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2 182 591

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IPC

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Application

99117566/04, 1999-08-09

(24)

Start date

1999-08-09

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Actual filing date

1999-08-09

(45)

Published

2002-05-20

(72)

Inventor

Ziganshin G.K.Osintsev A.A.Ziganshin K.G.Serdjuk F.I.

(73)

Holder

Ziganshin Galimzjan Karimovich

METHOD OF TREATMENT OF OILY FRACTIONS Russian patent published in 2002 - IPC

Abstract RU 2182591 C2

FIELD: petroleum processing. SUBSTANCE: invention relates to the treatment of oily fractions in units of selective purification of oily fractions using solvents, for example, phenol, furfurol, N-methyl-2- pyrrolidone and others. The raw is contacted with the selective solvent by countercurrent method in multistep reactor to yield raffinate and extract solutions followed by regeneration of solvent from these solution to yield raffinate and extract. Part of extract and part of raffinate solution are added into extractor between addition of the raw and extract. EFFECT: enhanced withdrawal of raffinate. 5 tbl, 9 dwg, 5 ex

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RU 2 182 591 C2

Authors

Ziganshin G.K.

Osintsev A.A.

Ziganshin K.G.

Serdjuk F.I.

Dates

2002-05-20—Published

1999-08-09—Filed

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