Process for the preparation of alkylene carbonate and/or...

Details Process for the preparation of alkylene carbonate and/or... Process for the preparation of alkylene carbonate and/or...

C - Chemistry, Metallurgy

07

D

C07D 317/38 (2006.01) B01D 53/02 (2006.01) C07C 29/10 (2006.01) C07C 29/12 (2006.01) C07C 31/20 (2006.01) C07D 301/10 (2006.01)

Patent

CA 2723988

The invention provides a reaction system for the production of an alkylene carbonate and/or an alkylene glycol comprising: an epoxidation zone containing an epoxidation catalyst located within an epoxidation reactor; a carboxylation zone containing an iodide-containing carboxylation catalyst located within an alkylene oxide absorber; and one or more purification zones containing a purification absorbent capable of reducing the quantity of iodide-containing impurities in a feed comprising a recycle gas, which purification zones are located upstream from the epoxidation zone; and a process for the production of an alkylene carbonate and/or an alkylene glycol.

Cette invention concerne un système de réaction destiné à la production d'un carbonate d'alkylène et/ou d'un alkylène-glycol, qui comprend: une zone d'époxydation présentant un catalyseur d'époxydation situé à l'intérieur d'un réacteur d'époxydation; une zone de carboxylation présentant un catalyseur de carboxylation contenant de l'iodure situé à l'intérieur d'un absorbeur d'oxyde d'alkylène; et une ou plusieurs zones de purification présentant un absorbant de purification pouvant réduire la quantité d'impuretés contenant de l'iodure dans une charge d'alimentation comprenant un gaz de recyclage, lesdites zones de purification étant situées en amont à partir de la zone d'époxydation. L'invention concerne en outre un processus de production d'un carbonate d'alkylène et/ou d'un alkylène-glycol.

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