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    • 8. 发明授权
    • Electrolytic cell and method for the production of acid water
    • 电解池及酸水生产方法
    • US6126796A
    • 2000-10-03
    • US81059
    • 1998-05-19
    • Takayuki ShimamuneMasashi TanakaYasuo NakajimaYoshinori Nishiki
    • Takayuki ShimamuneMasashi TanakaYasuo NakajimaYoshinori Nishiki
    • C02F1/46C02F1/461C02F1/467
    • C02F1/4674C02F1/4618C02F2001/46133C02F2001/46161C02F2001/46185C02F2201/46115C02F2201/4618C02F2201/46185C02F2201/46195C02F2209/04C02F2209/06C02F2303/04
    • An electrolytic cell for the production of acid water which performs simple operation to produce acid water without complicated control over the concentration of hydrochloric acid to be added or precipitation of alkaline earth metal salts, which are disadvantages of the prior art electrolysis for the production of acid water. An electrolytic cell for the production of acid water, which comprises a power supply for applying a voltage across an anode chamber and a cathode chamber partitioned by an ion-exchange membrane. The anode in the anode chamber is disposed in close contact with the ion-exchange membrane. The electrolytic cell further comprises means for supplying an aqueous solution of hydrochloric acid and water to the cathode chamber and the anode chamber, respectively. Hydrochloric acid is not directly added to the anode chamber but indirectly added to the anode chamber by diffusing through the ion-exchange membrane. In this manner, hydrochloric acid is uniformly dispersed into the anode chamber by diffusing through the ion-exchange membrane. Thus, the need for controlling concentration is eliminated. Furthermore, because both the catholyte and anolyte are kept acidic, no precipitation of metal salts occurs.
    • 一种用于生产酸水的电解池,其操作简便,不需要对添加的盐酸的浓度进行复杂控制,或者沉淀碱土金属盐,这是现有技术电解生产酸的缺点 水。 一种用于生产酸水的电解池,包括用于施加跨越阳极室的电压的电源和由离子交换膜分隔的阴极室。 阳极室中的阳极设置成与离子交换膜紧密接触。 电解槽还包括用于将盐酸和水的水溶液分别供应到阴极室和阳极室的装置。 盐酸不直接添加到阳极室,而是通过离子交换膜扩散而间接添加到阳极室。 以这种方式,盐酸通过离子交换膜扩散而均匀地分散到阳极室中。 因此,消除了控制浓度的需要。 此外,由于阴极电解液和阳极电解液都保持酸性,因此不会发生金属盐沉淀。
    • 9. 发明授权
    • Method for electrolyzing aqueous solution of alkali chloride
    • 电解碱金属氯化物水溶液的方法
    • US5466347A
    • 1995-11-14
    • US162761
    • 1993-12-07
    • Takayuki ShimamuneYasuo Nakajima
    • Takayuki ShimamuneYasuo Nakajima
    • C25B1/26C25B1/46C25B15/08
    • C25B1/26C25B1/46
    • The present invention is intended to prevent the formation of impurities such as chlorate in electrolysis using the ion exchange membrane method, without resorting to the addition of hydrochloric acid to counter the migration of alkali hydroxide from the cathode compartment to the anode compartment. The method of the present invention includes feeding a portion of an aqueous solution of an alkali chloride (as the raw material) into an auxiliary electrolytic cell of the cation exchange membrane type in which the anode is a hydrogen gas electrode, thereby effecting electrolysis to generate hydrochloric acid in the anode compartment, and then feeding the hydrochloric acid-containing aqueous solution of alkali chloride into the main electrolytic cell, thereby neutralizing the alkali hydroxide which migrates from the cathode compartment. This method inherently forms hydrochloric acid in the system, obviating the need for having an additional facility for synthesis of hydrochloric acid, thus permitting the efficient production of alkali hydroxide and chlorine without the addition of hydrochloric acid.
    • 本发明是为了防止使用离子交换膜法在电解中形成杂质如氯酸盐,而不需要加入盐酸以抵抗碱金属氢氧化物从阴极室向阳极室的迁移。 本发明的方法包括将碱性氯化物(作为原料)的水溶液的一部分供给到阳极为氢气电极的阳离子交换膜型的辅助电解槽中,进行电解以产生 盐酸在阳极室中,然后将含盐酸的氯化碱水溶液进料到主电解槽中,从而中和从阴极室迁移的碱金属氢氧化物。 该方法固有地在体系中形成盐酸,避免了需要另外的合成盐酸的设备,从而允许在不添加盐酸的情况下有效地生产碱金属氢氧化物和氯。