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2 174 532

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IPC

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Application

2000115642/04, 2000-06-15

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Start date

2000-06-15

(22)

Actual filing date

2000-06-15

(45)

Published

2001-10-10

(72)

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 2174532 C1

FIELD: petroleum processing. SUBSTANCE: deasphalting is performed with hydrocarbon solvent, e. g. by n-heptane, in presence of 0.005 to 0.5 wt.% (based on solvent) of a nonionic surfactant at solvent-to-raw material volume ratio between 3:1 to 20:1. EFFECT: increased yield of asphaltene-tar concentrate at lower consumption of solvent. 1 tbl

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RU 2 174 532 C1

Authors

Starshov M.I.

Kajumova N.R.

Polovnjak V.K.

Akhunov R.M.

Abdulkhairov R.M.

Dates

2001-10-10—Published

2000-06-15—Filed