Process for the production of acetic acid

Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acids and salts thereof

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562517, 562520, 562406, 562607, 562608, C07C 5144, C07C 5112

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active

054162378

ABSTRACT:
In a process for the production of acetic acid by carbonylation of methanol in the presence of a rhodium carbonylation catalyst, methyl iodide and an iodide salt stabiliser the improvement resides in maintaining a finite concentration of water of up to about 10% by weight and a methyl acetate concentration of at least 2% by weight in the liquid reaction composition and recovering the acetic acid product by passing the liquid reaction composition through a flash zone to produce a vapour fraction which is passed to a single distillation column from which an acetic acid product is removed.

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Eby, R. T. & Singleton, T. C., Applied Industrial Catalysis, vol. 1, pp. 275-296 (1983).

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