Catalytic cracking process using regenerator with multiple catal

Details Catalytic cracking process using regenerator with multiple catal Catalytic cracking process using regenerator with multiple catal

1990-09-04

1992-03-24

McFarlane, Anthony

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Cracking

208153, 208164, 502 41, C10G 1100, C10G 3500, B01J 2034

Patent

active

050985531

ABSTRACT:
An improved process for regeneration of catalyst used in fluidized catalytic cracking of hydrocarbons using a cross-flow or swirl type catalyst regenerator is disclosed. Instead of a single catalyst withdrawal outlet for regenerated catalyst, multiple catalyst withdrawal points are provided. Use of multiple catalyst outlets, or a continuous radial catalyst outlet, greatly reduces stagnant regions in the bed. The process is useful in FCC units having inventories of from 10 to 100 tons of catalyst.

REFERENCES:
patent: 3448037 (1969-06-01), Bunn, Jr.
patent: 3817280 (1974-06-01), Celani
patent: 3904548 (1975-09-01), Fagan et al.
patent: 3926778 (1975-12-01), Owen et al.
patent: 4072600 (1978-02-01), Schwartz
patent: 4093535 (1978-06-01), Schwartz

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