Process for concentrating aqueous ethylene oxide solutions

Details Process for concentrating aqueous ethylene oxide solutions Process for concentrating aqueous ethylene oxide solutions

1989-04-03

1991-01-08

Manoharan, Virginia

Distillation: processes, separatory

Distilling to separate or remove only water

From organic compound

55 51, 203 42, 203 87, 203 93, 203 94, 203 96, 203 97, 203 98, 549538, 549542, 568867, 568868, B01D 300

Patent

active

049832603

ABSTRACT:
A process for the concentration of ethylene oxide in an impure solution thereof including adding the solution and steam to a distillation column, recovering the gaseous stream therefrom containing ethylene oxide, and progressively condensing the steamed solution in at least two heat exchangers arranged in series, with the absolute pressure of the distillation column and of the exchangers being between about 1.5 and 6 bars and the temperature of the cooling fluid of the last exchanger being between about 5.degree. C. and a maximum temperature 5.degree. C. below the temperature of condensation of pure ethylene oxide at the pressure used.

REFERENCES:
patent: 2615901 (1952-10-01), McClellan
patent: 3165539 (1965-01-01), Lutz
patent: 3745092 (0000-01-01), Vandewater
patent: 3766714 (1973-10-01), Cunningham et al.
patent: 3964980 (1976-06-01), Ozero
patent: 4033617 (1977-07-01), Cocuzza et al.
patent: 4134797 (1979-01-01), Ozero
patent: 4437938 (1984-03-01), Bhise et al.

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