Process for manufacturing lubricating oil

Abstract

Abstract A process for manufacturing a lubricating oil comprising a first step of passing a deasphalted crude oil distillation residue containing by weight at least 85 percent of constituents boiling above 500*C and at least 75 percent of consituents boiling above 525*C, with hydrogen over a hydrogenating catalyst with a cracking carrier at 330*-450*C, at a hydrogen partial pressure of 80-240 kg/cm2, at such a flow rate that the hydrocarbons in the resulting product boiling below 525*C amount to 70-95 percent of the initial weight of such hydrocarbons, separating the products boiling below 525*C, and recovering a first lubricating oil fraction of high V.I. and a second step of passing at least a portion of the products boiling above 525*C over a similar catalyst, at the same temperature and pressure ranges of the first step, at such a flow rate that the major part of the first zone heavy products are converted to products boiling below 525*C and separating therefrom, by distillation, a second lubricating oil fraction.

Inventors

• 👤 A Billon
• 👤 M Derrien

Bibliographic Details