| 摘要 |
<p>A process is used to re-refine used lubricating oil for reuse as high quality lubricants comprising: a) mixing oil with a catalyst containing an inorganic compound and acid activated clay of montmorillonite type followed by heating and agitating for a specified temperature and residence time to effect selective cracking of the mixture, b) decreasing the temperature and maintaining agitation for a sufficient time to complete the reaction, c) cooling and filtering the residue to separate clean oil from the mixture. An oil additive comprising inorganic compounds and clays for rendering contaminants inactive is also disclosed.</p> |
