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    • 5. 发明公开
    • Method for processing magnesium chloride solutions
    • Verfahren zur Verarbeitung vonMagnesiumchlorlösungen
    • EP2821368A1
    • 2015-01-07
    • EP13174834.5
    • 2013-07-03
    • PURAC Biochem BV
    • de Vries, Johannes JeichinusFrediansyah, Raymonde Haan, André Banier
    • C01F5/10C12P7/40C01B13/18C01F5/06
    • C12P3/00C01B7/01C01B7/035C01F5/10C01F5/30C01P2006/80C07C51/02C12P7/40C07C59/08C07C55/10C07C53/122C07C59/01C07C59/265C07C57/15C07C57/13
    • The invention pertains to a method for processing MgCl2 solutions comprising the steps of
      - providing an aqueous solution comprising 5-25 wt.% of MgCl2 and optionally organic contaminants to an evaporation step, wherein water and, where present, organic components are evaporated,
      - withdrawing an aqueous solution with a MgCl2 concentration of 25-35 wt.% from an evaporation step and providing it to a preconcentrator where it is contacted with a HCl containing gas stream with a temperature of at least 300°C,
      - providing an aqueous solution with a MgCl2 concentration of 35-45 wt.% resulting from the preconcentrator to a thermohydrolysis reactor, the reactor being at a temperature of at least 300°C,
      - withdrawing MgO from the thermohydrolysis reactor in solid form, and withdrawing a HCl containing gas stream from the thermohydrolysis reactor, said HCl-containing gas stream having a temperature of at least 300°C,
      - providing the HCl-containing gas stream with a temperature of at least 300°C to the preconcentrator,
      - withdrawing a HCl-containing gas stream with a temperature of at most 150°C from the preconcentrator.
      It has been found that the process according to the invention can be integrated into a fermentation process in such a manner that a stable and efficient process is obtained.
    • 本发明涉及一种处理MgCl 2溶液的方法,包括以下步骤:提供包含5-25重量%的MgCl 2和任选的有机污染物的水溶液至蒸发步骤,其中水和(如果有的话)有机组分被蒸发, 从蒸发步骤中取出MgCl 2浓度为25-35重量%的水溶液,并将其提供到预浓缩器中,在预浓缩器中,其与含有至少300℃温度的含HCl气体物流接触,提供水溶液 其中MgCl 2浓度为35-45重量%,由预浓缩器产生于热水解反应器,反应器处于至少300℃的温度, - 从固体形式的热水解反应器中取出MgO,并且将含HCl的气体 来自热水解反应器的流,所述含HCl的气流具有至少300℃的温度, - 提供具有至少30℃的温度的含HCl气流 0°C至预浓缩器, - 从预浓缩器中取出温度至多为150°C的含HCl气体流。 已经发现,根据本发明的方法可以以获得稳定和有效的方法的方式整合到发酵过程中。