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Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Jeronimo Angulo Aramburu0
Date of Patent
October 7, 2008
0Patent Application Number
105730120
Date Filed
September 23, 2004
0Patent Primary Examiner
Patent abstract
The present invention refers to a method for the regeneration of used petroleum oils which comprises the following steps:(a) demetallization of the used mineral oil by means of chemical treatment of said oil with an aqueous solution of a chemical reagent containing anions which form low solubility salts with the metals of the oil, followed by the separation of the demetallized oil;(b) distillation of the demetallized oil obtained in step (a) at atmospheric pressure and in the presence of alkaline hydroxides; and(c) distillation of the bottom liquid obtained in the atmospheric distillation in step (b) under vacuum and in the presence of alkaline hydroxides to obtain lubricant bases.
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