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US 7,513,989 B1Granted
Hydrocracking process using bulk group VIII/Group VIB catalysts
AssigneeExxonMobil Research and Engineering Company
InventorsStuart Leon Soled, Kenneth Lloyd Riley, Gary P. Schleicher, Richard A. Demmin, Ian Alfred Cody
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Abstract
The invention relates to a hydrocracking process for hydrocracking petroleum and chemical feedstocks using bulk Group VIII/VIB catalysts. Preferred catalysts include those comprised of Ni—Mo—W.
Claims33
A process for preparing lubricating oil basestocks which comprises:
- (a) contacting a hydrocarbon feedstock derived from at least one of thermal treatment, catalytic treatment, extraction, dewaxing or fractionation of a petroleum crude or fraction thereof, shale oil, tar sands or synthetic crude with a sulfided bulk metal catalyst under hydrocracking conditions, said catalyst comprising non-noble Group VIII metal molybdate in which at least a portion but less than all of molybdenum is replaced by tungsten, wherein the bulk metal catalyst prior to sulfidation is represented by the formula:
- (X)b (Mo)c (W)d Oz
- wherein X is non-noble Group VIII metal, the molar ratio of b:
- (c+d) is 0.5/1 to 3/1, the molar ratio of c:d is >0.01/1, and z=[2b+6(c+d)]/2;
- and
- (b) fractionating hydrocracked feedstock to produce a distillate lubricating oil fraction.
3 more elements
A process for producing lubricating oil basestocks which comprises:
- (a) feeding a hydrocarbon feedstock derived from at least one of thermal treatment, catalytic treatment, extraction, dewaxing or fractionation of a petroleum crude or fraction thereof, shale oil, tar sands or synthetic crude, to a first hydrocracking zone containing a hydrocracking catalyst wherein said hydrocracking catalyst is a sulfided bulk metal catalyst comprising non-noble Group VIII metal molybdate in which at least a portion but less than all of molybdenum is replaced by tungsten, wherein the bulk metal catalyst prior to sulfidation is represented by the formula:
- (X)b (Mo)c (W)d Ox
- wherein X is non-noble Group VIII metal, the molar ratio of b:
- (c+d) is 0.5/1 to 3/1, the molar ratio of c:d is >0.01/1, and z=[2b+6(c+d)]/2;
- and
- (b) hydrocracking the feedstock under hydrocracking conditions to produce a hydrocracked feedstock;
- (c) conducting the hydrocracked feed to a second hydrocracking zone containing a second hydrocracking catalyst and hydrocracking the first hydrocracked feed under hydrocracking conditions to produce a second hydrocracked feed;
- and
- (d) fractionating the second hydrocracked feed to produce a distillate lubricating oil fraction.
6 more elements
Dependencies are inferred from the claim text.