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2 182 590

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Application

99117235/04, 1999-08-09

(24)

Start date

1999-08-09

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Actual filing date

1999-08-09

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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 2182590 C2

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

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RU 2 182 590 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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