Optimized liquid-phase oxidation

C - Chemistry – Metallurgy – 07 – C

Patent

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C07C 51/265 (2006.01) C07C 63/26 (2006.01)

Patent

CA 2576490

Disclosed is an optimized process for more efficiently and economically carrying out the liquid-phase oxidation of an oxidizable compound. Such liquid- phase oxidation is carried out in a bubble column reactor that provides for a highly efficient reaction at relatively low temperatures. When the oxidized compound is para-xylene and the product from the oxidation reaction is crude terephthalic acid (CTA), such CTA product can be purified and separated by more economical techniques than could be employed if the CTA were formed by a conventional high-temperature oxidation process.

L'invention porte sur un procédé et un appareil optimisés permettant de réaliser de manière plus efficace et plus économique l'oxydation en phase liquide d'un composé oxydable. Cette oxydation en phase liquide est réalisée dans un réacteur à colonne à bulles qui produit une réaction à haut rendement et à des températures relativement basses. Lorsque le composé oxydé est le paraxylène et que le produit de la réaction d'oxydation est l'acide téréphtalique brut, ce produit de l'acide téréphtalique brut peut-être purifié et séparé selon plusieurs techniques économiques qui pourraient être utilisées si l'acide téréphtalique brut avait été obtenu par un procédé d'oxydation traditionnel à hautes températures.

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