C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 53/08 (2006.01) C07C 51/12 (2006.01)
Patent
CA 2290011
In a process for the continuous production of acetic acid by feeding methanol and/or a reactive derivative thereof and carbon monoxide to a carbonylation reactor wherein there is maintained a liquid reaction composition comprising methyl acetate, water, Group VIII noble metal carbonylation catalyst, hydrocarbyl halide co-catalyst, optionally at least one promoter, and acetic acid, the methyl acetate concentration in the liquid reaction composition is maintained at a pre-determined value by monitoring the ratio of methanol and/or reactive derivative thereof to carbon monoxide being converted to acetic acid and adjusting the methanol and/or reactive derivative thereof feed rate in response thereto in a manner such that the methyl acetate concentration is maintained at the pre-determined value. This can assist in reducing build up of methyl acetate in the reactor during periods of loss of activity.
Muskett Michael James
Watson Derrick John
Bp Chemicals Limited
Fetherstonhaugh & Co.
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