Fluid catalytic cracking system

Details Fluid catalytic cracking system Fluid catalytic cracking system

1993-05-19

1994-11-01

Warden, Robert J.

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Fluidized bed

422143, 422145, 422147, B01J 818, F27B 1500, F27B 1508

Patent

active

053605985

ABSTRACT:
Disclosed is a fluid catalytic cracking system in which the catalytic cracking reaction takes place in a dilute phase, and the reaction product contains a reduced volume of off gas having a low concentration of SO.sub.x and NO.sub.x. The use of off gas, which is produced during a regeneration step, to strip entrained vapor from spent catalytic cracking catalyst acts to reduce SO.sub.x and NO.sub.x byproducts, and eliminates the need to separately recover and treat the off gas stream from the regenerator portion of the system. The entire process, including the reaction step, the stripping step and the regeneration step, can be performed in a single non-partitioned vessel.

REFERENCES:
patent: 2820072 (1958-01-01), Wood et al.
patent: 3412013 (1968-11-01), Bowles
patent: 3785782 (1974-01-01), Cartmell et al.
patent: 4786400 (1988-11-01), Farnsworth

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