Process for production of aromatic polycarboxylic acids

Details Process for production of aromatic polycarboxylic acids Process for production of aromatic polycarboxylic acids

1988-05-27

1989-08-08

Lone, Werren B.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acids and salts thereof

562413, 562416, 562417, C07C 51265

Patent

active

048554928

ABSTRACT:
A continuous process for producing a polycarboxylic acid product is disclosed. The process comprises combining a methyl substituted aromatic hydrocarbon, an oxidation catalyst, and an oxygen-containing gaseous stream in a reaction zone to produce a reaction mixture. The oxygen-containing gaseous stream includes non-condensible gases. The reaction mixture in the reaction zone is subjected to a predetermined temperature and pressure for a predetermined residence time to produce an admixture of reactants and reaction products. The reaction products include a vapor phase and a product-containing liquid phase. Heat is removed from the product-containing liquid phase by withdrawing a portion of such liquid stream from the reaction zone and passing such reaction zone-removed portion to a heat-removal/separation zone.

REFERENCES:
patent: 4357475 (1980-11-01), Hanotier et al.
patent: 4560793 (1985-12-01), Hashizume et al.

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