Inventors:
Dan W. Verser - Menlo Park CA, US
Timothy J. Eggeman - Lakewood CO, US
Assignee:
ZeaChem, Inc. - Golden CO
International Classification:
C07C 59/265, C07C 62/00, C07C 69/66, C07C 59/08, C12P 7/62, C12P 7/56, C12P 7/54, C12P 7/52, C12P 7/44
US Classification:
435135, 435139, 435140, 435141, 435142, 435144, 560179, 562508, 562584, 562589
Abstract:
A method is disclosed for the recovery of an organic acid from a dilute salt solution in which the cation of the salt forms an insoluble carbonate salt. A tertiary amine and COare introduced to the solution to form the insoluble carbonate salt and a complex between the acid and an amine. A water immiscible solvent, such as an alcohol, is added to extract the acid/amine complex from the dilute salt solution to a reaction phase. The reaction phase is continuously dried and a product between the acid and the solvent, such as an ester, is formed.