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2 291 849

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(51)

IPC

C07C7/08(2006-01-01)

C07C15/04(2006-01-01)

(21) (22)

Application

2005134045/04, 2005-11-03

(24)

Start date

2005-11-03

(22)

Actual filing date

2005-11-03

(45)

Published

2007-01-20

(72)

Inventor

Busygin Vladimir MikhajlovichBespalov Vladimir PavlovichGil'Manov Khamit KhamisovichMal'Tsev Leonid VeniaminovichChurkin Vladimir NikolaevichZijatdinov Azat ShajmullovichBikmurzin Azat ShaukatovichShatilov Vladimir MikhajlovichKarpov Igor' PavlovichEkimova Alsu MukhametzjanovnaAkhmadullin Razim KhabibullovichBubenkov Vladimir PetrovichChurkin Maksim VladimirovichSakhipov Lazzat Saitovich

(73)

Holder

Otkrytoe Aktsionernoe ObshchestvoOtkrytoe Aktsionernoe Obshchestvo Nauchno-Issledovatel'Skij Institut

BENZENE ISOLATION PROCESS Russian patent published in 2007 - IPC C07C7/08 C07C15/04

Abstract RU 2291849 C1

FIELD: petrochemical processes.

SUBSTANCE: process involves extractive rectification in presence of extractant mainly containing aliphatic N-alkylamide, while toluene is introduced into rectification column point disposed between extractant inlet and the top of column.

EFFECT: reduced loss of extractant with distillate.

6 cl, 3 dwg, 6 tbl, 6 ex

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RU 2 291 849 C1

Authors

Busygin Vladimir Mikhajlovich

Bespalov Vladimir Pavlovich

Gil'Manov Khamit Khamisovich

Mal'Tsev Leonid Veniaminovich

Churkin Vladimir Nikolaevich

Zijatdinov Azat Shajmullovich

Bikmurzin Azat Shaukatovich

Shatilov Vladimir Mikhajlovich

Karpov Igor' Pavlovich

Ekimova Alsu Mukhametzjanovna

Akhmadullin Razim Khabibullovich

Bubenkov Vladimir Petrovich

Churkin Maksim Vladimirovich

Sakhipov Lazzat Saitovich

Dates

2007-01-20—Published

2005-11-03—Filed