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2 175 341

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IPC

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Application

2000115641/04, 2000-06-15

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Start date

2000-06-15

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Actual filing date

2000-06-15

(45)

Published

2001-10-27

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Inventor

Starshov M.I.Kajumova N.R.Polovnjak V.K.Akhunov R.M.Abdulkhairov R.M.

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Vserossijskij Neftegazovyj Nauchno-Issledovatel'Skij Institut

HIGH-VISCOSITY PETROLEUM AND NATURAL BITUMEN DEASPHALTING PROCESS Russian patent published in 2001 - IPC

Abstract RU 2175341 C1

FIELD: petroleum processing. SUBSTANCE: deasphalting is carried out with hydrocarbon solvent, for example n-heptane, to which cationic surfactant "SNPKh-1004" is added to concentration varying between 0.005 and 0.5 wt.% at volume ratio of solvent to raw material from 3:1 to 20:1. EFFECT: increased yield of asphalt- tar concentrate at lower solvent consumption. 1 tbl

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RU 2 175 341 C1

Authors

Starshov M.I.

Kajumova N.R.

Polovnjak V.K.

Akhunov R.M.

Abdulkhairov R.M.

Dates

2001-10-27—Published

2000-06-15—Filed