Patent ID: 6024880
Filing Date: 2000-02-15
Classification: B01D,C10M

Abstract:
A method suitable for treating used oil to remove contaminants including ash and color contaminants therefrom to provide a purified oil product, the method comprising the steps of:(a) providing a porous inorganic membrane module having a high pressure side and a low pressure side;(b) providing a body of oil to be treated;(c) introducing oil to the high pressure side of said membrane module to provide an oil permeate on the low pressure side and an ash rich concentrate on the high pressure side thereby separating ash in said oil from said oil permeate;(d) contacting said oil permeate with an adsorbent at a temperature of less than 120.degree. C. to remove one of color and odor from said oil permeate to provide a purified oil product; and thereafter(e) periodically regenerating said adsorbent.