Spent oil recovery process

Details Spent oil recovery process Spent oil recovery process

C - Chemistry, Metallurgy

10

G

196/200

C10G 21/08 (2006.01) B01D 11/04 (2006.01) C10M 175/00 (2006.01)

Patent

CA 1174999

CASE 1410 "SPENT OIL RECOVERY PROCESS" ABSTRACT OF THE DISCLOSURE A process for reclaiming spent oil comprises the steps of removing water and light hydrocarbons, thermally treating the stripped oil, extracting it with a supercritical gas to insolu- bilize impurities and additivies, separating the gas -rich fractions from the oil-depleted gas fractions, expanding the insoluble fractions, separating the additives and impurities, separating the various hydrocarbon fractions according to the respective viscosities, compressing and recycling the gas phases and withdrawing the residue and the oil fractions ac- cording to the respective viscosities.

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