公开(公告)号：WO0194288A2

公开(公告)日：2001-12-13

申请号：PCT/US0117191

申请日：2001-05-25

Applicant: EASTMAN CHEM CO

Inventor： COLLINS NICK ALLEN ,  PERRI STEVEN THOMAS

IPC: C12P7/60 ,  C07D307/62 ,  C07C51/00

CPC classification number: C07D307/62

Abstract: A process for recovering an organic acid or a metal salt thereof includes contacting an alcoholic phase containing one or more organic acid(s) or metal salt(s) thereof with water under conditions effective to provide an aqueous phase containing a portion of the organic acid(s) or metal salt (s) thereof. The aqueous phase does not contain substantial amounts of the alcohol(s). This process can also include recovery of the organic acid(s) or metal salt(s) thereof from the aqueous phase.

Abstract translation: 回收有机酸或其金属盐的方法包括在有效提供含有一部分有机酸的水相的条件下使含有一种或多种有机酸或其金属盐的醇相与水接触 或其金属盐。 水相不含大量的醇。 该方法还可以包括从水相中回收有机酸或其金属盐。

公开(公告)号：WO0166508A3

公开(公告)日：2002-05-02

申请号：PCT/US0107140

申请日：2001-03-06

Applicant: EASTMAN CHEM CO

Inventor： COLLINS NICK ALLEN ,  SHELTON MARK ROBERT ,  TINDALL GEORGE WILLIAM ,  PERRI STEVEN THOMAS ,  O'MEADHRA RUAIRI SEOSAMH ,  SINK CHESTER WAYNE ,  ARUMUGAM BHASKAR K ,  HUBBS JOHN CLARK

IPC: B01D9/02 ,  C07C51/43 ,  C07C51/47 ,  C07C59/215 ,  C07C51/48 ,  C07C53/02 ,  C07C53/08 ,  C07C53/122 ,  C07C53/124 ,  C07C55/10 ,  C07C57/13 ,  C07C57/145 ,  C07C59/08 ,  C07C59/105 ,  C07C59/19 ,  C07C59/245 ,  C07C59/255 ,  C07C59/265 ,  C07C59/347 ,  C07D307/62

CPC classification number: C07C51/43 ,  Y02P20/582 ,  Y10S435/803 ,  Y10S435/876 ,  Y10S435/896 ,  C07C59/347

Abstract: A process for recovering a desired organic acid from a solution includes the steps of: providing an aqueous solution including at least one desired organic acid or its acid anion; adjusting the proton concentration in the aqueous solution to a desired level, with the desired proton concentration being selected, at least in part, by the amount of available protons needed to associate with the acid anions of the desired organic acid(s) to be recovered and/or acid anions that are weaker than the desired organic acids; and recovering at least a portion of the at least one desired organic acid from the aqueous phase. The desired proton concentration can be based on the amount of available protons being greater than, less than or substantially equal, to the amount of protons needed to associate with the anion of the desired organic acid(s) and acid anions that are weaker than the desired organic acid(s). Specific examples of suitable organic acids include, but are not limited to, ascorbic, succinic, tartaric, glyconic, gulonic, citric, lactic, malic, maleic, acetic, formic, gluconic pyruvic, propionic, butyric, itaconic acids and mixtures thereof. One embodiment of the present invention relates to the recovery of 2-keto-L-gulonic acid (KLG) from aqueous solutions such as fermentation baths.

Abstract translation: 从溶液中回收所需有机酸的方法包括以下步骤：提供包含至少一种所需有机酸或其酸阴离子的水溶液; 将所述水溶液中的质子浓度调节到所需的水平，其中所需质子浓度至少部分地被选择与需要回收的所需有机酸的酸性阴离子缔合所需的可用质子的量 和/或弱于所需有机酸的酸性阴离子; 以及从所述水相中回收所述至少一种所需有机酸的至少一部分。 期望的质子浓度可以基于可用质子的量大于，小于或基本上等于与所需有机酸的阴离子和酸阴离子相比所需的质子的量，其弱于 所需的有机酸。 合适的有机酸的具体实例包括但不限于抗坏血酸，琥珀酸，酒石酸，葡萄糖酸，古洛糖酸，柠檬酸，乳酸，苹果酸，马来酸，乙酸，甲酸，葡糖酸丙酮酸，丙酸，丁酸，衣康酸及其混合物。 本发明的一个实施方案涉及从水溶液如发酵浴中回收2-酮-L-古洛糖酸（KLG）。