Low pressure drop regeneration of a catalyst

Details Low pressure drop regeneration of a catalyst Low pressure drop regeneration of a catalyst

1991-11-25

1993-04-13

Konopka, Paul E.

Catalyst, solid sorbent, or support therefor: product or process

Regenerating or rehabilitating catalyst or sorbent

Gas or vapor treating

208113, 208120, 208161, 208164, 423144, 502 42, B01J 3836, B01J 3834, B01J 2938, C10G 1118

Patent

active

052022943

ABSTRACT:
A process and apparatus for the regeneration of spent FCC catalyst in a single vessel are disclosed. In one embodiment, catalyst is at least partially regenerated in a primary stage comprising a fast or turbulent fluidized bed. The flue gas is discharged up, with some and preferably most of the catalyst discharged laterally, through windows, into a second fluidized bed, preferably disposed as an annulus about the first. In another embodiment a cyclone separator is closely coupled to, but spaced from, the primary regeneration stage, to rapidly separate catalyst from first stage flue gas, and minimize thermal stress.

REFERENCES:
patent: 2584391 (1952-02-01), Leffer
patent: 2862786 (1958-12-01), Trainer
patent: 3926778 (1975-12-01), Owen et al.
patent: 4820404 (1989-04-01), Owen
patent: 5011592 (1991-04-01), Owen et al.

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