公开(公告)号：WO2004087631A3

公开(公告)日：2004-12-02

申请号：PCT/IL2004000203

申请日：2004-03-03

Applicant: STALEY MFG CO A E ,  BANIEL AVRAHAM ,  VITNER ASHER ,  GONEN DAVID ,  HEIDEL DAVID

Inventor： BANIEL AVRAHAM ,  VITNER ASHER ,  GONEN DAVID ,  HEIDEL DAVID

IPC: C07C51/43 ,  C07C51/48 ,  C07C59/265

CPC classification number: C07C51/43 ,  C07C51/48 ,  C07C59/265

Abstract: The invention provides a process for the recovery of citric acid from an aqueous solution feed stream originating in fermentation of carbohydrates and utilizing an amine solvent extraction step for separation of impurities comprising: subjecting said aqueous solution feed stream A to a treatment for partial recovery of citric acid, wherein said treatment is other than amine solvent extraction, to form a first portion of purified citric acid B and a secondary feed stream F; subjecting at least a portion G of said secondary feed stream F to a treatment consisting of amine solvent extraction to form a second portion of purified citric acid solution and to reject substantial of impurities initially present in said portion of said secondary feed stream; subjecting said second portion of purified citric acid solution to crystallization; and recycling mother liquor from said crystallization.

Abstract translation: 本发明提供从源自碳水化合物发酵的水溶液进料流中回收柠檬酸的方法，并利用胺溶剂提取步骤分离杂质，所述方法包括：使所述水溶液进料流A经受部分回收柠檬酸 酸，其中所述处理不是胺溶剂萃取，以形成纯化柠檬酸B的第一部分和第二进料流F; 使至少部分G的所述二级原料流F经受由胺溶剂萃取组成的处理以形成第二部分纯化的柠檬酸溶液并且除去最初存在于所述二级原料流的所述部分中的大量杂质; 使所述第二部分纯化的柠檬酸溶液结晶; 并从所述结晶回收母液。

公开(公告)号：EP1470099A4

公开(公告)日：2006-04-12

申请号：EP02797276

申请日：2002-12-11

Applicant: STALEY MFG CO A E

Inventor： COCKREM MICHAEL CHARLES MILNER ,  KOVACS ISTVAN ,  MOHAMEDNUR IDRIS ,  HEIDEL DAVID ,  BANIEL AVRAHAM M

IPC: C07C51/48 ,  C07C59/08

CPC classification number: C07C51/48 ,  C07C59/08

Abstract: A process is disclosed for purifying an aqueous feed stream (10) comtaining a product organic acid and a strong contaminant such as another organic acid. The molar concentration of the organic acid in the feed stream (10) is at least 20 times greater than that of the contaminant. The feed stream (10) is contacted with an immiscible basic extractant (18) that has a greater affinity for the contaminant and which complexes with the contaminant and some of the organic acid. The complexed extractant is separated from the aqueous stream (10), so as to produce a first effluent stream (20) comprising product organic acid. The complexed extractant is contacted with a displacing acid, for which the extractant has a greater affinity than contaminant or extractant. As a result, a second effluent stream (28) comprising organic acid and a third effluent stream (30) are produced.

公开(公告)号：BRPI0409540A

公开(公告)日：2006-04-18

申请号：BRPI0409540

申请日：2004-03-03

Applicant: STALEY MFG CO A E

Inventor： BANIEL AVRAHAM ,  VITNER ASHER ,  GONEN DAVID ,  HEIDEL DAVID

IPC: C07C51/43 ,  C07C51/48

Abstract: The invention provides a process for the recovery of citric acid from an aqueous solution feed stream originating in fermentation of carbohydrates and utilizing an amine solvent extraction step for separation of impurities comprising: subjecting said aqueous solution feed stream A to a treatment for partial recovery of citric acid, wherein said treatment is other than amine solvent extraction, to form a first portion of purified citric acid B and a secondary feed stream F; subjecting at least a portion G of said secondary feed stream F to a treatment consisting of amine solvent extraction to form a second portion of purified citric acid solution and to reject substantial of impurities initially present in said portion of said secondary feed stream; subjecting said second portion of purified citric acid solution to crystallization; and recycling mother liquor from said crystallization.

公开(公告)号：AU2002362143A1

公开(公告)日：2003-07-30

申请号：AU2002362143

申请日：2002-12-11

Applicant: STALEY MFG CO A E

Inventor： MOHAMEDNUR IDRIS ,  HEIDEL DAVID ,  BANIEL AVRAHAM M ,  COCKREM MICHAEL CHARLES MILNER ,  KOVACS ISTVAN

IPC: C07C51/48 ,  C07C59/08

公开(公告)号：BR0215459A

公开(公告)日：2005-04-05

申请号：BR0215459

申请日：2002-12-11

Applicant: STALEY MFG CO A E

Inventor： COCKREM MICHAEL CHARLES MILNER ,  KOVACS ISTVAN ,  MOHAMEDNUR IDRIS ,  HEIDEL DAVID ,  BANIEL AVRAHAM M

IPC: C07C51/48 ,  C07C59/08

公开(公告)号：CA2470978A1

公开(公告)日：2003-07-24

申请号：CA2470978

申请日：2002-12-11

Applicant: STALEY MFG CO A E

Inventor： HEIDEL DAVID ,  MOHAMEDNUR IDRIS ,  COCKREM MICHAEL CHARLES MILNER ,  KOVACS ISTVAN ,  BANIEL AVRAHAM M

IPC: C07C51/48 ,  C07C59/08

Abstract: A process is disclosed for purifying an aqueous feed stream (10) comtaining a product organic acid and a strong contaminant such as another organic acid. The molar concentration of the organic acid in the feed stream (10) is at least 20 times greater than that of the contaminant. The feed stream (10) is contacted with an immiscible basic extractant (18) that has a greater affini ty for the contaminant and which complexes with the contaminant and some of the organic acid. The complexed extractant is separated from the aqueous stream (10), so as to produce a first effluent stream (20) comprising product organ ic acid. The complexed extractant is contacted with a displacing acid, for whic h the extractant has a greater affinity than contaminant or extractant. As a result, a second effluent stream (28) comprising organic acid and a third effluent stream (30) are produced.