Process for removing contaminants from waste lubricating oil...

Details Process for removing contaminants from waste lubricating oil... Process for removing contaminants from waste lubricating oil...

C - Chemistry, Metallurgy

10

G

196/202

C10G 17/00 (2006.01)

Patent

CA 1163590

"PROCESS FOR REMOVING CONTAMINANTS FROM WASTE LUBRICATING OIL BY CHEMICAL TREATMENT" ABSTRACT OF THE DISCLOSURE A process is provided for removing contaminants from waste lubricating oil. The waste oil is contacted with one or more of the pre- treatment chemicals ammonium sulphate, ammonium bisulphate, ammonium dihydrogen phosphate, diammonium phosphate, calcium hydrogen phosphate, phosphoric acid, calcium sulphate, aluminum sulphate, and magnesium sulphate. The contacting step is performed at a temperature in the range of about 650 to 725°F. The oil mixture is then filtered to remove the contaminants. The pretreatment chemical is preferably added in the absence of water, thereby reducing the amount of water to be removed from the oil.

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