Process for recovery of ethylene oxide containing low levels of

Details Process for recovery of ethylene oxide containing low levels of Process for recovery of ethylene oxide containing low levels of

1978-02-21

1979-01-16

Bascomb, Jr., Wilbur L.

Distillation: processes, separatory

Plural distillations performed on same material

One a distillation under positive pressure or vacuum

203 82, 203 98, 203 99, 203DIG19, 26034837, B01D 300, B01D 114, C07D30132

Patent

active

041347978

ABSTRACT:
A process for the recovery of ethylene oxide containing low levels of aldehydic impurities from an impure aqueous ethylene oxide solution containing the same is provided in which the impure solution is treated in a novel multi-stage, countercurrent distillation zone for improved separation of said aldehydic impurities and recovery of an ethylene oxide-containing product stream having the desired low concentration of aldehydic impurities.

REFERENCES:
patent: 2615901 (1952-10-01), McClellan
patent: 3398062 (1968-08-01), Tsao
patent: 3418338 (1968-12-01), Gilman et al.
patent: 3531376 (1970-09-01), Minoda et al.
patent: 4008131 (1977-02-01), Price

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