Catalytic dewaxing process
First Claim
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1. A process for the catalytic dewaxing of a hydrocarbon oil feed obtained by the vacuum distillation of the residue of an atmospheric distillation of a crude petroleum feedstock, wherein said hydrocarbon oil feed has a boiling range between 300°
- C. and 620°
C. includes waxy molecules and more than 1000 ppmw of sulphur or sulphur containing compounds and said hydrocarbon oil feed has not been subjected to a hydrotreating step to reduce sulfur and nitrogen content, by contacting said hydrocarbon oil feed under catalytic dewaxing conditions with a catalyst composition comprising a Group VIII metal hydrogenation component selected from the group consisting of platinum palladium and nickel, dealuminated aluminosilicate zeolite crystallites and a low acidity refractory oxide binder material which is essentially free of alumina.
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Abstract
Process for the catalytic dewaxing of a hydrocarbon oil feed including waxy molecules and more than 500 ppmw of sulphur or sulphur containing compounds by contacting the oil feed under catalytic dewaxing conditions with a catalyst composition comprising at least a hydrogenation component, dealuminated aluminosilicate zeolite crystallites and a low acidity refractory oxide binder material which is essentially free of alumina.
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Citations
39 Claims
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1. A process for the catalytic dewaxing of a hydrocarbon oil feed obtained by the vacuum distillation of the residue of an atmospheric distillation of a crude petroleum feedstock, wherein said hydrocarbon oil feed has a boiling range between 300°
- C. and 620°
C. includes waxy molecules and more than 1000 ppmw of sulphur or sulphur containing compounds and said hydrocarbon oil feed has not been subjected to a hydrotreating step to reduce sulfur and nitrogen content, by contacting said hydrocarbon oil feed under catalytic dewaxing conditions with a catalyst composition comprising a Group VIII metal hydrogenation component selected from the group consisting of platinum palladium and nickel, dealuminated aluminosilicate zeolite crystallites and a low acidity refractory oxide binder material which is essentially free of alumina. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 21)
- C. and 620°
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12. A process for the catalytic dewaxing of a hydrocarbon oil feed obtained by the vacuum distillation of the residue of an atmospheric distillation of a crude petroleum feedstock, wherein said hydrocarbon oil feed has a boiling range between 300°
- C. and 620°
C. includes waxy molecules and more than 1000 ppmw of sulphur or sulphur containing compounds compounds and said hydrocarbon oil feed has not been subjected to a hydrotreating step to reduce sulfur and nitrogen content, by contacting said hydrocarbon oil feed under catalytic dewaxing conditions with a catalyst composition comprising a nickel hydrogenation component, dealuminated aluminosilicate zeolite crystallites and a low acidity refractory oxide binder material which is essentially free of alumina. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
- C. and 620°
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22. A catalytic dewaxing process, comprising:
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vacuum distilling a residue from an atmospheric distillation of a crude petroleum feedstock that contains a sulfur compound and a nitrogen compound to yield a vacuum distillate having a boiling range between 300°
C. and 620°
C.;subjecting said vacuum distillate to a solvent extraction with a solvent to thereby yield a solvent extracted waxy raffinate having a reduced aromatics content from that of said vacuum distillate, wherein said solvent extracted waxy raffinate contains waxy molecules and more than 1000 ppmw of sulfur or sulfur containing compounds; and without being subjected to a hydrotreating step to reduce the sulfur and nitrogen content of said solvent extracted waxy raffinate, contacting said solvent extracted waxy raffinate, under catalytic dewaxing conditions, with a catalyst composition comprising dealuminated aluminosilicate zeolite crystallites, a low acidity refractory oxide binder material which is essentially free of alumina, and a Group VIII metal hydrogenation component selected from the group consisting of platinum, palladium and nickel. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30)
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31. A catalytic dewaxing process, comprising:
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vacuum distilling a residue from an atmospheric distillation of a crude petroleum feedstock that contains a sulfur compound and a nitrogen compound to yield a vacuum distillate having a boiling range between 300°
C. and 620°
C. and containing more than 1000 ppmw of sulfur or sulfur containing compounds; andwithout being subjected to a hydrotreating step to reduce the sulfur or nitrogen content of said vacuum distillate, contacting said vacuum distillate, under catalytic dewaxing conditions, with a catalyst composition comprising dealuminated aluminosilicate zeolite crystallites, a low acidity refractory oxide binder material which is essentially free of alumina, and a Group VIII metal hydrogenation component selected from the group consisting of platinum, palladium and nickel. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38, 39)
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Specification