Title:
有機酸の回収
Document Type and Number:
Japanese Patent JP2007522136
Kind Code:
A
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 CO2 are 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.
Inventors:
Versace, Dan, W
Edgeman, Timothy, Jay
Edgeman, Timothy, Jay
Application Number:
JP2006551619A
Publication Date:
August 09, 2007
Filing Date:
January 28, 2005
Export Citation:
Assignee:
Zchem Inc.
International Classes:
C07C51/487; C07C51/02; C07C51/42; C07C51/46; C07C51/48; C07C51/493; C07C53/02; C07C53/08; C07C53/122; C07C55/10; C07C59/01; C07C59/06; C07C59/08; C07C59/265; C12P7/52; C12P7/54; C12P7/56
Domestic Patent References:
| JPS5929633A | 1984-02-16 | |||
| JPS61176552A | 1986-08-08 | |||
| JPS61176553A | 1986-08-08 |
Foreign References:
| US4405717A | 1983-09-20 |
Attorney, Agent or Firm:
Kenzo Hara International Patent Office