Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acids and salts thereof
Patent
1994-05-27
1995-09-12
Killos, Paul J.
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acids and salts thereof
C07C 5142
Patent
active
054498244
ABSTRACT:
This invention provides an improved method for recovering an organic acid as a salt from various process streams by addition of a crystallizing base to a concentrated solution of neutralized organic acid. The addition of such a base causes crystallization of the salt. This process provides more efficient recovery of organic acid salt from a fermentation process stream than traditional crystallization and it may be used essentially as a one step purification process. The improved method is particularly applicable to the recovery of trisodium or tripotassium citrate from process streams produced in the fermentation and recovery of citric acid, with the addition of a crystallizing base such as sodium hydroxide, sodium carbonate, potassium hydroxide, or ammonia. The resulting product may be combined with an anticaking agent and/or dried to provide a particularly free flowing product.
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Felman Steven W.
Patel Chetna
Patwardhan Bhalchandra H.
Solow David J.
Boguslaski Mary G.
Haarmann & Reimer Corp.
Killos Paul J.
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