| 摘要 |
A hydrocarbon conversion process, for example hydrocracking, isomerization, alkylation, reforming, hydrogenation, desulphurization or denitrogenation comprises contacting a hydrocarbon feedstock at an elevated temperature with a catalyst composition comprising a copelleted mixture of (A) a crystalline aluminosilicate zeolite, and (B) a silica-alumina cogel containing from 1% to 40% by weight of SiO2 and from 60% to 99% by weight of Al2O3. Examples refer to converting a hydrofined gas oil having an end b.pt. of 750 DEG F. to 400 DEG F. end point gasoline using 8000 SCF./B. hydrogen and 1000 p.s.i.g., 1.5 LHSV.; converting a cycle oil boiling between 400 DEG F. and 850 DEG F. and containing 9000 p.p.m. sulphur, 1 p.p.m. nitrogen using 8000 SCF./B. hydrogen, 1500 p.s.i.g., 9.0 LHSV.; hydrocracking the above gas oil feed mixed with 2200 p.p.m. nitrogen. There is general reference to hydrocracking straight run gas oils, heavy naphthas, coker distillate gas oils, deasphalted crude oils, cycle oils derived from cracking operations. General cracking conditions are: H2 oil ratio, 1000-15,000 SCF./B., pressure 500-5000 p.s.i.g., LHSV. 0.1-20, temperature 400-1000 DEG F.ALSO:A catalyst composition comprises a co-pelleted mixture of:- (A), a crystalline alumino-silicate zeolite and (B), a binder comprising a co-precipitated alumina-silica co-gel containing from 1% to 40% by weight of SiO2 and from 60% to 99% by weight of Al2O3. The zeolite may be zeolite Y, and may contain exchangeable hydrogen, magnesium, calcium, zinc, chromium, rare earths. Other zeolites mentioned are zeolites A, X, L, and mordenite, stilbite, heulandite, ferrierite, dachiardite, chabazite, erionite, faujasite. The catalyst composition may be prepared by mixing the components in water or milling them together in powdered form. The finished composition may contain from 3% to 95% by weight of binder (B). For hydrocracking or isomerization a hydrogenation component, for example platinum, palladium, rhodium, tungsten, molybdenum, chromium or manganese, may be incorporated into the composition, generally in amount from 0.1% to 20% by weight. Examples relate to palladium-magnesium-hydrogen zeolite Y copelleted with alumina-silica.
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