Optimized liquid-phase oxidation

Details Optimized liquid-phase oxidation Optimized liquid-phase oxidation

C - Chemistry, Metallurgy

07

B

C07B 33/00 (2006.01) B01J 10/00 (2006.01) B01J 19/24 (2006.01) C07C 51/21 (2006.01) C07C 51/235 (2006.01)

Patent

CA 2576632

Disclosed is an optimized process and apparatus 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 qui permettent d'effectuer de manière plus efficace et plus économique l'oxydation en phase liquide d'un composé oxydable. L'oxydation en phase liquide selon l'invention s'effectue dans un réacteur à colonne à bulles qui permet une réaction hautement efficace à des températures relativement basses. Lorsque le composé oxydé est du paraxylène et que le produit de la réaction d'oxydation est de l'acide téréphtalique brut ("crude terephthalic acid" ou CTA), le produit CTA obtenu peut être purifié et séparé par des techniques plus économiques que celles qui seraient utilisées si le CTA était formé par un processus classique d'oxydation à haute température.

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