Method for regeneration of used lubricant oils

Details Method for regeneration of used lubricant oils Method for regeneration of used lubricant oils

1979-11-01

1981-05-05

Hearn, Brian E.

Mineral oils: processes and products

Refining

Purifying used oil

208312, C10M 1100

Patent

active

042657342

ABSTRACT:
The invention concerns improvements in the process of U.S. Pat. No. 3,870,625 for treating polluted lubricating oil. Previous to said treatment, the used lubricating oil is injected, preferably at a plurality of levels, into at least one reservoir containing liquid propane, where it is left for a time necessary for its dissolution and for its primary separation from the insoluble impurities.

REFERENCES:
patent: 3150934 (1964-09-01), Hazard
patent: 3779902 (1973-12-01), Mitchell et al.
patent: 3870625 (1975-03-01), Wielezynski

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