Method for recovering acetic acid from aqueous streams

Details Method for recovering acetic acid from aqueous streams Method for recovering acetic acid from aqueous streams

1993-07-12

1995-04-25

Bascomb, Jr., Wilbur

Distillation: processes, separatory

Distilling to separate or remove only water

From organic compound

203 42, 203 46, 203DIG9, 562608, B01D 314, B01D 1100, C07C 5144

Patent

active

054095794

ABSTRACT:
Disclosed is a method and apparatus for recovering acetic acid from an acetic acid/water waste stream which includes a dehydration column into which the stream is fed and a liquid-liquid extraction system for recovering acetic acid from the condensate of the overhead stream of the dehydration column. Optionally, low pressure and/or high pressure absorber systems are provided to process vapor and/or liquid streams associated with the recovery system and/or the plant in which the acetic acid is used to further the recovery of acetic acid and reduce atmospheric pollution.

REFERENCES:
patent: 998234 (1911-07-01), Crossley et al.
patent: 2269163 (1942-01-01), Othmer
patent: 2333756 (1943-11-01), Wentworth
patent: 2588268 (1952-03-01), Mercer et al.
patent: 4143066 (1979-03-01), Kalcevic
patent: 4230887 (1980-10-01), Mitchell
patent: 4769487 (1988-09-01), Hundley et al.
patent: 5057192 (1991-10-01), Zoeller et al.
patent: 5078900 (1992-01-01), Wegner
patent: 5175357 (1992-12-01), Van Brunt

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