Process for producing low viscosity lubricating base oil having

Details Process for producing low viscosity lubricating base oil having Process for producing low viscosity lubricating base oil having

1993-09-30

1995-10-31

Myers, Helane

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Plural serial stages of chemical conversion

208 27, 208 96, 208 97, C10G 6702

Patent

active

054626501

ABSTRACT:
A process for the production of a high viscosity index, low viscosity lubricating base oil having a kinematic viscosity of 3.0 to 5.0 mm.sup.2 /s at 100.degree. C., a viscosity index of 120 or more and a pour point of -10.degree. C. or less, while simultaneously producing a high quality fuel oil, which includes using at least one of a heavy gas oil fraction and a light vacuum gas oil fraction as a stock oil that contains about 60% by volmme or more of distillate components within a distillation temperature range of from about 370 to about 480.degree. C. and about 50% by mass or more of saturated hydrocarbons, subjecting the stock oil to hydrocracking in the presence of an amorphous silica alumina catalyst, separating the cracked product into a fuel oil fraction and a lubricating oil fraction by atmospheric distillation, and subsequently subjecting the lubricating oil fraction to dewaxing, optionally applying at least one of solvent refining and hydrofinishing.

REFERENCES:
patent: 3790472 (1974-02-01), White
patent: 3794580 (1974-02-01), Ladeur
patent: 3962071 (1976-06-01), Itoh et al.
patent: 4347121 (1982-08-01), Mayer et al.
patent: 4361477 (1982-11-01), Miller
patent: 4747932 (1988-05-01), Miller
patent: 4853104 (1989-08-01), Degnan, Jr. et al.
patent: 5288395 (1994-02-01), Marler et al.
Chemical Technology of Petroleum, Gruge et al, 1960 p. 570.

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