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2 075 749

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C1

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IPC

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Application

94013682/04, 1994-04-18

(22)

Actual filing date

1994-04-18

(45)

Published

1997-03-20

(72)

Inventor

Khajrudinov I.R.Sultanov F.M.Sajfullin N.R.Kul'Chitskaja O.V.Gaskarov N.S.

(73)

Holder

Institut Problem Neftekhimpererabotki An Respubliki Bashkortostan

METHOD OF DETERMINING PERCENTAGE OF SUBSTANCES INSOLUBLE IN TOLUENE, PETROLEUM PRODUCTS, AND PITCHES Russian patent published in 1997 - IPC

Abstract RU 2075749 C1

FIELD: petroleum processing. SUBSTANCE: method consists in extracting petroleum product (pitch) with descending toluene stream, wherein, to reduce analysis duration and to decrease consumption of toluene and substance to be analyzed, extraction is conducted in toluene recycling mode including evaporation of toluene from filtrate and condensing its vapor. EFFECT: accelerated process and reduced cost. 1 dwg, 1 tbl

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RU 2 075 749 C1

Authors

Khajrudinov I.R.

Sultanov F.M.

Sajfullin N.R.

Kul'Chitskaja O.V.

Gaskarov N.S.

Dates

1997-03-20—Published

1994-04-18—Filed

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