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2 032 705

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Application

4888544/04, 1990-12-10

(22)

Actual filing date

1990-12-10

(45)

Published

1995-04-10

(72)

Inventor

Kalambet I.A.Vishnevskij A.V.Berkovich S.R.Mel'Man A.Z.Derekh P.A.Blokhinov V.F.Proshin N.N.Tjurin A.M.

(73)

Holder

Groznenskij Neftjanoj Nauchno-Issledovatel'Skij InstitutNovo-Jaroslavskij Neftepererabatyvajushchij Zavod

METHOD FOR REGENERATING SOLVENTS Russian patent published in 1995 - IPC

Abstract RU 2032705 C1

FIELD: purification of asphalt by polar and nonpolar solvents. SUBSTANCE: during distillation of nonpolar solvent extract solution is used for reflux. EFFECT: improves efficiency of the method. 1 dwg, 2 tbl

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RU 2 032 705 C1

Authors

Kalambet I.A.

Vishnevskij A.V.

Berkovich S.R.

Mel'Man A.Z.

Derekh P.A.

Blokhinov V.F.

Proshin N.N.

Tjurin A.M.

Dates

1995-04-10—Published

1990-12-10—Filed

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