Process for the production of bisphenol-a

Details Process for the production of bisphenol-a Process for the production of bisphenol-a

C - Chemistry, Metallurgy

07

C

C07C 37/20 (2006.01) B01D 15/18 (2006.01)

Patent

CA 2494850

The invention provides a process for the continuous production of bisphenol-A by continuously reacting phenol using an acid catalyst resin and continuously or essentially continuously removing water from the system. Continuous removal of water allows for increased catalytic activity of the resin and therefore improved productivity. Removal is facilitated by conducting the process in a carousel simulated moving bed device. Process efficiency is further enhanced by conducting the process in a device configured to have a combination of series, parallel or reverse flows which are optionally arranged so the process results in higher yield and lower impurities.

L'invention concerne un procédé de production en continu de bisphénol A, consistant à faire réagir du phénol en continu au moyen d'une résine catalyseur acide, et à éliminer l'eau du système en continu, ou sensiblement en continu. L'élimination en continu de l'eau permet d'accroître l'activité catalytique de la résine et, de ce fait, d'améliorer la productivité. L'élimination est facilitée en mettant en oeuvre le procédé dans un dispositif à lit mobile simulé, du type en carrousel. Le rendement du procédé est encore amélioré en mettant en oeuvre le procédé dans un disposiitif configuré de manière à présenter une combinaison d'écoulements en série, parallèles ou inverses qui sont agencés à volonté, de manière à avoir un procédé ayant un rendement plus élevé avec une quantité d'impuretés réduite.

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