Process for the production of lube oil

Details Process for the production of lube oil Process for the production of lube oil

1997-03-31

1999-03-02

Griffin, Walter D.

Mineral oils: processes and products

Fractionation

Distillation

208347, 208366, 208350, 208357, 208DIG1, B01D 310

Patent

active

058765913

ABSTRACT:
A process for fractionating a heavy hydrocarbon stream to produce a lube oil fraction having a constant, predetermined flash point. A liquid stream is removed from the fractionator, cooled in response to a fractionator top temperature and returned to the fractionator above the original draw point.

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patent: 4746407 (1988-05-01), Olson
patent: 4894145 (1990-01-01), Jensen

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