Process for dewaxing heavy and light fractions of lube base oil

Details Process for dewaxing heavy and light fractions of lube base oil Process for dewaxing heavy and light fractions of lube base oil

1995-09-29

1998-11-10

Myers, Helane

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Plural parallel stages of chemical conversion

208 78, 208 27, 208111, 208120, 208114, C10G 5106

Patent

active

058338373

ABSTRACT:
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.

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Smith et al., "New Process Dewaxes Lube Base Stocks", Oil & Gas J., May 26, 1980, p. 75.

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