EP 3078730 A1 20161012 - METHOD FOR INCREASING THE YIELD OF LUBRICATING BASES IN THE REGENERATION OF USED OILS
Title (en)
METHOD FOR INCREASING THE YIELD OF LUBRICATING BASES IN THE REGENERATION OF USED OILS
Title (de)
VERFAHREN ZUR ERHÖHUNG DER AUSBEUTE VON SCHMIERÖLBASEN BEI DER REGENERATION VON ALTÖLEN
Title (fr)
PROCÉDÉ POUR AUGMENTER LE RENDEMENT EN BASES LUBRIFIANTES LORS DE LA RÉGÉNÉRATION D'HUILES USAGÉES
Publication
Application
Priority
ES 2013070770 W 20131108
Abstract (en)
The invention defines a process to rerefine used petroleum oils comprising: (a) separating water, light hydrocarbons and asphalts from used petroleum oils and obtaining a lube base oil fraction; (b) distilling the fraction obtained in step (a) in a continuous vacuum fractionation column at moderate temperatures and separating, as lateral extractions, the light, medium and part of the heavy base oils contained in said fraction and, as bottom product, a stream containing the rest of the heavy lube base oils; and (c) evaporating the bottom product obtained in step (b) at moderate temperatures and under vacuum, the absolute pressure of the evaporation being below the absolute pressure of the flash zone in the distillation column of step (b), and obtaining heavy lube base oil vapors, that are condensed and recovered as a liquid heavy lube base oil, and a liquid asphaltic product as a bottom product.
IPC 8 full level
C10M 175/02 (2006.01)
CPC (source: EP)
C10M 175/0033 (2013.01); C10M 175/02 (2013.01)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3078730 A1 20161012; EP 3078730 A4 20170719; MX 2016005893 A 20160817; WO 2015067828 A1 20150514
DOCDB simple family (application)
EP 13896967 A 20131108; ES 2013070770 W 20131108; MX 2016005893 A 20131108