Process for preparing a large pore hydroprocessing catalyst

Details Process for preparing a large pore hydroprocessing catalyst Process for preparing a large pore hydroprocessing catalyst

1997-03-10

2000-02-29

Wood, Elizabeth D.

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

Regenerating or rehabilitating catalyst or sorbent

Gas or vapor treating

502 20, 502 34, 502 38, 502313, 502315, B01J 2034, B01J 2316

Patent

active

060309156

ABSTRACT:
The present invention relates to a process for preparing a hydroprocessing catalyst comprising the steps of subjecting a spent hydroprocessing catalyst comprising carbonaceous and sulphurous deposits to a thermal treatment to remove at least part of said deposits, grinding the thus obtained spent catalyst, mixing the ground hydroprocessing catalyst with at least one additive, and shaping the mixture of additive and ground hydroprocessing catalyst to form particles of a new hydroprocessing catalyst, with the spent hydroprocessing catalyst being subjected to a high-temperature calcination step carried out at a temperature in the range of 550-1000.degree. C. for a period sufficient to increase the MPD of the spent catalyst by at least 0.5 nm.
The process according to the invention is particularly suitable for preparing ebullated bed catalysts from spent hydroprocessing catalysts.

REFERENCES:
patent: 4888316 (1989-12-01), Gardner et al.
European Search Report, dated Jul. 17, 1996.

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