Process for the recovery of lactic acid
    4.
    发明授权
    Process for the recovery of lactic acid 失效
    回收乳酸的方法

    公开(公告)号:US06667417B2

    公开(公告)日:2003-12-23

    申请号:US09367618

    申请日:1999-11-19

    IPC分类号: C07C5142

    摘要: The invention provides a process for producing lactic acid from a medium containing an alkaline earth-metal salt of lactic acid, comprising (a) reacting a conjugated base of an alkali metal from a subsequent step with the medium to form a water soluble alkali metal lactate salt and a basic compound of the alkaline earth metal; (b) separating the water soluble alkali metal lactate salt and the basic compound of the alkaline earth-metal; (c) splitting the water soluble alkali metal lactate to form a conjugated alkali metal base and a lactic acid product, which product is selected from the group consisting of lactic acid; and (d) separating the conjugated alkali metal base and the lactic acid product; (e) reusing the separated conjugated alkali metal base or the product in the step (a); and (f) reusing the basic compound of the alkaline earth metal, separated in step (b) to form an alkaline earth metal salt of lactic acid.

    摘要翻译: 本发明提供了一种由含有乳酸碱土金属盐的培养基生产乳酸的方法,包括(a)将来自后续步骤的碱金属的共轭碱与培养基反应,形成水溶性碱金属乳酸盐 盐和碱土金属的碱性化合物; (b)分离水溶性碱金属乳酸盐和碱土金属的碱性化合物; (c)分解水溶性碱金属乳酸盐以形成共轭碱金属碱和乳酸产物,该产物选自乳酸; 和(d)分离共轭碱金属碱和乳酸产物; (e)在步骤(a)中重新使用分离的共轭碱金属碱或产物; 和(f)重复使用在步骤(b)中分离的碱土金属的碱性化合物以形成乳酸的碱土金属盐。