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    Process for electrolytic production of alkali metal chlorate and auxiliary chemicals
    2.
    发明公开
    Process for electrolytic production of alkali metal chlorate and auxiliary chemicals 失效
    Verfahren zur elektrolytischen Herstellung von Alkalimetall-Chlorat und chemische Hilfsverbindungen。

    公开(公告)号：EP0498484A1

    公开(公告)日：1992-08-12

    申请号：EP92200201.9

    申请日：1992-01-24

    申请人： EKA NOBEL AB

    发明人： Wanngard, Johan ,  Carlsson, Arne ,  Bäckström, Jan Erik

    IPC分类号： C25B1/26

    CPC分类号： C25B1/265

    摘要： The present invention relates to a process to limit the content of impurities in the production of alkali metal chlorate, by integrating the production of chlorate with the production of chlorine and alkali metal hydroxide, which auxiliary chemicals are used in the chlorate process. The alkali metal chlorate is produced by electrolysis of a purified electrolyte containing alkali metal chloride, alkalization of the chlorate electrolyte obtained and precipitation of the chlorate formed by evaporation of the chlorate electrolyte. The very pure water separated in the crystallizer and alkali metal chloride is used in a membrane or diaphragm cell in the production of alkali metal hydroxide, which hydroxide is used in the production of alkali metal chlorate. Either pure chlorine or hydrogen chloride absorbed in water can be used in acidification, at which hydrogen chloride is produced from chlorine and hydrogen generated in the process.

    摘要翻译： 本发明涉及通过将氯酸盐的生产与氯和碱金属氢氧化物的生产相结合来限制生产碱金属氯酸盐中的杂质含量的方法，该辅助化学品用于氯酸盐方法。 碱金属氯酸盐通过电解含有碱金属氯化物的纯化电解质，获得的氯酸盐电解质的碱化和通过蒸发氯酸盐电解质形成的氯酸盐的沉淀来生产。 在结晶器和碱金属氯化物中分离的非常纯净的水被用于生产碱金属氢氧化物的膜或隔膜电池中，氢氧化物用于生产碱金属氯酸盐。 吸收在水中的纯氯或氯化氢可以用于酸化，在该酸化过程中产生氯和氯。