Method of purifying acetic acid

Details Method of purifying acetic acid Method of purifying acetic acid

1997-03-07

1999-06-29

Manoharan, Virginia

Distillation: processes, separatory

Distilling to separate or remove only water

From organic compound

203 25, 203 27, 203 73, 203 80, 203DIG8, 203DIG21, 562600, 562608, B01D 310, C07C 5144

Patent

active

059164220

ABSTRACT:
A method for purifying acetic acid containing at least one component selected from the group consisting of unsaturated compounds and carbonyl compounds as an impurity involves the step of purifying the acetic acid with a distillation column having at least 30 plates by operating the distillation column at a pressure ranging from 40 to 760 mmHg and a reflux ratio of at least 4, and yields a high-quality acetic acid which rates high in the potassium permanganate test without needing of the addition of any chemical to the acetic acid to be purified and a large amount of energy, and is economical.

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Derwent Patent Family Data and Abstract for each of the above-identified Japanese references.

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