Heavy oil hydroprocessing with group VI metal slurry catalyst

Details Heavy oil hydroprocessing with group VI metal slurry catalyst Heavy oil hydroprocessing with group VI metal slurry catalyst

Filed on

1989-09-05

Date issued

1990-11-13

Examiner

McFarlane, Anthony

Patent Class

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

SubClass

Catalyst or precursor therefor

SubSubClass

Sulfur or compound containing same

Other Related Categories

502219, 208108, 208143, 208215, B01J 27051

Type

Patent

Status

active

Patent number

049701908

Description

ABSTRACT:
A process for the preparation of a dispersed Group VIB metal sulfide hydrocarbon oil hydroprocessing catalyst comprising reacting aqueous ammonia and a Group VIB metal compound, such as molybdenum oxide or tungsten oxide, to form water soluble compounds such as aqueous ammonium molybdates or tungstates. The aqueous ammonium molybdates or tungstates are sulfided at a relatively low temperature with hydrogen sulfide without feed oil. The slurry stream is then passed through a separator and ammonia is flashed and separated from the system, leaving a separator residue slurry. The separator residue slurry is then mixed with feed oil, hydrogen and hydrogen sulfide and sulfided at a relatively high temperature to produce a dispersed molybdenum sulfide or tungsten sulfide catalyst of high hydroprocessing activity. The catalyst slurry and feed oil can then be passed to a hydroprocessing reactor.

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patent: 4431747 (1984-02-01), Seiver et al.
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patent: 4557821 (1985-12-01), Lopez et al.
patent: 4557822 (1985-12-01), Bearden, Jr. et al.
patent: 4579838 (1986-04-01), Bearden et al.
patent: 4710486 (1987-12-01), Lopez et al.
patent: 4857496 (1989-08-01), Lopez et al.
patent: 4863887 (1989-09-01), Ohtake et al.

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