Process and device for hydrolytically obtaining a carboxylic...

Details Process and device for hydrolytically obtaining a carboxylic... Process and device for hydrolytically obtaining a carboxylic...

C - Chemistry, Metallurgy

07

C

C07C 51/09 (2006.01) B01D 3/00 (2006.01) B01J 8/04 (2006.01) C07C 53/02 (2006.01) C07C 53/08 (2006.01)

Patent

CA 2382831

The present invention relates to a process and to a device for the catalytic hydrolysis of a carboxylate, e.g. methyl acetate, ethyl acetate, i- or n-propyl acetate, i- or n-butyl acetate, allyl acetate and methyl formate, into the corresponding carboxylic acid and alcohol, by means of a combination of a pre-reactor (13) and a reactive distillation column (15). By the combination of a pre-reactor (13) and a reactive distillation column (15), the conversion ratio can be substantially improved. The device furthermore makes it possible to compensate for fluctuations in the supply quantity or in the composition of the feed flow. The product composition can also be controlled in a wide range.

L'invention concerne un procédé et un dispositif permettant d'effectuer une hydrolyse catalytique d'un carboxylate, p. ex. l'acétate de méthyle, l'acétate d'éthyle, l'acétate de i-propyle ou de n-propyle ou l'acétate de n-butyle, l'acétate d'allyle et le formate de méthyle, afin d'obtenir l'acide carboxylique correspondant et de l'alcool. Cette hydrolyse est effectuée au moyen d'un préréacteur (13) combiné avec une colonne (15) de distillation réactive. Cette combinaison d'un préréacteur (13) et d'une colonne (15) de distillation réactive permet d'améliorer sensiblement le rapport de conversion. Ce dispositif permet en outre de compenser les fluctuations intervenant dans les quantités d'alimentation ou dans la composition du flux de charge. Ce procédé permet de sélectionner la composition du produit dans une large mesure.

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