Separation of styrene from ethyl benzene by extractive distillat

Details Separation of styrene from ethyl benzene by extractive distillat Separation of styrene from ethyl benzene by extractive distillat

1990-02-26

1990-09-25

Bascomb, Wilbur

Distillation: processes, separatory

Adding material to distilland except water or steam per se

Organic compound

203 58, 203 60, 585805, 585806, 585808, B01D 340, C07C 708

Patent

active

049591282

ABSTRACT:
Ethyl benzene cannot be easily removed from styrene by distillation because of the closeness of their boiling points. Ethyl benzene can be readily separated from styrene by means of extractive distillation using certain nitrogenous organic compounds. Typical effective agents are adiponitrile, methyl glutaronitrile and nitrobenzene.

REFERENCES:
patent: 2441827 (1948-05-01), McKinnis
patent: 2477715 (1949-08-01), Berg et al.
patent: 2494274 (1950-01-01), Woerner
patent: 3018228 (1962-01-01), Cornell
patent: 3210259 (1965-10-01), Cornell et al.
patent: 3684665 (1972-08-01), Abe et al.
patent: 3763015 (1973-06-01), Morimoto et al.
patent: 4031153 (1977-06-01), Haskell

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