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2 039 756

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IPC

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Application

4940815/05, 1991-06-03

(22)

Actual filing date

1991-06-03

(45)

Published

1995-07-20

(72)

Inventor

Molodyka A.V.Kovtunenko A.V.Ivshin P.M.Shubin Ju.A.Marushak G.M.Kuz'Menko V.V.

(73)

Holder

Voronezhskij Gosudarstvennyj Proektnyj I Nauchno-Issledovatel'Skij Institut Promyshlennosti Sinteticheskogo Kauchuka

METHOD FOR RECOVERY OF HYDROCARBONACEOUS SOLVENT FROM RECYCLED SOLVENT IN PRODUCTION OF SYNTHETIC RUBBER Russian patent published in 1995 - IPC

Abstract RU 2039756 C1

FIELD: chemical industry. SUBSTANCE: method involves water degassing of hydrocarbonaceous solution of rubber by allowing solvent to settle from suspended moisture; providing azeotropic rectification drying; rectifying dried solvent from high-boiling components; rectifying stillage liquid in accordance with dual-column pattern by supplying vapor phase from top of first column into still of second column; recycling stillage liquid of second column to top portion of first column and extracting recycled flow in liquid phase at the point between zone of collection of distillate from top of second column and point of supplying into first column with subsequent directing recycled flow to rectification column for rectification of dried solvent from high-boiling components. EFFECT: increased efficiency and high quality of recovered solvent. 1 dwg

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RU 2 039 756 C1

Authors

Molodyka A.V.

Kovtunenko A.V.

Ivshin P.M.

Shubin Ju.A.

Marushak G.M.

Kuz'Menko V.V.

Dates

1995-07-20—Published

1991-06-03—Filed

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