Patent ID: 6926810
Filing Date: 2005-08-09
Classification: B01D,C07C,Y10S

Abstract:
1. A process for obtaining an organic acid from a feed stream comprising at least one of an organic acid ammonium salt, an organic acid amide, or a alkylamine-organic acid complex, comprising the steps of: mixing a feed stream and at least one azeotroping agent, wherein the feed stream comprises at least one of an organic acid ammonium salt, an organic acid amide, or a alkylamine-organic acid complex, and wherein the organic acid of the salt, amide or complex is selected from the group consisting of monocarboxylic acids, dicarboxylic acids, and tricarboxylic acids having from 2 to 8 carbon atoms; distilling the feed stream by a method comprising the steps of (i) heating at least one of the feed stream, the azeotroping agent, or the mixture of thereby (a) decomposing the ammonium salt, the amide, or the alkylamine-organic acid complex to produce organic acid and (b) producing a first vapor stream that comprises at least one first azeotrope comprising the organic acid and the at least one azeotroping agent; and (ii )separating the first vapor stream from the mixture.