Causes of nitrogen oxide formation
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How are nitrogen oxides generated in the flue gases from catalytic cracking coking?
Nitrogen in the air, nitrogen compounds contained in the raw materials themselves.
It is mainly raw material nitrogen; the regeneration temperature is not sufficient to generate significant thermally generated nitrogen
The regeneration temperature is insufficient, but this can occur in oxygen-deficient regeneration systems.
Why do some people say that oxygen-enriching devices can easily lead to high levels of nitrogen oxides in flue gas emissions?
It’s worth studying carefully; it seems that the oxygen level is lower. I’ll look up some information when I have time