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2 068 834

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Application

93038473/04, 1993-07-27

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Actual filing date

1993-07-27

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Published

1996-11-10

(72)

Inventor

Kovalenko V.V.Vorozhejkin A.P.Serebrjakov B.R.Nefedov E.S.Borejko N.P.Pavlychev V.N.Efremova V.P.Kotel'Nikov G.R.Zuev V.P.Filin S.A.

(73)

Holder

Voronezhskoe Aktsionernoe Obshchestvo Otkrytogo TipaNizhnekamskoe Proizvodstvennoe Ob"Edinenie

METHOD FOR SEPARATION OF ETHYLBENZENE-STYRENE FRACTION Russian patent published in 1996 - IPC

Abstract RU 2068834 C1

FIELD: petrochemical engineering. SUBSTANCE: in the styrol production via catalytic dehydration of ethylbenzene with subsequent isolation of benzene, toluene, and styrene from "furnace oil", bottoms of styrene distillation column are subjected to additional distillation with returning a part of distilled styrene into rectification step. Up to 30% of bottoms of styrene-recovering columns is mixed with isolated benzene-toluene fraction at ratio 1:0.3 and recycled into "furnace oil" to be separated, the content of inhibitor in bottoms of styrene-recovering column being kept by 25% higher than level of polymer products. EFFECT: increased yield of styrene. 1 dwg, 4 tbl

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RU 2 068 834 C1

Authors

Kovalenko V.V.

Vorozhejkin A.P.

Serebrjakov B.R.

Nefedov E.S.

Borejko N.P.

Pavlychev V.N.

Efremova V.P.

Kotel'Nikov G.R.

Zuev V.P.

Filin S.A.

Dates

1996-11-10—Published

1993-07-27—Filed

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