METHOD AND APPARATUS FOR SEQUESTERING ENTRAINED AND VOLATILE CATALYST SPECIES IN CARBONYLATION PROCESS

摘要

PROBLEM TO BE SOLVED: To provide a method for sequestering volatile catalyst species in a carbonylation process.

SOLUTION: A method and apparatus includes contacting the product stream with a vinyl pyridine or a vinyl pyrrolidone resin bed which is operative to sequester entrained or volatile catalytic species. The invention is particularly useful in connection with the iridium catalyzed carbonylation of methanol wherein the loss of entrained or volatile catalyst species depletes the catalytic content of the reactor. The resin may be digested in order to recover the catalytic metals.

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