Lubricating oil process

Details Lubricating oil process Lubricating oil process

1979-12-26

1981-10-13

Tufariello, T. M.

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Plural serial stages of chemical conversion

208 89, C10G 4500, C10G 4702, C10G 6512

Patent

active

042946875

ABSTRACT:
Heavy gas oil is converted to a high quality, high viscosity index lubricating oil stock by improved contacting with hydrogen in three catalytic stages. The gas oil is first hydrotreated to provide a stock more amenable to subsequent hydrocracking, thus permitting the use of less severe conditions in the latter step. The hydrocracked oil is finally subjected to a hydrogenation step to fully meet remaining lubricating oil specifications.

REFERENCES:
patent: 3159568 (1964-12-01), Price
patent: 3338819 (1967-08-01), Wood
patent: 3494854 (1970-02-01), Gallagher
patent: 3506568 (1970-04-01), Annesser
patent: 3642610 (1972-02-01), Divijak et al.
patent: 3666657 (1972-05-01), Thompson et al.
patent: 3726790 (1973-04-01), Gallagher et al.
patent: 3912620 (1975-10-01), Gallagher

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