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Catalytic dewaxing process

  • US 7,077,948 B1
  • Filed: 11/16/1999
  • Issued: 07/18/2006
  • Est. Priority Date: 11/18/1998
  • Status: Expired due to Term
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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