Process and apparatus for purification of a gas stream containin

Details Process and apparatus for purification of a gas stream containin Process and apparatus for purification of a gas stream containin

1996-07-01

1998-06-23

Bhat, Nina

Distillation: processes, separatory

Addition of material to distilland to inhibit or prevent...

For inhibiting or preventing a polymerization reaction

203 9, 203 49, 203 78, 203 84, 568472, B01D 300, B01D 5900

Patent

active

057700214

ABSTRACT:
A process including a first stage wherein a feed gas stream containing acrolein originating, for example from the gas-phase oxidation of propylene to acrolein, is fractionated into a gaseous effluent and a liquid stream in a cooling column operating such that the temperature of the liquid stream at the bottom of the column is lower than or equal to the condensation temperature of the feed gas stream, the difference in temperature not exceeding 20.degree. C. and, a second stage, wherein the gaseous effluent is condensed at a temperature that is lower than 20.degree. C., to give a liquid fraction and a purified gaseous fraction, is disclosed. An apparatus for carrying on the purification process is also disclosed.

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