SPENT MOTOR OIL REGENERATION METHOD Russian patent published in 2003 - IPC

Abstract RU 2211240 C2

FIELD: lubricants. SUBSTANCE: spent motor oil is first freed from suspended impurities and then subjected to distillation removal of water and light hydrocarbon fractions followed by extraction of lube fractions with precipitating solvent. According to invention, before extraction, gas oil fraction is removed and part of tarasphaltene compounds obtained in extraction stage is recycled into extraction apparatus to create internal reflux. EFFECT: simplified process due to reduced number of stages and improved quality of oils. 1 tbl, 3 ex

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RU 2 211 240 C2

Authors

Zherebtsov V.L.

Merkulov O.A.

Peganova M.M.

Dates

2003-08-27—Published

2001-04-09—Filed