Process for removing metal contaminants from used lubricating oi

Details Process for removing metal contaminants from used lubricating oi Process for removing metal contaminants from used lubricating oi

1979-02-12

1980-05-27

Crasanakis, George

Mineral oils: processes and products

Refining

Purifying used oil

C10M 1100

Patent

active

042049466

ABSTRACT:
A process is provided for removing metal contaminants from used lubricating oil. The used oil is contacted with an aqueous solution of aluminum sulphate and ammonium sulphate at elevated temperature to form compounds of the metal contaminants in an aqueous phase which is phase separable from the oil. An oil product reduced in metal contaminants is thereby produced which is suitable as a cheap fuel or lubricant.

REFERENCES:
patent: 3222275 (1965-12-01), Krewer et al.
patent: 3879282 (1975-04-01), Johnson
patent: 4097369 (1978-06-01), Ebel et al.

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