Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acids and salts thereof
Reexamination Certificate
2011-08-02
2011-08-02
Keys, Rosalynd (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acids and salts thereof
C562S517000
Reexamination Certificate
active
07989659
ABSTRACT:
An improved apparatus and method of producing acetic acid includes condensing overhead vapor to provide reflux to the light ends column as well as condensing vapor from a central portion of the light ends column to increase capacity. Throughput or load on the light ends column is substantially reduced without compromising product quality.
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Nagel Nathan Jeremy
Olsson Fred Ronald
Picard Wayne David
Powell Nathan Kirk
Shaver Ronald David
Celanese International Corporation
Keys Rosalynd
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