Hydroprocess utilizing a delta alumina-supported nickel and molybdenum catalyst
AssigneeUnion Oil Company of California
InventorsHoward D. Simpson, Milan Skripek
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Abstract
A catalyst useful for hydroprocessing a hydrocarbon-containing oil contains at least one hydrogenation component on an amorphous, porous refractory oxide containing delta alumina. The catalyst is prepared by impregnating support particles having a narrow pore size distribution and a median pore diameter greater than about 185 angstroms with a solution containing a precursor of the hydrogenation components, followed by drying and calcining. The catalyst is useful for promoting a number of hydrocarbon hydroprocessing reactions, particularly hydrogenative desulfurization, demetallation and denitrogenation, and most particularly, hydrodemetallation of residuum-containing oils.
Claims21
A hydroprocess of a hydrocarbon-containing feedstock catalyzed under conditions including a hydrogen partial pressure from about 100 to about 4,000 p.s.i.g., an elevated temperature, and a LHSV from about 0.05 to 10, by the catalyst composition comprising nickel and molybdenum hydrogenation metal components on a porous, amorphous refractory oxide support containing delta alumina, said composition further comprising a median pore diameter in the range of about 185 to about 230 angstroms.
A process for upgrading a hydrocarbon residuum-containing feedstock containing contaminant metals, said process comprising contacting a catalyst composition consisting essentially of about 0.1 to about 3 weight percent of nickel components, calculated as NiO, and about 2.0 to about 10.0 weight percent of molybdenum components, calculated as MoO.sub.3, at least one porous, amorphous refractory oxide support containing gamma alumina and between 1 and 50 weight percent of delta alumina, calculated as Al.sub.2 O.sub.3, said composition having a median pore diameter between about 190 about 220 angstroms and more than about 85 percent of the total pore volume in pores of diameter greater than 180 angstroms with said feedstock under hydroprocessing conditions including a hydrogen pressure from 200 to 4,000 p.s.i.g., a temperature from 500.degree. to 900.degree. F., and a LHSV from 0.05 to 5.0, to produce a product containing less contaminant metals than contained in said feedstock.
A hydrodesulfurization process comprising contacting a hydrocarbon-containing feedstock containing sulfur, nitrogen and metal contaminants with a catalyst composition comprising nickel and molybdenum hydrogenation metal components and alumina, said catalyst composition further comprising between 1 and 50 weight percent of delta alumina, calculated as Al.sub.2 O.sub.3, and having a median pore diameter greater than 185 angstroms.
A hydrodemetallation process comprising contacting a hydrocarbon-containing feedstock containing metal contaminants with a catalyst composition comprising nickel and molybdenum hydrogenation metal components on a porous, amorphous refractory oxide support containing delta alumina, said composition further comprising a median pore diameter greater than about 185 angstroms and less than about 15 percent of the total pore volume in pores of diameter less than 180 angstroms.
Dependencies are inferred from the claim text.