C - Chemistry – Metallurgy – 10 – G
Patent
C - Chemistry, Metallurgy
10
G
196/200
C10G 19/02 (2006.01) C10G 27/06 (2006.01) C10M 175/00 (2006.01)
Patent
CA 1324334
NEUTRALIZING OXIDATION PRODUCT COMPONENTS IN CONTINUOUS REREFINING OF USED OIL STOCKS Abstract of the Disclosure Rerefined used oil supplies are treated on a continuous basis so as to clarify the flow and so as to neutralize oxidation product components such as carboxylic acids which remain within the oil stocks after they have been rerefined by upstream procedures. The process is carried out on a continuous basis, and the treatment includes utilizing very low quantities of strong base for each volume of rerefined used oil that is thus treated. The treatment process includes continuously vacuum distilling a continuous flow of used oil stock and strong base composition.
592303
Osler Hoskin & Harcourt Llp
Safety-Kleen Corp.
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