METHOD FOR PRODUCING ACETIC ACID

PROBLEM TO BE SOLVED: To improve separability of an upper (aqueous) layer and a lower (organic) layer particularly in a decanter in a method for producing acetic acid by carbonylation of methanol and/or its reactive derivative. SOLUTION: The method for producing acetic acid by carbonylation of metha...

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Bibliographic Details
Main Author MUSKETT MICHAEL JAMES
Format Patent
LanguageEnglish
Published 13.05.2010
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
APPARATUS THEREFOR
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
CHEMISTRY
GENERAL METHODS OF ORGANIC CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
THEIR RELEVANT APPARATUS
TRANSPORTING
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Summary:PROBLEM TO BE SOLVED: To improve separability of an upper (aqueous) layer and a lower (organic) layer particularly in a decanter in a method for producing acetic acid by carbonylation of methanol and/or its reactive derivative. SOLUTION: The method for producing acetic acid by carbonylation of methanol and/or the reactive derivative in the presence of a group VIII noble metal carbonylation catalyst, methyl iodide co-catalyst at concentration of at least 2 wt.%, optionally at least one promoter, at least finite concentration of water, methyl acetate at concentration of at least 8 wt.% w/w and an acetic acid product, wherein the concentration of acetic acid in the condensed overhead vapor fraction passed to the decanter is maintained at or below 8 wt.%. COPYRIGHT: (C)2010,JPO&INPIT
Bibliography:Application Number: JP20100031861