Optimized liquid-phase oxidation in a bubble column reactor

Details Optimized liquid-phase oxidation in a bubble column reactor Optimized liquid-phase oxidation in a bubble column reactor

B - Operations, Transporting

01

J

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

Patent

CA 2576212

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.

La présente invention concerne un procédé et un appareil optimisés de façon à réaliser plus efficacement et plus économiquement l'oxydation en phase liquide d'un composé oxydable. Une telle oxydation en phase liquide s'effectue dans une colonne à bulles qui garantit une efficacité élevée de la réaction à des températures relativement basses. Lorsque le composé oxydé est le para-xylène et que le produit issu de la réaction d'oxydation est l'acide téréphtalique brut, l'invention fait que ce produit se prête à la purification et à la séparation suivant des techniques plus économiques que celles qu'on pourrait employer si ce même produit était obtenu par un procédé d'oxydation conventionnel à hautes températures.

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