B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
B01J 8/00 (2006.01) B01J 3/04 (2006.01) C07C 51/12 (2006.01) C07C 53/08 (2006.01)
Patent
CA 2281352
A method of controlling the carbon monoxide flow to a reactor wherein acetic acid is produced continuously by feeding carbon monoxide through a control valve and methanol and/or a reactive derivative thereof, there being maintained in the reactor a liquid reaction composition comprising at least 5% w/w methyl acetate, a finite concentration of water, from 1 to 30% w/w methyl iodide, a Group VIII noble metal catalyst, optionally at least one promoter and acetic acid comprising the remainder of the composition which method comprises the steps of:- (i) measuring the carbon monoxide flow through the control valve; (ii) performing a background calculation to arrive at a time-averaged carbon monoxide flow rate; (iii) adding a constant value to the time-averaged carbon monoxide flow to arrive at a maximum allowable carbon monoxide flow rate; and (iv) feeding information comprising the calculated maximum allowable carbon monoxide flow rate to a control system which operates in a manner such that the carbon monoxide flow rate to the reactor can not exceed the calculated maximum flow rate at any time.
Bp Chemicals Limited
Fetherstonhaugh & Co.
LandOfFree
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