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Application

98102991/04, 1998-02-19

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Start date

1998-02-19

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Actual filing date

1998-02-19

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Published

1999-09-10

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Inventor

Khajrudinov I.R.Sultanov F.M.Sajfullin N.R.Nigmatullin R.G.Moroshkin Ju.G.Timofeev A.A.Teljashev Eh.G.Sazhina T.I.

(73)

Holder

Institut Problem Neftekhimpererabotki An Respubliki Bashkortostan

METHOD FOR DEASPHALTING OF PETROLEUM RESIDUES Russian patent published in 1999 - IPC

Abstract RU 2136720 C1

FIELD: petroleum processing. SUBSTANCE: method is proposed for utilizing lubricating oil production or catalytic cracking residual stock and consists in extracting crude oil residues with light hydrocarbons, recovering solvent from deasphalted and asphalt solutions, stripping solvent residues in stripping columns followed by liquefying gaseous part of solvent. According to invention, solvent is recovered from deasphalted solution in separator at supercritical conditions with regard to solvent and liquefaction of vaporized solvent is effected with jet compressor utilizing solvent stream from separator as working medium. EFFECT: simplified process and reduced power consumption. 1 dwg, 1 tbl

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RU 2 136 720 C1

Authors

Khajrudinov I.R.

Sultanov F.M.

Sajfullin N.R.

Nigmatullin R.G.

Moroshkin Ju.G.

Timofeev A.A.

Teljashev Eh.G.

Sazhina T.I.

Dates

1999-09-10—Published

1998-02-19—Filed

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