Fluid catalytic cracking process

Details Fluid catalytic cracking process Fluid catalytic cracking process

1994-06-13

1996-09-03

Pal, Asok

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Cracking

208161, 208164, C10G 1100, C10G 3514

Patent

active

055520340

ABSTRACT:
Disclosed is a fluid catalytic cracking process 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 vessel, and the stripping and reaction steps take place entirely in the dilute phase.

REFERENCES:
patent: 3993556 (1976-11-01), Reynolds et al.
patent: 4402913 (1983-09-01), McKinney
patent: 4464250 (1984-08-01), Myers et al.
patent: 4574044 (1986-03-01), Krug

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