Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acids and salts thereof
Patent
1988-04-25
1989-08-08
Moyer, Donald B.
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acids and salts thereof
562409, 562412, 562413, 562416, 2105003, C07C 51265
Patent
active
048554910
ABSTRACT:
A method for the continuous, catalytic production of an aromatic carboxylic acid product by liquid-phase, exothermic oxidaion of an aromatic alkyl with an oxygen-containing gas and a solvent medium in an oxidation reactor and utilizing reverse osmosis is disclosed. In particular, a multiple ingredient or component-containing slurry product stream is withdrawn from the reactor, the slurry product stream is then separated to produce a product-containing stream and at least one mother liquor stream which contains, in addition to a number of desirable process stream components, such as oxidation reaction catalysts, a number of undesirable process stream impurities. The impurities are selectively removed from the mother liquor stream by passing at least a portion of the mother liquor stream through a reverse osmosis separation device to produce a catalyst-bearing stream having a relatively lesser impurities-to-catalyst weight ratio and a purge stream having a relatively greater impurities-to-catalyst weight ratio.
REFERENCES:
patent: 3092658 (1963-06-01), Baldwin et al.
patent: 3170768 (1965-02-01), Baldwin
Chew Calvin T.
Gee John C.
Amoco Corporation
Blumberg Gunar J.
Magidson William M.
Medhurst Ralph C.
Moyer Donald B.
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