Refining of used oils using membrane- and adsorption-based proce

Details Refining of used oils using membrane- and adsorption-based proce Refining of used oils using membrane- and adsorption-based proce

1996-02-26

2000-02-15

Fortuna, Ana

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

210651, 210660, 210670, 210679, 210690, 208179, B01D 6100

Patent

active

060248807

ABSTRACT:
Disclosed is a method suitable for treating used oil to remove contaminants including ash and color contaminants therefrom to provide a purified oil product. The method comprises the steps of providing a porous inorganic membrane module having a high pressure side and a low pressure side, and a body of oil to be treated. The oil is introduced to the high pressure side of the 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 the oil from the oil permeate. Thereafter the oil permeate is contacted with an adsorbent to remove one of color and odor from the oil permeate to provide a purified oil product. The spent adsorbent can be regenerated and reused.

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