METHOD OF REMOVING CONTAMINANTS FROM USED OIL

摘要

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).