CO content in catalytic cracking flue gas
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In the high-low parallel FCC configuration, when the feed rate is increased while the main air volume remains constant, is the CO content in the flue gas higher or lower than before?
Oxygen-poor regeneration or oxygen-rich regeneration operation?
Reply 2# jingpeng: It is oxygen-deficient combustion
With oxygen-starved regeneration and an increased feed rate while the main air volume remains unchanged, the CO content should rise.
The degree of combustion is related to the amount of coke produced
During oxygen-deficient regeneration, with the feed rate increased and the main air flow remaining unchanged, why does the CO content rise?
If the feed amount is large and combustion is incomplete, it can lead to an increase in CO levels! Personal opinion
If the oxygen content in the flue gas pipeline remains constant, then the CO level also stays constant; if the oxygen content decreases slightly, the CO level decreases as well. When determining the processing capacity, you should take the oxygen content into account, otherwise carbon buildup or secondary combustion will occur!
In the case of oxygen-deficient regeneration, the CO content should increase after the yield is increased
The people who spoke earlier are right; there’s no doubt that the CO level will increase. With the main airflow remaining unchanged, the oxygen level also stays constant. An increase in the feed amount means an increase in the amount of coke produced, and in the case of oxygen-deficient regeneration, the CO level will definitely rise.