Process for degraded-mode regeneration of a catalyst

Details Process for degraded-mode regeneration of a catalyst Process for degraded-mode regeneration of a catalyst

1999-04-22

2000-11-14

Griffin, Steven P.

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

Regenerating or rehabilitating catalyst or sorbent

Gas or vapor treating

502 35, 502 38, 502 50, B01J 2034

Patent

active

061470228

ABSTRACT:
Process for regeneration of a catalytic moving bed in which the catalyst successively passes through at least one combustion zone A, at least one halogenation zone B, and at least one calcination zone C, whereby this process operates in a partial-regeneration-mode, the partially coked catalyst that is obtained from the last combustion zone passes into the halogenation zone in which the amount of halogen and the amount of oxygen are essentially zero--the valves of tubes (19) and (20) are then virtually closed--and the catalyst then passes through the calcination zone in which the amount of oxygen is essentially zero--the valve of tube (11) is then virtually closed.

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