发明名称 |
PROCESS FOR THE RECOVERY OF CITRIC ACID |
摘要 |
The invention provides a process for the recovery of citric acid from an aqueous solution feed stream originating in germination 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.
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申请公布号 |
US2008161601(A1) |
申请公布日期 |
2008.07.03 |
申请号 |
US20080049994 |
申请日期 |
2008.03.17 |
申请人 |
A.E. STALEY MANUFACTURING COMPANY |
发明人 |
BANIEL AVRAHAM;VITNER ASHER;GONEN DAVID;HEIDEL DAVID |
分类号 |
C07C51/00;C07C51/43;C07C51/48 |
主分类号 |
C07C51/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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