METHOD OF REFINING LUBRICATING OIL FRACTIONS Russian patent published in 1997 - IPC

Abstract RU 2081149 C1

FIELD: petroleum processing. SUBSTANCE: lubricating oil fractions are refined with selective solvent in presence of surfactant of general formula 1 wherein R is alkyl or C₁₆-C₁₈-alkenyl, n + m = 3-11, which is introduced into raw material or into solvent or into their mix in quantity of 0.0002-0.005 wt %. As solvent, N-methylpyrrolidone, furfurol or phenol are used. EFFECT: improved refining condition. 2 cl, 1 tbl

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RU 2 081 149 C1

Authors

Rjabov V.G.

Shuverov V.M.

Pepeljaev S.N.

Kuz'Min V.I.

Junusov Sh.M.

Starkova N.N.

Dates

1997-06-10—Published

1995-07-19—Filed