Method and apparatus for making acetic acid with improved...

Details Method and apparatus for making acetic acid with improved... Method and apparatus for making acetic acid with improved...

2007-09-27

2009-11-17

Puttlitz, Karl J (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acids and salts thereof

C562S607000

Reexamination Certificate

active

07619113

ABSTRACT:
An improved method of producing acetic acid includes condensing overhead vapor from a light ends column and decanting the condensed vapor to a light phase and a heavy phase. The heavy phase consists predominantly of methyl iodide and at least a portion of the decanted heavy phase is refluxed to the light ends column. Acetic acid content of the light ends column overhead stream and water content of the light ends column product (sidedraw) stream are both decreased, improving purification efficiency.

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Applied Homogeneous Catalyst With Organometallic Compounds, Cornils et al., Ed. (Beach Edition) (Wylie, Weinheim, Federal Republic of Germany 2000), Chapter 2, Parts 2.1.2 and following, pp. 104-137.

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