Treating used automotive lubricating oil to reduce the...

Details Treating used automotive lubricating oil to reduce the... Treating used automotive lubricating oil to reduce the...

C - Chemistry, Metallurgy

10

M

196/202, 196/63

C10M 175/00 (2006.01)

Patent

CA 1177007

ABSTRACT Process for treating used lubricating oil to reduce the content of suspended particulate matter therein, characterized by contacting said used lubricating oil with a carbonyl- group containing compound in the presence of an aqueous electrolyte, separating the resulting mixture into an upper layer containing clarified oil and a lower layer containing agglomerated particulates, and recovering oil of reduced particulate content as product. Suitable carbonyl- group containing compounds include ketones, esters and aldehydes and suitable electrolytes include inorganic and organic acids, alkalis and salts. 5/3/R -1-

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