Process for the production of acetic acid

Details Process for the production of acetic acid Process for the production of acetic acid

2007-04-10

2007-04-10

Witherspoon, Sikarl A. (Department: 1621)

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

Organic compounds

Carboxylic acids and salts thereof

C562S522000

Reexamination Certificate

active

10509831

ABSTRACT:
A process for the production of acetic acid which comprises carbonylating methanol and/or a reactive derivative thereof in one or more reactors in a liquid reaction composition comprising iridium carbonylation catalyst, ruthenium promoter, methyl iodide co-catalyst, methyl acetate, acetic acid and water. The liquid reaction composition from the one or more reactors is passed to one or more flash separation stages to form (i) a vapor fraction comprising condensable components and a low pressure off-gas comprising carbon monoxide and (ii) a liquid fraction comprising iridium carbonylation catalyst, ruthenium promoter and acetic acid solvent. The condensable components are separated from the low pressure off-gas. The concentration of carbon monoxide in the low pressure off-gas is maintained according to the formula: Y>mX+C wherein Y is the molar concentration of carbon monoxide in the low pressure off-gas, X is the concentration in ppm by weight of ruthenium in the liquid reaction composition, m is about 0.012 and C is about −8.7.

REFERENCES:
patent: 5237097 (1993-08-01), Smith et al.
patent: 5510524 (1996-04-01), Garland et al.
patent: 5672743 (1997-09-01), Garland et al.
patent: 5770768 (1998-06-01), Denis et al.
patent: 5877348 (1999-03-01), Ditzel et al.
patent: 5942460 (1999-08-01), Garland et al.
patent: 6472558 (2002-10-01), Key et al.
patent: 0 846 674 (1998-06-01), None
patent: 0 849 250 (1998-06-01), None
patent: 2 795 410 (2000-12-01), None

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