30 mg low nitrogen burners are classified as:

the

1. Stage burner: Shaanxi gas-fired low-nitrogen boiler designed according to the principle of staged combustion, so that fuel and air are mixed and burned in stages.

2. Self-recirculation burner: Use the pressure head of combustion air to suck back part of the combustion smoke, enter the burner, and mix with air for combustion.

3. Rich-lean burner: part of the fuel is burned too richly, and the other part is burned too lightly, but the overall air volume remains unchanged.

4. Split flame type burner: A flame is divided into several small flames, so the small flame shortens the residence time of oxygen, nitrogen and other gases in the flame, and has obvious inhibitory effect on "thermal reaction NO" and "fuel NO".

5. Mixing-promoting burner: The mixing of combustion and air is improved, and the residence time of flue gas in the flame surface, that is, the high-temperature area, is shortened, thereby reducing the amount of NOx produced.

6. Low NOx pre-combustion chamber burner: Fuel and primary air are mixed quickly. Due to the lack of oxygen, only part of the fuel is burned. The fuel precipitates volatiles in the primary flame zone where oxygen is poor and the flame temperature is low, thus reducing the formation of NOx.