Apparatus for recovering heat energy from catalyst regenerator f

Details Apparatus for recovering heat energy from catalyst regenerator f Apparatus for recovering heat energy from catalyst regenerator f

1991-01-31

1992-05-19

Warden, Robert J.

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Fluidized bed

422141, 422144, 422145, 422146, B01J 828

Patent

active

051146827

ABSTRACT:
An improved fluidized catalytic cracking-catalyst regeneration process for catalytically cracking heavy hydrocarbon feedstocks is provided which comprises first and second, relatively lower and higher temperature, catalyst regeneration zones, wherein CO-rich effluent flue gas from the first regeneration zone is combusted in a CO-incinerator/combustor means to substantially convert all CO present therein to CO.sub.2. The effluent gas from the CO-incinerator/combustor is then combined with the effluent flue gas from the second regeneration zone, with the combined streams thereafter being sent to an expansion turbine-compressor means to recover the work energy therefrom and to provide at least all the compressed air requirements of the first and second regeneration zones, and preferably in addition the compressed air requirements of the CO-incinerator/combustion means.

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