Process for dewaxing heavy and light fractions of lube base oil with zeolite and sapo containing catalysts

摘要

An integrated process is provided for preparing a dewaxed heavy lube base oil product and a dewaxed light lube base oil product from a waxy feedstock. The process includes separating the waxy feedstock into two or more fractions. A light fraction is upgraded to increase its VI, and dewaxed in an isomerization process using a wax isomerization catalyst such as SAPO-11, SAPO-31 or SAPO-41. A heavy fraction is upgraded to increase its VI, and dewaxed in the presence of a wax cracking catalyst such as ZSM-5.