in an external cycle, and part of the flue gas is mixed with air and sent to the combustion chamber for combustion. The combustion air after mixing can effectively reduce the temperature and oxygen concentration in the combustion chamber.
The combustion reaction activation energy of gas and oxygen is much less than that of oxygen and nitrogen, so the gas first reacts with oxygen.When there is surplus oxygen, the gas reacts with nitrogen to form NOX. However, the reaction with nitrogen becomes very slow due to the low reaction zone temperature, which effectively inhibits the formation of thermal NOX.
Features of gas low nitrogen burner:
Power range: 200~16000 k w
Single burner is suitable for 0.5t/h~ 20t/h boiler
Applicable fuel: natural gas, liquefied gas, coal gas
Nitrogen oxide emission: NOX≤30mg
Product features: low carbon, low nitrogen, low oxygen
Technical parameters of boiler low-nitrogen burner：
1. The thermal efficiency of the combustion equipment is 90% as a reference, and the actual thermal efficiency of the combustion chamber should be used for calculation when selecting the model.
2. The back pressure of the furnace is the main factor that affects the output of the burner. When selecting the type, you should know the pressure of the combustion chamber used.
3. The low calorific value of the fuel in the standard state: natural gas = 8550 kcal/m3 = 35.80 MJ/m3.