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    • 6. 发明专利
    • Method for electrolyzing salt by ion exchange membrane method
    • 通过离子交换膜法电解盐的方法
    • JPS59162285A
    • 1984-09-13
    • JP3462583
    • 1983-03-04
    • Asahi Chem Ind Co Ltd
    • SHIRAKI HIROYUKI
    • C01D3/14C25B1/46C25B15/08
    • C25B1/46C01D3/145
    • PURPOSE: To stabilize current efficiency by feeding an aqueous soln. of salt to the anode chamber of an electrolytic cell divided with an ion exchange membrane after removing iodine compounds to eliminate unfavorable influence on electrolysis.
      CONSTITUTION: Rock salt contg. iodine compounds is fed to a salt dissolving vessel 12 and dissolved to prepare a satd. aqueous soln. of salt. The soln. is passed through a reaction vessel 14, a filter 19 and a column 20 packed with a chelate resin to remove dissolved ions of Ca, Mg and Fe to ≤about 0.1ppm. The pH of the resulting soln. is adjusted to ≤about 2 by adding sodium hypochlorite 21 and hydrochloric acid 22, and the soln. is passed through a column 23 packed with an anion exchange resin to remove iodine and iodine ions to ≤10ppm. The purified nearly-satd. aqueous soln. of NaCl is supplied to an anolyte tank 7, and it is fed to the anode chamber 6 of an electrolytic cell 1. By feeding the purified soln., a reduction of current efficiency and an increase of voltage can be avoided, and stable electrolysis can be carried out.
      COPYRIGHT: (C)1984,JPO&Japio
    • 目的:通过喂食水溶液来稳定电流效率。 在除去碘化合物之后,将电解槽与阳离子室分离成离子交换膜,以消除对电解的不利影响。 构成:岩盐 将碘化合物加入到盐溶解容器12中并溶解以制备饱和盐。 水溶胶 盐。 索恩 通过反应容器14,过滤器19和填充有螯合树脂的柱20,以将Ca,Mg和Fe的溶解离子除去至约0.1ppm。 所得溶液的pH值。 通过加入次氯酸钠21和盐酸22以及溶剂将其调节至<=约2。 通过填充有阴离子交换树脂的柱23以除去碘和碘离子至<= 10ppm。 纯净的几乎饱 水溶胶 的NaCl被供给到阳极电解液罐7,并且被供给到电解槽1的阳极室6.通过供给纯化的溶胶,可以避免电流效率的降低和电压的上升,并且稳定的电解可以 要进行