Technical help for reducing NOx in incinerators
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That dear friend has technical information on NOx reduction in incinerators. Thank you very much!
Since the temperature of the incinerator is very high, it is inevitable to produce a lot of NOX. Most of the acid gas incinerators of large-scale sulfur installations in China use combustion gas from foreign Duke or Haiwei companies. You may wish to check their websites.
The key lies in the burner supplier's technical specifications and combustion temperature. Once the burner cannot be replaced, the fuel gas cannot be replaced, which is difficult. Change the burner. Right * * There are NOx emission indicators. We recommend two burner dealers: Hamworthy (UK) and Lanemark. You can contact them. I am a user, not a seller, and I am not advertising:)
Make a fuss about the burner, secondary air supply, low nitrogen and oxygen combustion technology
What is relatively simple is to add subsequent catalyst removal technology. Foreign technologies and processes in this area are relatively mature. Domestic catalysts are difficult to pass.
Nitrogen oxides are mainly caused by the local high temperature of the flame, so reduce the local high temperature. Staged combustion, the air supply is divided into primary air and secondary air, the primary air volume is small, 5~10%. However, the exposure is mainly to the burners of steel plants, and the incinerators are not clear. Generally, this indicator should be raised when designing burners.
1/Use lowNox burner 2/Denitrification in the furnace 3/Subsequent exhaust gas denitrification MSN: realjohn77@hotmail.com
The generation mechanism of NOX is divided into three categories:: 1 Thermal NOX mainly originates from N2 and O2 in the air, and is generated by reaction when the temperature is greater than 1500 degrees. ； 2. Rapid NOX, which is formed from C and H compounds through intermediate products such as HCN, NH, N, etc., and has little to do with temperature. ； 3. Fuel-shaped NOX, which is formed by the reaction of N in the fuel. The main suppression methods are: 1. To lower the flame temperature, you can use the flame * * method, catalytic combustion ； 2. Reduce oxygen concentration, such as two-stage combustion and flue gas recirculation combustion ； 3. Shorten the residence time of flue gas in high temperature area ； 4. Reduce nitrogen concentration and pure oxygen combustion
This can be done by spraying water and steam onto the flame.
What type of incinerator is it?