Types of low nitrogen burner division

The burner is an important equipment used for industrial oil boilers, gas boilers and asphalt mixing plants and other heat-using equipment, which ensures the stable ignition and combustion of fuel and the complete combustion of fuel and other processes, therefore, to suppress the amount of NOx generation must start from the type of burner. The development of burners so far, low-NOx technology continues to develop, the following is a brief introduction to the type of low-NOx burner division.

1、Self-recirculation burner

Self-recirculation burner can be divided into two types, one is to use the pressure head of combustion air, part of the combustion flue gas sucked back into the burner, mixed with air combustion. Due to flue gas recirculation, the heat capacity of combustion flue gas is large, the combustion temperature is reduced and NOx is reduced. The other by putting part of the flue gas directly into the recirculation in the burner and join the combustion process, such burners have the dual effect of suppressing nitrogen oxides and saving energy.

2、Stage burner

The stage burner designed according to the principle of graded combustion, so that the fuel and air mixed in sections, because the combustion deviates from the theoretical equivalent ratio, so it can reduce the generation of NOx.

3、Split flame type burner

The principle of this burner is to divide the flame into several small flames, relying on the characteristics of a large heat dissipation area of small flames and lower flame temperature, so that the "thermal reaction NO" is reduced. At the same time, the small flame shortens the residence time of oxygen, nitrogen and other gases in the flame, which has obvious inhibiting effect on "thermal reaction NO" and "fuel NO".

These are the types of low-NOx burners. With the strong introduction of the "14th Five-Year Plan" environmental protection measures, low-NOx burners have a broad development prospect in the domestic thermal market in the future. Oubao actively carries out the research and development of environmental protection technology of low nitrogen burner, and has formed a low nitrogen burner product system covering many industries. For more information, please call 0510-85187552 for more information!