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    • 1. 发明授权
    • Process for producing sodium bicarbonate
    • 生产碳酸氢钠的方法
    • US09422166B2
    • 2016-08-23
    • US12811663
    • 2009-01-06
    • Jean-Paul DetournayFrancis M. Coustry
    • Jean-Paul DetournayFrancis M. Coustry
    • C01D7/32C01D7/12B01D61/42C01D1/38
    • C01D7/126B01D61/422C01D1/38C01D7/32
    • In a process to produce sodium carbonate, a first production solution comprising sodium carbonate is introduced into less basic compartments of an electrodialyzer comprising alternating less basic and more basic adjacent compartments separated from each other by cationic membranes, the more basic compartments being delimited by anionic faces of bipolar membranes on one side and by the cationic membranes on the other side; a second production solution comprising sodium carbonate is introduced into the more basic compartments of the electrodialyzer; a solution comprising sodium hydroxide is produced into the more basic compartments by combination of sodium ions flux sodium ions crossing the cationic membrane and hydroxyl ions flux crossing the anionic face of the bipolar membranes, and is then extracted from the electrodialyzer to be used as a reaction solution; and the reaction solution is reacted with sodium bicarbonate in order to form a produced solution comprising sodium carbonate.
    • 在生产碳酸钠的方法中,将包含碳酸钠的第一制备溶液引入电解槽的较少碱性室中,其包含由阳离子膜彼此分离的交替的较少碱性和更碱性的相邻隔室,更基本的隔室由阴离子面 双极膜在一侧和另一侧的阳离子膜; 将包含碳酸钠的第二制备溶液引入电渗析器的更碱性的隔室中; 将包含氢氧化钠的溶液通过与阳离子膜交叉的钠离子通量钠离子与穿过双极性膜的阴离子面的羟基离子通量的组合而形成到更碱性的隔室中,然后从电渗析器中提取以用作反应 解; 并将反应溶液与碳酸氢钠反应,以形成包含碳酸钠的生产溶液。
    • 8. 发明授权
    • Process for the purification from heavy metals of vinyl chloride polymers
    • 用于从氯乙烯聚合物的重金属中纯化的方法
    • US08053550B2
    • 2011-11-08
    • US11719825
    • 2005-11-21
    • Eric FassiauMurielle Manin
    • Eric FassiauMurielle Manin
    • C08C1/14
    • C08J11/08C08J2327/04Y02W30/701
    • Process for the purification of a vinyl chloride polymer (PVC) comprising at least one compound of a heavy metal, according to which: (a) the PVC is dissolved in a water-miscible polar organic solvent; (b) an aqueous solution comprising a reagent, which is either a base capable of reacting with the compound of the heavy metal (R1) or a dispersing agent capable of stabilizing the said compound (R2), is added to the organic solution, the water being introduced in an amount (Q) such that it brings about the formation of a two-phase medium, the continuous phase of which is the organic phase; (c) the two-phase medium is subjected to stirring for a time sufficient for the reagent to be able to interact with (exert its effect on) the compound of the heavy metal; (d) the precipitation of the PVC out of this two-phase medium is brought about.
    • 纯化含有至少一种重金属化合物的氯乙烯聚合物(PVC)的方法,其中:(a)将PVC溶于水混溶的极性有机溶剂中; (b)将含有可与重金属化合物(R1)反应的碱或能稳定所述化合物(R2)的分散剂)的试剂的水溶液加入到有机溶液中, 以Q(Q)的形式引入水,使得其形成两相介质,其连续相为有机相; (c)使两相介质经受搅拌足以使试剂与重金属化合物相互作用(发挥其作用)的时间; (d)出现PVC从这种两相介质中的沉淀。