Rerefining used lubricating oil with hydride reducing agents

Details Rerefining used lubricating oil with hydride reducing agents Rerefining used lubricating oil with hydride reducing agents

1982-01-04

1984-03-27

Gantz, Delbert E.

Mineral oils: processes and products

Refining

Purifying used oil

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

Patent

active

044393113

ABSTRACT:
Used lubricating oil is rerefined utilizing hydride reducing agents. The hydride reducing agent contacts the used oil in an aqueous solution, for example. Contact with the hydride reducing agent may occur before, during or after distillation or evaporation of the used lubricating oil. The disclosed method reduces the concentration of carbonyl compounds and metals and reduces the corrosion characteristics of used lubricating 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), Cutler 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.
Product Improvement With Sodium Borohydride by Ventron Corporation.

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