公开(公告)号：US3766055A

公开(公告)日：1973-10-16

申请号：US3766055D

申请日：1971-07-19

Applicant: TEXACO INC

Inventor： BRASHER J ,  ASKEW J ,  CUMMINS B ,  ASHTON W

IPC: C10G21/00 ,  C10G67/04 ,  C10G37/04

CPC classification number: C10G21/00 ,  C10G2400/10

Abstract: LUBRICATING OILS OF HIGH VISCOSITY INDES ARE PREPARED BY HYDROCRACKING AN APHALT-CONTAINING VACUUM RESIDUUM, RECOVERING A LUBE OIL FRACTION FROM THE PRODUCT AND SOLVENT REFINING THE RECOVERED LUBE OIL FRACTION.

公开(公告)号：US3719585A

公开(公告)日：1973-03-06

申请号：US3719585D

申请日：1970-12-28

Applicant: TEXACO INC

Inventor： BRASHER J ,  BOZEMAN P ,  ODELL N

IPC: C10G73/06 ,  C10G43/08

CPC classification number: C10G73/06

Abstract: In a dewaxing process wherein a wax-bearing mineral oil is diluted with a solvent mixture comprising an oil-solvent and a wax-antisolvent, the resultant oil-solvent mixture is cooled effecting separation of wax and the solvent mixture is separated from wax free oil by re-extraction. Re-extraction is effected by contacting the oil and solvent mixture with solvents for the waxantisolvent and for the oil-solvent. The dewaxed oil is subjected to a final brightening.