Waste oil recovery process

Details Waste oil recovery process Waste oil recovery process

1979-11-29

1981-03-17

Castel, Benoit

Liquid purification or separation

Processes

Chemical treatment

210765, 210774, 208183, 210804, C10M 1100

Patent

active

042565782

ABSTRACT:
Oil, used as a lubricant and coolant in an industrial process, may become contaminated by foreign materials, for example, water and solid particulate. Because of its cost, continued use of the oil is desirous but impossible if the foreign materials are not removed when the concentration of such becomes excessive. By heating the contaminated oil and adding a chemical agent such as an alkaline solution of sodium metasilicate, the oil may be selectively separated from its contaminants allowing its further use.

REFERENCES:
patent: 2284106 (1942-05-01), Stagner
patent: 2902439 (1959-09-01), Milz et al.
patent: 3304255 (1967-02-01), Katsuta et al.
patent: 3793184 (1974-02-01), Loftus

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