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2 039 759

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C1

(51)

IPC

(21) (22)

Application

4818360/05, 1990-03-19

(22)

Actual filing date

1990-03-19

(45)

Published

1995-07-20

(72)

Inventor

Volkov R.N.Kalenov E.A.Smirnov V.S.

(73)

Holder

Voronezhskij Filial Gosudarstvennogo Predprijatija Institut Sinteticheskogo Kauchuka Im.Akad.S.V.Lebedeva"Voronezhskij Tekhnologicheskij Institut

METHOD FOR PURIFICATION OF RECYCLED HYDROCARBONS IN PRODUCTION OF POLYSTYRENE AND ITS COPOLYMERS Russian patent published in 1995 - IPC

Abstract RU 2039759 C1

FIELD: chemical industry. SUBSTANCE: method involves providing self-evaporation of recycled hydrocarbons from active mass under conditions of reduction of pressure; cooling in scrubber by hydrocarbon condensate and separating hydrocarbons from difficult-to-boil hydrocarbons; rectifying hydrocarbons from lower part of scrubber together with non-purified hydrocarbons of second stage of evaporation; destructing rectification stillage residue and separating in apparatus of single-stage evaporation; recycling high-volatility fraction for rectification. EFFECT: increased efficiency of method by reduced loss. 1 dwg, 1 tbl

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RU 2 039 759 C1

Authors

Volkov R.N.

Kalenov E.A.

Smirnov V.S.

Dates

1995-07-20—Published

1990-03-19—Filed

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