De-ashing lubricating oils

Details De-ashing lubricating oils De-ashing lubricating oils

C - Chemistry, Metallurgy

10

G

196/221, 196/56

C10G 19/02 (2006.01) C10M 175/00 (2006.01)

Patent

CA 1143312

Abstract of the Disclosure In a process for reducing the concentration of ash-forming components in a lubricating oil wherein a feedstream comprising said lub- ricating oil and an aqueous ammonium salt treating agent is continuously passed into a first reaction zone wherein said treating agent reacts with ash-forming components in said oil and an effluent is continuously withdrawn from said first reaction zone and subjected to filtration after removal of water therefrom, the improvement comprising introducing said feedstream into said first reaction zone by passing said feedstream through a centrifugal pump along with portions of the contents of said first reaction zone.

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