Patent ID: 8936715
Filing Date: 2015-01-20
Classification: C10G,C10M,C10N

Abstract:
1. A method of manufacturing high quality lube base oil, comprising: producing unconverted oil of at least one kind in same or different hydrocrackers; supplying the unconverted oil to a vacuum distillation separator to separate, one or more distillate fractions therefrom, the unconverted oil being a mixture comprising supplying all or part of the distillate fractions to a dewaxing reactor in the presence of an isomerization catalyst to obtain a dewaxed oil fraction; and supplying the dewaxed oil fraction to a hydrofinishing reactor in the presence of a hydrofinishing catalyst to obtain a hydrofinished oil fraction, wherein make-up hydrogen is supplied upstream of the hydrofinishing reactor and downstream of the dewaxing reactor in order to increase hydrogen partial pressure in the hydrofinishing reactor and to lower a reaction temperature of hydrofinishing, and wherein the lube base oil is Group III base oil.