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2 252 207

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IPC

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Application

2003129556/04, 2003-10-07

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Start date

2003-10-07

(22)

Actual filing date

2003-10-07

(45)

Published

2005-05-20

(72)

Inventor

Mubarakov R.G.Puljaevskij N.L.Ul'Janov B.A.Shchelkunov B.I.Vasilenko M.A.Seleznev A.V.

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo

METHOD FOR ISOLATION OF FINE DISPERSED, GUMMY AND HIGH BOILING BY-PRODUCTS FROM DICHLOROETHANE PYROLYSIS REACTION GASES FROM VINYLCHLORIDE PRODUCTION Russian patent published in 2005 - IPC

Abstract RU 2252207 C1

FIELD: chemical technology, in particular method for vinylchloride production.

SUBSTANCE: claimed method includes fast gas cooling in quenching column followed by separation of pyrolysis products. Quenching and separation are carried out by barbotage through the layer of liquid concentrated by-products of these gases in quenching column cube. Then steam/gas mixture is brought into contact with returning condensate in regular filling layer of rectification tower with simultaneous purification of steam/gas mixture in rectification zone upstream. Liquid concentrated by-products are additionally rectified in vacuum with isolating and recovery of products having boiling point higher than the same for dichloroethane and distillate recycling. Method of present invention also makes it possible to produce perchloroethylene and tricloroethylene.

EFFECT: vinylchloride of high quality; reduced effort and energy consumption.

2 tbl, 4 dwg, 2 ex

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RU 2 252 207 C1

Authors

Mubarakov R.G.

Puljaevskij N.L.

Ul'Janov B.A.

Shchelkunov B.I.

Vasilenko M.A.

Seleznev A.V.

Dates

2005-05-20—Published

2003-10-07—Filed