What is the gas supply system in a catalytic cracking regenerator?
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Catalyst regeneration requires coking; so, does the gas used for coking enter from above or below, and where are the waste gases discharged? (It is fluidized bed coking.) Thank you all.
Since it is a fluidized bed, the air in the regenerator must enter from beneath the bed layer and be blown upward through the distribution pipes; this allows the catalyst particles to become fluidized and helps maintain a stable density in the bed layer. The burned flue gas is separated at the top of the dilute-phase section by a cyclone separator, which returns the catalyst particles it contains to the dense phase. After passing through three or four cyclones, the gas goes to the smoke engine-main fan unit where it does work, before entering the waste heat boiler to further recover thermal energy; finally, it is discharged into the atmosphere through a chimney.
Thank you very much:handshake
Now, flue gas must undergo desulfurization, denitration, and dust removal before it can be released; environmental regulations are quite strict.