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    PROCESS FOR THE MANUFACTURE OF SODIUM CARBONATE
    1.
    发明公开
    PROCESS FOR THE MANUFACTURE OF SODIUM CARBONATE 审中-公开
    用于生产钠

    公开(公告)号：EP1628915A1

    公开(公告)日：2006-03-01

    申请号：EP04741604.5

    申请日：2004-05-19

    申请人： SOLVAY (Société Anonyme)

    发明人： DEMILIE, Paul

    IPC分类号： C01D7/14 ,  C01D7/12

    CPC分类号： C01D7/126 ,  C01D7/12 ,  C01D7/14

    摘要： Process for the manufacture of sodium carbonate crystals comprising: the addition of solid sodium carbonate (1) to an aqueous solution coniprising sodium bicarbonate and sodium carbonate; the crystallization and the separation of sodium sesquicarbonate crystals; (B, C) the crystallization of sodium carbonate crystals, (E) the amount of sodium carbonate added being adjusted so that the crystallization of sesquicarbonate crystals can be carried out without preliminary evaporation of the aqueous suspension.

    Production of sodium bicarbonate by reversion of NaHC03-containing double salt
    2.
    发明公开
    Production of sodium bicarbonate by reversion of NaHC03-containing double salt 失效
    一种用于通过的NaHCO 3的含有复盐的转化生产碳酸氢钠处理。

    公开(公告)号：EP0135323A2

    公开(公告)日：1985-03-27

    申请号：EP84305201.0

    申请日：1984-07-31

    申请人： FMC Corporation

    发明人： Copenhafer, William Clark ,  Pfeffer III, Henry Albert ,  Rauh, Francis

    IPC分类号： C01D7/14

    CPC分类号： C01D7/10

    摘要： Sodium bicarbonate is produced by introducing solid sodium sesquicarbonate and/or Wegscheider's salt into a reversion slurry, saturated with respect to bicarbonate and containing at least 10 wt. % solids, to effect rapid and complete conversion of the feed solids to crystalline sodium bicarbonate which is recovered from the slurry. Carbon dioxide is introduced into the reversion liquor to maintain its composition at a relatively constant value, preferably in a region of the Na 2 C0 3 -NaHC0 3- H 2 0 phase diagram that minimizes the equilibrium partial pressure of CO 2 vapor above such liquor.

    摘要翻译： 碳酸氢钠通过引入固体倍半碳酸钠和/或Wegscheider的盐成反转浆液，相对于饱和碳酸氢盐和含有至少10％（重量）生产的。固体，以实现进料固体的快速和完全转化为结晶碳酸氢钠所有这些是 从浆料中回收。 二氧化碳被引入到返液维持其组合物在相对恒定的数值，最好是在碳酸钠 - 碳酸氢钠-H2O相图的区域做最小化CO2蒸气的上述寻求酒的平衡分压。