Fluidized-bed catalyst regeneration

Details Fluidized-bed catalyst regeneration Fluidized-bed catalyst regeneration

1988-12-21

1990-09-25

Konopka, Paul E.

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

Regenerating or rehabilitating catalyst or sorbent

Gas or vapor treating

208164, 422144, 502 41, 502 42, 502 39, B01J 3834, B01J 3836, B01J 2938, C10G 1118

Patent

active

049593340

ABSTRACT:
A process for the regeneration of a catalyst by combustion of the coke deposited thereon during a hydrocarbon conversion reaction in which process more than 50 percent of the coke is burned in at least one regeneration chamber operating with a fluidized bed, wherein the upper portion of the fluidized bed the suspension of catalyst particles in said chamber is slowed down due to a substantial increase in the diameter of the regeneration chamber so that the superficial velocity of the rising fluids which no longer contain any oxygen is reduced to a value ranging from 0.5 to 1.5 meters/second, that is, to a value corresponding to the fluidization conditions in a dense fluidized bed.

REFERENCES:
patent: 2488030 (1949-11-01), Scheineman
patent: 2985584 (1961-05-01), Rabo et al.
patent: 3153635 (1964-10-01), Bond
patent: 3909392 (1975-09-01), Horecky, Jr. et al.
patent: 3963603 (1976-06-01), Bunn, Jr. et al.
patent: 4013546 (1977-03-01), Suggitt et al.
patent: 4214978 (1980-07-01), Kennedy et al.
patent: 4388218 (1983-06-01), Rowe
patent: 4818372 (1989-04-01), Mauleon et al.

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