Catalytic aromatic saturation in the presence of halide
AssigneeUnion Oil Company of California
InventorsDennis D. Delaney, John W. Ward
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Abstract
An aromatic saturation process is catalyzed under relatively low pressure conditions in the presence of a halide-containing compound. Additive fluoride-containing compounds can be injected into the feedstock just prior to contact of the feedstock with either a fluoride or nonfluoride-containing catalyst. Also, a catalyst utilized in the invention contains Group VIB and/or Group VIII hydrogenation metals, phosphorus and fluoride supported on an amorphous, porous refractory oxide and has a narrow pore size distribution.
Claims44
A process for saturating aromatic compounds contained in a hydrocarbon-containing feedstock comprising at least 10 volume percent of compounds and at least about 90 volume percent of feedstock components boiling at less than about 371.degree. C., said process comprising contacting in a reactor said feedstock under aromatic saturation conditions including an elevated temperature and a pressure at the inlet of said reactor less than 700 p.s.i.g. and the presence of hydrogen with a particulate catalyst comprising at least one hydrogenation component and at least one fluoride component supported on a porous refractory oxide, to produce a product containing more saturated forms of said aromatic compounds contained in said feedstock.
A process for saturating aromatic compounds contained in a hydrocarbon-containing feedstock comprising at least 10 volume percent of aromatic compounds and at least about 90 volume percent of feedstock components boiling at less than about 371.degree. C., said process comprising contacting said feedstock in a reactor under aromatic saturation conditions, including an elevated temperature and a pressure of the inlet of said reactor in the range from greater than 300 to less than 800 p.s.i.g. and the presence of hydrogen and in the presence of at least one additive fluoride-containing compound, with a particulate catalyst comprising at least one Group VIII metal hydrogenation component and/or at least one Group VIB metal hydrogenation component supported on a porous refractory oxide, said conditions yielding at least about 10 percent conversion of said aromatic compounds in said feedstock to product components containing more saturated forms of said aromatic compounds.
A process for saturating aromatic compounds contained in a hydrocarbon-containing feedstock comprising at least about 90 volume percent of feedstock components boiling at less than about 371.degree. C., said process comprising contacting said feedstock in a reactor in the presence of at least one fluoride-containing compound, or precursor thereof, under conditions of elevated temperature and a pressure at the inlet of said reactor less than 700 p.s.i.g. and the presence of hydrogen, with a particulate catalyst comprising at least one active nickel hydrogenation metal component, at least one active tungsten hydrogenation metal component and at least one phosphorus component on an amorphous porous refractory oxide, said catalyst having a pore size distribution wherein at least 75 percent of the pore volume is in pores of diameter in the range from about 50 angstroms to about 130 angstroms and less than 10 percent of said pore volume in pores of diameter greater than 130 angstroms, said conditions yielding at least about 10 volume percent conversation of said aromatic compounds in said feedstock to product components containing more saturating forms of said aromatic compounds.
A catalytic process for saturating aromatic compounds contained in a feed stock comprising a diesel fraction boiling substantially in the range from about 140.degree. C. to about 370.degree. C. and containing at least 10 volume percent of aromatic compounds, said process comprising contacting said feedstock with a catalyst comprising at least one molybdenum or tungsten metal component, a nickel metal component, a phosphorus component, and a fluoride component, on an amorphous porous refractory oxide-containing gamma alumina, said catalyst having a pore size distribution wherein at least 75 percent of the total pore volume is in pores of diameter in the range from 50 angstroms to 130 angstroms, the median pore diameter is from about 60 to about 100 angstroms, and at least 50 percent of the total pore volume is in pores of diameter in the range from about 20 angstroms above to about 20 angstroms below said median pore diameter, under aromatic saturation conditions to produce a product containing more saturated forms of said aromatic compounds contained in said feedstock.
Dependencies are inferred from the claim text.