Apparatus for continuous liquid-phase oxidation reaction

Details Apparatus for continuous liquid-phase oxidation reaction Apparatus for continuous liquid-phase oxidation reaction

1974-09-16

1977-12-13

Tayman, Jr., James H.

Chemistry: physical processes

Physical processes

Crystallization

23285, 23252R, 23263, 134 22R, 134166R, 260 75M, 261121R, 261124, 261126, 261 87, 239560, 239504, B01J 810

Patent

active

040626547

ABSTRACT:
A reaction vessel for continuously producing an aromatic carboxylic acid sparingly soluble in a solvent by liquid-phase oxidizing a corresponding alkyl aromatic compound with a molecular oxygen-containing gas in the presence of a lower aliphatic carboxylic acid solvent and an oxidation catalyst. The adhesion of the aromatic carboxylic acid on the inside wall of the reaction vessel at the interface between the vapor-phase portion and the liquid-phase portion is prevented by locating in the reaction vessel a means such as a porous annular pipe for spraying onto the inside wall of the reaction vessel above the level of the reaction liquid a part of a solvent-catalyst mixture supplied continuously to the reaction vessel.

REFERENCES:
patent: 1447898 (1923-03-01), Schlossstein
patent: 3088974 (1963-05-01), Cier
patent: 3091518 (1963-05-01), Kizer et al.
patent: 3227701 (1966-01-01), Pennington
patent: 3407179 (1968-10-01), Carr
patent: 3630777 (1971-12-01), Ishizawa et al.

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