Method of rerefining oil by dilution, clarification and extracti

Details Method of rerefining oil by dilution, clarification and extracti Method of rerefining oil by dilution, clarification and extracti

1977-01-10

1979-05-15

Hart, Charles N.

Mineral oils: processes and products

Refining

Purifying used oil

208181, 210 22R, 210 51, 210 61, B01D 1100, C10M 1100, C10G 2102

Patent

active

041546709

ABSTRACT:
Used oil is rerefined by diluting it with a non-polar diluent, removing insoluble impurities from the resulting solution, extracting said solution with an immiscible liquid extractant to remove further impurities, and finally removing extractant and diluent from the oil.

REFERENCES:
patent: 1281354 (1918-10-01), Handy
patent: 2605272 (1952-08-01), Hunn et al.
patent: 2726986 (1955-12-01), Gross
patent: 3819508 (1974-06-01), Fainman et al.
patent: 3835035 (1974-09-01), Fainman
patent: 3919076 (1975-11-01), Cutler et al.
patent: 3985642 (1976-10-01), Friel et al.
patent: 4001109 (1977-01-01), Li et al.
patent: 4021333 (1977-05-01), Habiby et al.
patent: 4028226 (1977-06-01), Forsberg
Chem. Abstracts 73:37181 (1970).
Chem. Abstracts 70:69972 (1969).

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