Patent ID: 6569312
Filing Date: 2003-05-27
Classification: C10G

Abstract:
A process for producing lubricating oils from lubricating oil feedstocks comprising the steps of:(a) passing the feedstock to a fuels hydrocracker under hydrocracking conditions to produce a hydrocracked feedstock, wherein at least about 30 wt. % of the feedstock is converted to hydrocarbon products which boil below the initial boiling point of the feedstock; (b) passing at least a portion of the hydrocracked feedstock to a separation zone and separating gases, a converted hydrocracked fraction containing distillates boiling up to the diesel range and an unconverted hydrocracked fraction; (c) passing at least a portion of the unconverted hydrocracked fraction to a vacuum distillation zone and isolating at least two fractions; (d) hydrodewaxing the at least two fractions from the vacuum distillation zone in a catalytic dewaxing zone under catalytic dewaxing conditions to produce at least two dewaxed fractions, wherein the catalytic dewaxing conditions include a shape selective, medium pore molecular sieve catalyst; and (e) hydrofinishing the at least two dewaxed fractions in a hydrofinishing zone under hydrofinishing conditions, said hydrofinishing zone including an aromatics saturation catalyst having metal hydrogenation function, to produce lubricating oils.