Rerefining used oil with borohydride reducing agents

Details Rerefining used oil with borohydride reducing agents Rerefining used oil with borohydride reducing agents

1984-02-08

1985-03-12

Gantz, Delbert E.

Mineral oils: processes and products

Refining

Purifying used oil

208184, 208348, 208251R, C10G 710, C10G 700, C10M 1100

Patent

active

045043833

ABSTRACT:
Used oil is rerefined utilizing borohydride reducing agents. The borohydride reducing agent contacts the used oil in an aqueous solution, for example. Contact with the borohydride reducing agent may occur before, during or after distillation or evaporation of the used oil. The disclosed method reduces the concentration of carbonyl compounds and metals and reduces the corrosion characteristics of used oil.

REFERENCES:
patent: 3008897 (1961-11-01), Burk, Jr. et al.
patent: 3425933 (1969-02-01), Lester
patent: 3639229 (1972-02-01), Brownamell et al.
patent: 3879282 (1975-04-01), Johnson
patent: 3919076 (1975-11-01), Cutter et al.
patent: 4021333 (1977-05-01), Habiby et al.
patent: 4252637 (1981-02-01), Knorre et al.
patent: 4366049 (1982-12-01), Knorre et al.
patent: 4439311 (1984-03-01), O'Blasny

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