The issue of nitrogen oxides in catalytic cracking flue gas
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Is the nitrogen oxide content in catalytic cracking flue gas related to the residual carbon in the feedstock? Is there a connection between high and low residual carbon in the raw materials and the formation of nitrogen oxides in the flue gas?
The nitrogen oxide content in flue gas is related to factors such as the nitrogen content of the raw materials, the regeneration method, Pt as a combustion aid, and the CO burner or waste heat boiler (maximum operating temperature).
I would like to ask: what is the relationship between the nitrogen oxide content in flue gas and the maximum operating temperature of the waste heat boiler?
No ready-made correlation formula has been found yet, but the formation rate of NOx increases above 850 degrees~~~
Under normal circumstances, the regeneration temperature is unlikely to be this high, unless in extreme situations!
I think it is the furnace temperature of the carbon monoxide incinerator that needs to be above 850 degrees for rapid formation of hot nitrogen, rather than the temperature of the regenerator
Well, it should be said that most catalytic units do not involve carbon monoxide incinerators, so they are not mentioned! Just explain the problem using conventional reasoning! Thanks for the reminder!
CO combustion: attention is needed at the upper sections, as this is an important source of NOx
Are you referring to the furnace temperature of the CO incinerator?