Highly active slurry catalyst composition
AssigneeChevron U.S.A. Inc.
InventorsKaidong Chen, Bruce E. Reynolds, Darush Farshid
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Abstract
The instant invention is directed to the preparation of a slurry catalyst composition. The slurry catalyst composition is prepared in a series of steps, involving mixing a Group VIB metal oxide and aqueous ammonia to form an aqueous mixture and sulfiding the mixture to form a slurry. The slurry is then promoted with a Group VIII metal. Subsequent steps involve mixing the slurry with a hydrocarbon oil, and combining the resulting mixture with hydrogen gas (under conditions which maintain the water in a liquid phase) to produce the active slurry catalyst.
Claims32
A process for preparing a catalyst composition suitable for the hydroconversion of heavy oils, comprising:(a) mixing a group VIB metal compound and aqueous ammonia to form a group VIB metal mixture in solution;(b) sulfiding the aqueous mixture of step (a) with a gas comprising hydrogen sulfide to form a slurry;(c) promoting the slurry with a Group VIII metal compound;(d) mixing under turbulent mixing conditions the slurry of step (c) with at least a hydrocarbon oil having a viscosity of at least 2 cSt @ 212° F. to form a homogenous slurry, and under sufficient temperature and pressure to maintain at least a portion of water in the slurry in a liquid phase, thereby forming an active catalyst composition admixed with a liquid hydrocarbon comprising slurry catalyst having an average particle size in the range of 1-20 microns.
A process for preparing a catalyst composition suitable for the hydroconversion of heavy oils, comprising:
- (a) mixing a group VIB metal compound with aqueous ammonia,(b) sulfiding the mixture of (a) with hydrogen and hydrogen sulfide to form a group VIB metal catalyst precursor in an aqueous slurry;(c) promoting the slurry with a Group VIII metal compound;(c) mixing under turbulent mixing conditions the slurry of step (c) with hydrogen gas and at least a hydrocarbon oil having a viscosity of at least 2 cSt @ 212° F. to form a homogenous slurry, and under sufficient temperature and pressure to maintain at least a portion of water in the slurry in a liquid phase, thereby forming an active catalyst composition admixed with a liquid hydrocarbon comprising slurry catalyst having an average particle size in the range of 1-20 microns.
A process for preparing a catalyst composition suitable for the hydroconversion of heavy oils, comprising:(a) mixing a group VIII metal compound with aqueous ammonia,(b) adding hydrogen, hydrogen sulfide and a Group VIII metal compound to the mixture of step (a), forming a catalyst precursor in slurry;(c) mixing under turbulent mixing conditions the slurry of step (b) with hydrogen gas and at least a hydrocarbon oil having a viscosity of at least 2 cSt @ 212° F. to form a homogenous slurry, and under sufficient temperature and pressure to maintain at least a portion of water in the slurry in a liquid phase, thereby forming an active catalyst composition admixed with a liquid hydrocarbon comprising slurry catalyst having an average particle size in the range of 1-20 microns.
Dependencies are inferred from the claim text.