Method of removing contaminants from used oil

Details Method of removing contaminants from used oil Method of removing contaminants from used oil

C - Chemistry, Metallurgy

10

M

C10M 175/00 (2006.01) C10G 19/04 (2006.01)

Patent

CA 2363691

A method for removing acidic compounds, color, and polynuclear aromatic hydrocarbons. The base catalyzed flow apparatus allows used oil to pass through the used oil feed pump (24) to heater (16). At the same time, a 50 % aqueous sodium or potassium hydroxide is passed through a caustic feed pump (20) and into the used oil after it passes through and is heated to 90 °C by heater (16).

L'invention concerne un procédé permettant d'éliminer des composés acides, des couleurs et des hydrocarbures aromatiques polycycliques. Grâce à l'appareil à écoulement à catalyse basique l'huile usagée peut passer au dispositif de chauffage (16) via la pompe d'alimentation (24) en huile usagée. Simultanément, on fait passer un hydroxyde aqueux de sodium ou de potassium à 50 % à travers un pompe d'alimentation caustique (20), puis dans l'huile usagée après l'avoir fait passer dans le dispositif de chauffage (16)et l'avoir chauffé à 90 DEG C.

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