发明名称 |
Process for manufacturing lactic acid |
摘要 |
<p>The present invention discloses a process for the preparation of lactic acid comprising the steps of: a) providing an aqueous medium comprising magnesium lactate; b) adding to the aqueous medium comprising magnesium lactate a monovalent base to form an aqueous medium comprising a water soluble monovalent lactate salt and a solid magnesium base; c) separating the magnesium base from the aqueous medium comprising the water soluble monovalent lactate salt; d) adjusting the concentration of the monovalent lactate salt in the aqueous medium to a value between 10 and 30 wt.%, e) subjecting the aqueous medium comprising the monovalent lactate salt to water-splitting electrodialysis, to produce a first solution comprising monovalent base and a second solution comprising lactic acid and monovalent lactate salt, the electrodialysis being carried out to a partial conversion of 40 to 98 mole%; f) separating the second solution comprising lactic acid and monovalent lactate salt into lactic acid and a solution comprising the monovalent lactate salt by vapour-liquid separation; g) recycling the solution of step f) comprising the monovalent lactate salt to step d).</p> |
申请公布号 |
AU2011212354(B2) |
申请公布日期 |
2015.07.09 |
申请号 |
AU20110212354 |
申请日期 |
2011.02.08 |
申请人 |
PURAC BIOCHEM BV |
发明人 |
BAETS, PETER JOHANNES MARIE;GROOT, WILLEM JACOB |
分类号 |
C12P7/56;C07C51/41;C07C51/44;C07C51/48;C07C59/08 |
主分类号 |
C12P7/56 |
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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