Hydroprocessing catalyst regeneration

Details Hydroprocessing catalyst regeneration Hydroprocessing catalyst regeneration

1975-09-22

1977-02-08

Douglas, Winston A.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

208108, 208111, 208216, 208217, B01J 2938, B01J 2120, B01J 3714

Patent

active

040071316

ABSTRACT:
This invention concerns a method of regenerating hydroprocessing catalyst. The invention deals with a method of regenerating hydroprocessing catalyst contained within a reactor, said catalyst having been deactivated by "coke" deposition, comprising: passing into an inlet of said reactor, through said catalyst to be regenerated, and out an outlet of said reactor, a stream of substantially inert gases initially containing about 0.1 to 4.0 volume percent oxygen at an initial temperature of about 600.degree. to 1200.degree. F, a pressure of at least about 100 psig and a space velocity of at least about 50 GHSV; and increasing said oxygen concentration to about 1.0 to 10.0 volume % and/or increasing the temperature to about 800.degree. to 1200.degree. F upon detection of oxygen at said outlet of said catalyst containing reactor.

REFERENCES:
patent: 3533960 (1970-10-01), Weinert
patent: 3764558 (1973-10-01), Tse et al.

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