METHOD OF PURIFYING BENZENE Russian patent published in 2001 - IPC

Abstract RU 2164907 C1

FIELD: organic chemistry. SUBSTANCE: method comprises removing coal-tar chemical industry benzene and benzene resulting from fractions of pyrolysis of petroleum products, from impurities of saturated and unsaturated hydrocarbons, thiophene and carbon disulfide. Benzene is removed from saturated, unsaturated nonaromatic hydrocarbons, thiophene and carbon disulfide by extractive rectification using mixture of dimethylformamide and toluene as extracting agent at weight ratio of dimethylformamide and toluene as extracting agent at weight ratio of dimethylformamide, 90-95 and toluene, 5-10. EFFECT: more efficient purification method. 4 ex, 4 tbl, 1 dwg

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RU 2 164 907 C1

Authors

Pantukh B.I.

Derevtsov V.I.

Egoricheva S.A.

Dates

2001-04-10—Published

1999-11-16—Filed