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2 467 812

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IPC

B08B3/08(2006-01-01)

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Application

2011128987/05, 2011-07-13

(24)

Start date

2011-07-13

(22)

Actual filing date

2011-07-13

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Published

2012-11-27

(72)

Inventor

Pogrebtsov Valerij PavlovichBorejko Natal'Ja PavlovnaTrifonova Ol'Ga MikhajlovnaKabanova Roza ZagitovnaGalimzjanov Ravil' MuzagitovichZotov Viktor Jur'EvichGatin Il'Jas RizaevichZaljaev Al'Bert Gil'Mutdinovich

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo

METHOD OF REMOVING POLYMER DEPOSITION FROM RECTIFICATION EQUIPMENT Russian patent published in 2012 - IPC B08B3/08

Abstract RU 2467812 C1

FIELD: process engineering.

SUBSTANCE: invention relates to removal of polymer deposition from rectification equipment in production of styrene and polypropylene. Proposed method consists in processing rectification equipment by structure breaking solution based on 2,2'6,6'-tetra methyl-4-oxopiperidine-1-oxyl with mass concentration of active components of 0.0001-40%. Structure breaking system includes additionally derivatives of hydroxylamine of general formula R, R, NOH where R is alkyl group of 1 to 4 atoms of carbon. Note here that NO:NOH ratio equals 1:0.05-0.3.

EFFECT: higher efficiency and yield, improved quality, reduced costs.

1 tbl, 12 ex

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RU 2 467 812 C1

Authors

Pogrebtsov Valerij Pavlovich

Borejko Natal'Ja Pavlovna

Trifonova Ol'Ga Mikhajlovna

Kabanova Roza Zagitovna

Galimzjanov Ravil' Muzagitovich

Zotov Viktor Jur'Evich

Gatin Il'Jas Rizaevich

Zaljaev Al'Bert Gil'Mutdinovich

Dates

2012-11-27—Published

2011-07-13—Filed