Demetallation in FCC regenerator

Details Demetallation in FCC regenerator Demetallation in FCC regenerator

1992-10-26

1994-02-15

Konopka, Paul E.

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

Regenerating or rehabilitating catalyst or sorbent

Gas or vapor treating

208 52CT, 208164, 208113, 422144, 502 21, 502 42, 502516, B01J 3830, B01J 2938, B01J 3872, C10G 1118

Patent

active

052866912

ABSTRACT:
A process for demetallizing metals contaminated FCC catalyst in an FCC regenerator. A metals getter additive, with higher settling velocity, is added to the regenerator, to remove metals from FCC catalyst by solid-solid interaction. The FCC catalyst forms a light, discrete, dense phase fluidized bed on top of a fluidized bed of additive. FCC catalyst is recycled to the cracking reactor from the top fluidized bed, while additive can be withdrawn from the lower fluidized bed for disposal or for metals recovery and recycle. Additive can be optimized for metals removal and will not dilute the cracking catalyst in the FCC reactor.

REFERENCES:
patent: 2533026 (1950-12-01), Matheson
patent: 4895636 (1990-01-01), Chen et al.
patent: 4944865 (1990-07-01), Occelli
patent: 5021145 (1991-06-01), Chapple
patent: 5057205 (1991-10-01), Chin et al.
patent: 5110775 (1992-05-01), Owen

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