METHOD REMOVING BENZENE FROM UNSATURATED HYDROCARBONS AND THIOPHENE Russian patent published in 2001 - IPC

Abstract RU 2164908 C1

FIELD: chemical industry. SUBSTANCE: described is method of removing benzene from unsaturated hydrocarbons and thiophene by extractive rectification with dimethylformamide by feeding stock of petroleum and coal tar chemical industry origin simultaneously at weight ratio of 2.5-3.5:1 followed by treatment of desired product withdrawn in vapor phase by stirring at 34- 35 C, at Reynolds number of 15000-45000 and in the presence of catalytic amounts of sulfuric acid. EFFECT: increased yield, improved complete removal of benzene from thiophene and unsaturated hydrocarbons. 1 dwg, 4 tbl

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RU 2 164 908 C1

Authors

Pantukh B.I.

Derevtsov V.I.

Mozalevskij A.P.

Dates

2001-04-10—Published

1999-11-19—Filed