Manufacture of lubricating oils

Details Manufacture of lubricating oils Manufacture of lubricating oils

1991-09-17

1993-12-28

Myers, Helane

Mineral oils: processes and products

Chemical conversion of hydrocarbons

With preliminary treatment of feed

208 18, 208111, 208143, 208 58, 208 96, 208 97, C10G 6704, C10G 6910

Patent

active

052736458

ABSTRACT:
A method for reducing the pour point of a hydrocarbon feedstock that contains aromatic compounds, sulfur-containing compounds and nitrogen-containing compounds is provided. The method involves solvent extraction and utilizes a catalytic hydrodewaxing zone with a first section having a shape-selective molecular sieve-containing catalyst composition which is substantially free of Group VIII metals and a second section having a Group VIII metal-containing hydrogenation catalyst composition with a porous support material substantially free of acidic crystalline molecular sieve material.

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