How are nitrogen oxides formed in the flue gases generated by the recycled gas used in coke ovens?
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Is it formed by the reaction of **hydrogen HCN in coke oven gas with oxygen, or is it produced by the reaction of oxygen with nitrogen?** Thank you all!
The generation of NOX mainly comes from: 1. Fuel-type； 2. High-temperature type ； 3. Rapid response type, etc.; for details, please refer to Advanced Combustion Science!
After desulfurization, the concentrations of sulfur and ammonia in the ammonium sulfate section should be very low. In my opinion, among the exhaust gases emitted from coke oven chimneys, the sources of nitrogen oxides are in the order of high-temperature type > fuel-type > rapid reaction type. Here, we mainly control the temperature in the space above the coke oven, and this approach has a significant effect on reducing the concentration of nitrogen oxides
For this question, just search on Baidu and the information will appear
How to control the temperature in the furnace top space?
Controlling the temperature in the furnace top space is very difficult; it depends primarily on the design, and to a lesser extent on the operating procedures, with the latter mainly focusing on controlling the amount of coal loaded! !