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公开(公告)号：US3933603A
公开(公告)日：1976-01-20
申请号：US463366
申请日：1974-04-23
申请人： Yoshio Ishida , Hiroshi Ono , Reiji Takemura
发明人： Yoshio Ishida , Hiroshi Ono , Reiji Takemura
CPC分类号： C25B1/46 , C04B12/04 , C04B18/021
摘要： Alkali metal hydroxide is produced by electrolysis of alkali metal chloride according to an improved diaphragm process wherein plural cationic ion-exchange membranes are used to divide an electrolytic cell into an anode compartment, at least one middle compartment and a cathode compartment. The ion-exchange membrane confronting anode is preferably substantially resistant to anode reaction products such as chlorine or chlorates. Alkali formed by electrolysis is recovered from cathode compartment or alternatively a portion thereof may be taken out from middle compartments at various concentrations. Alkali metal hydroxide can be produced in high purity and high concentration with excellent efficiency.
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2.发明授权
公开(公告)号：US4276130A
公开(公告)日：1981-06-30
申请号：US42304
申请日：1979-05-25
申请人： Maomi Seko , Shinsaku Ogawa , Reiji Takemura
发明人： Maomi Seko , Shinsaku Ogawa , Reiji Takemura
CPC分类号： C25B1/46
摘要： High purity aqueous alkali hydroxide solutions containing predetermined, low concentrations of alkali metal halide are obtained in the anode compartment of an electrolytic cell using a cationic ion exchange membrane by conducting the electrolysis under controlled conditions such that the difference between the concentration of alkali metal halide in the anode compartment and the limiting concentration of alkali metal halide in the anode compartment is within a defined range.
摘要翻译： 在电解槽的阳极室中，使用阳离子交换膜，在受控条件下进行电解，得到含有预先确定的低浓度碱金属卤化物的高纯度碱金属氢氧化物溶液，使碱金属卤化物浓度之间的差异 阳极室和阳极室中碱金属卤化物的极限浓度在规定的范围内。
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公开(公告)号：US4643818A
公开(公告)日：1987-02-17
申请号：US760897
申请日：1985-07-31
申请人： Maomi Seko , Reiji Takemura , Hideharu Miyamori
发明人： Maomi Seko , Reiji Takemura , Hideharu Miyamori
摘要： A multi-cell electrolyzer comprising a plurality of unit cells, each of which is composed of an anode chamber containing an anode and a cathode chamber containing a cathode and a cation exchange membrane for partitioning said unit cell into said anode chamber and said cathode chamber, and each of which is adapted to have an internal pressure maintained at a level higher than the atmospheric pressure in operation of the electrolyzer, said plurality of unit cells being arranged in series and adapted to be energized through a plurality of current lead plates, and rigid multi-contact electrically conductive means provided between the adjacent unit cells and/or between each current lead plate and the unit cell adjacent thereto, thereby establishing electrical connection between the adjacent unit cells and/or between each current lead plate and the unit cell adjacent thereto. With such a structure, not only is the electrical contact resistance between the adjacent unit cells and between each current lead plate and the unit cell adjacent thereto extremely reduced but also the current density in the unit cells is rendered uniform. Further, the present multi-cell electrolyzer can be easily constructed either in a bipolar form or in a monopolar form using unit cells common to both of the bipolar and monopolar forms.
摘要翻译： 一种多单元电解槽，包括多个单元电池，每个单元电池由包含阳极的阳极室和含有阴极的阳极室和用于将所述单电池分隔成所述阳极室和所述阴极室的阳离子交换膜组成， 并且其中的每一个适于在电解槽的操作中将内部压力维持在高于大气压力的水平面上，所述多个单元电池串联布置并适于通过多个电流引线板通电，并且刚性 设置在相邻单元电池之间和/或每个电流引线板和与其相邻的单元电池之间的多触点导电装置，从而在相邻单元电池之间和/或每个电流引线板与与其相邻的单元电池之间建立电连接 。 通过这样的结构，不仅相邻单位电池之间和每个电流引线板与与其相邻的单位电池之间的电接触电阻极大地降低，而且单元电池中的电流密度也是均匀的。 此外，本发明的多单元电解器可以容易地以双极形式或单极形式使用双极和单极形式共同的单元电池。
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公开(公告)号：US4405418A
公开(公告)日：1983-09-20
申请号：US240226
申请日：1981-03-03
申请人： Reiji Takemura
发明人： Reiji Takemura
摘要： A process for the production of sodium chlorate comprising electrolyzing an aqueous sodium chloride solution in a diaphragmless sodium chlorate cell, characterized in that an aqueous sodium chloride solution containing, as impurities, calcium, magnesium, barium and the like is contacted with a chelating ion exchange resin to remove the impurities and the resulting saline solution is supplied into a diaphragmless sodium chlorate cell, thereby enabling sodium chlorate to be produced at a stable electrolytic voltage. Further, there is provided a process for the production of sodium chlorate using a combination of a sodium chlorate cell and a cation exchange membrane process type chlorine-alkali cell, characterized in that a weak saline solution taken out of an anode chamber of a cation exchange membrane process type chlorine-alkali cell is supplied with sodium chloride to form an aqueous sodium chloride solution, which is subsequently contacted with a chelating ion exchange resin to remove calcium, magnesium, barium and the like contained as impurities in said solution, and at least part of the resulting purified saline solution is supplied into a sodium chlorate cell, whereby sodium chlorate formed as a by-product in the chlorine-alkali cell can be effectively recovered and the elevation of the electrolytic voltage of the sodium chlorate cell with the lapse of time can be well prevented.
摘要翻译： 一种生产氯酸钠的方法，包括在无氯酸钠电池中电解氯化钠水溶液，其特征在于将含有钙，镁，钡等杂质的氯化钠水溶液与螯合离子交换剂 树脂以除去杂质，并将所得的盐水溶液供应到无隔膜氯酸钠电池中，从而使得能够以稳定的电解电压产生氯酸钠。 此外，提供了使用氯酸钠电池和阳离子交换膜工艺型氯碱电池的组合生产氯酸钠的方法，其特征在于从阳离子交换器的阳极室取出的弱盐水溶液 用氯化钠供给膜工艺型氯碱池，形成氯化钠水溶液，随后与螯合离子交换树脂接触以除去所述溶液中作为杂质含有的钙，镁，钡等，至少 将得到的纯化盐水溶液的一部分供给到氯酸钠电池中，由此可以有效地回收在氯碱池中作为副产物形成的氯酸钠，随着氯酸钠电池的电解电压升高 时间可以很好地防止。
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5.发明授权
公开(公告)号：US4209369A
公开(公告)日：1980-06-24
申请号：US969272
申请日：1978-12-14
申请人： Maomi Seko , Shinsaku Ogawa , Reiji Takemura
发明人： Maomi Seko , Shinsaku Ogawa , Reiji Takemura
CPC分类号： C25B1/46 , B01D1/26 , C25B15/08 , Y02P20/129
摘要： In a process for electrolysis of sodium chloride in an electrolytic cell divided into the anode chamber and the cathode chamber by a cation exchange membrane, well brine is used as the starting material for the electrolysis and the dilute aqueous sodium chloride solution formed as the result of the electrolysis is subjected to concentration for re-use as the starting material.
摘要翻译： 在通过阳离子交换膜分解成阳极室和阴极室的电解池中电解氯化钠的方法中，使用盐水作为电解的起始原料，并且作为结果形成的稀氯酸钠水溶液 将电解作为起始原料进行浓缩再利用。
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