METHOD OF SELECTIVELY PURIFYING LUBRICATING OIL FRACTION FOR REMOVING POLYCYCLIC AROMATICS Russian patent published in 2006 - IPC C10G21/22

Abstract RU 2279466 C1

FIELD: petroleum processing and lubricants.

SUBSTANCE: lubricating oil fraction is preliminarily combined with low-boiling hydrocarbon solvent and stepwise extraction is then conducted at 40-55°C using dimethylsulfoxide as selective solvent.

EFFECT: increased degree of purification without using surfactants complicating and raising in price purification process, reduced consumption of solvent (by 30-40%) and power.

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RU 2 279 466 C1

Authors

Khodov Nikolaj Vladimirovich

Kuimov Andrej Fedorovich

Dolinskij Taras Ivanovich

Dates

2006-07-10—Published

2005-03-14—Filed