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1.发明授权公开(公告)号：US06773575B2
公开(公告)日：2004-08-10
申请号：US10103034
申请日：2002-03-22
申请人： Yasuo Nakajima , Yoshinori Nishiki , Genzo Yamane , Masaharu Uno , Akira Katsumoto , Kunio Nishimura
发明人： Yasuo Nakajima , Yoshinori Nishiki , Genzo Yamane , Masaharu Uno , Akira Katsumoto , Kunio Nishimura
IPC分类号： C02F1461
CPC分类号： A61L2/186 , A61L2202/122 , C02F1/46109 , C02F1/4672 , C02F1/4674 , C02F1/722 , C02F2103/08 , C25B1/26 , C25B1/30
摘要： An electrolytic cell and process for the simultaneous production of hydrogen peroxide and hypochlorous ion. The electrolytic cell has an anode chamber housing an insoluble anode capable of oxidizing halide ion, a cathode chamber housing a gas diffusion cathode capable of oxidizing an oxygen-containing gas to produce hydrogen peroxide, a membrane separating the anode and cathode chambers, and means for supplying water containing halide ion to the anode chamber and an oxygen-containing gas and an electrolyte to the cathode chamber, whereby hypohalide and hydrogen peroxide are produced in the anode chamber and the cathode chamber, respectively. Also disclosed is a process for treating water using the electrolytic cell.
摘要翻译： 一种电解池和同时生产过氧化氢和次氯酸根离子的方法。 电解槽具有容纳能够氧化卤素离子的不溶性阳极的阳极室，容纳能够氧化含氧气体以产生过氧化氢的气体扩散阴极的阴极室，分离阳极室和阴极室的膜，以及用于 向阳极室供给含有卤离子的水，向阴极室供给含氧气体和电解质，由此在阳极室和阴极室分别产生次卤化物和过氧化氢。 还公开了使用电解槽处理水的方法。
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公开(公告)号：US06761815B2
公开(公告)日：2004-07-13
申请号：US10095482
申请日：2002-03-13
IPC分类号： C25B100
CPC分类号： C25B1/30
摘要： A process for the production of hydrogen peroxide solution from seawater as a starting material substantially free of effective chlorine or organic halogen compounds. An electric current is passed through an insoluble anode and an oxygen gas diffusion cathode while keeping the halide ion concentration of anolyte supplied to the anode chamber to a level not greater than 1 g/l. Hydrogen peroxide thus generated dissolves in the catholyte. Anodic oxidation of halide ions is suppressed, to thereby inhibit the production of effective chlorine.
摘要翻译： 一种从海水中生产过氧化氢溶液作为起始原料基本上不含有效氯或有机卤素化合物的方法。 将电流通过不溶性阳极和氧气扩散阴极，同时将供给阳极室的阳极电解液的卤离子浓度保持在不高于1g / l的水平。 因此产生的过氧化氢溶解在阴极电解液中。 卤离子的阳极氧化被抑制，从而抑制有效氯的产生。
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公开(公告)号：US6159349A
公开(公告)日：2000-12-12
申请号：US185034
申请日：1998-11-03
申请人： Shuhei Wakita , Yoshinori Nishiki , Takayuki Shimamune , Yasuo Nakajima , Masaaki Katoh , Yoshiyuki Kawaguchi , Takahiro Ashida , Masaharu Uno
发明人： Shuhei Wakita , Yoshinori Nishiki , Takayuki Shimamune , Yasuo Nakajima , Masaaki Katoh , Yoshiyuki Kawaguchi , Takahiro Ashida , Masaharu Uno
CPC分类号： C02F1/4672 , C02F1/46109 , C02F1/722 , C02F2001/46142 , C02F2001/46166 , C02F2303/04
摘要： An electrolytic cell for producing a brine containing hydrogen peroxide is disclosed. Units for hydrogen peroxide production 3 and units for water electrolysis 2 are alternately arranged in the same electrolytic cell 1. Electrolysis is conducted while supplying hydrogen gas and oxygen gas generating in the respective water electrolysis units to a gas diffusion anode 11 and a gas diffusion cathode 13 of each unit for hydrogen peroxide production, to thereby obtain a brine containing hydrogen peroxide in a high concentration. Furthermore, because the anode of the hydrogen peroxide production units is a hydrogen gas diffusion anode having a reduced oxidizing ability, halogen ions contained in the seawater do not yield harmful halogenated organic substances.
摘要翻译： 公开了一种用于生产含有过氧化氢的盐水的电解池。 用于过氧化氢生产的单元3和水电解单元2交替地布置在同一电解槽1中。在将各个水电解单元中产生的氢气和氧气供应到气体扩散阳极11和气体扩散阴极 13单位用于过氧化氢生产，从而获得含有高浓度过氧化氢的盐水。 此外，由于过氧化氢生产单元的阳极是具有降低的氧化能力的氢气扩散阳极，所以在海水中所含的卤离子不产生有害的卤化有机物质。
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4.发明授权Electrolytic cell and processes for producing alkali hydroxide and hydrogen peroxide 失效电解池和碱氢氧化物和过氧化氢的制备方法
公开(公告)号：US5437771A
公开(公告)日：1995-08-01
申请号：US196442
申请日：1994-02-15
摘要： The electrolytic cell 1 for producing alkali hydroxide or hydrogen peroxide is divided into the anode compartment 3 and the cathode compartment 4 by the cation exchange membrane 2. The cathode compartment 4 is further divided by the anion exchange membrane 6 into the solution compartment 7 containing a concentrated aqueous solution of alkali hydroxide and the gas compartment accommodating the gas cathode 8. The anion exchange membrane 6 prevents the gas cathode 8 from coming into direct or indirect contact with the aqueous solution of alkali hydroxide. This leads to the extended life of the gas cathode. The above-mentioned arrangement is effective in large-sized electrolytic cells. Thus, the present invention can be applied to industrial electrolysis which has never been achieved with the conventional gas electrode.
摘要翻译： 用于生产碱金属氢氧化物或过氧化氢的电解池1通过阳离子交换膜2分成阳极室3和阴极室4.阴极室4进一步被阴离子交换膜6分成溶液室7， 碱性氢氧化物的浓缩水溶液和容纳气体阴极8的气室。阴离子交换膜6防止气体阴极8与碱金属氢氧化物水溶液直接或间接接触。 这导致气体阴极的寿命延长。 上述布置在大尺寸电解槽中是有效的。 因此，本发明可以应用于以往的气体电极从未实现的工业电解。
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公开(公告)号：US06527940B1
公开(公告)日：2003-03-04
申请号：US08818447
申请日：1997-03-17
IPC分类号： C02F1461
CPC分类号： C02F1/4618 , C02F1/4674 , C02F2001/46195 , C02F2103/026 , C02F2201/46115 , C02F2201/4612 , C02F2201/4613 , C02F2201/46195 , C02F2209/04
摘要： Electrolysis is carried out while supplying an aqueous sodium chloride solution having a weak acidic property to the anode chamber of a water electrolytic cell. The electrolytic cell is partitioned with a cation-exchange membrane into an anode chamber and a cathode chamber. Furthermore, because the pH of the anolyte is sufficiently reduced due to the acid content and pH of the liquid supplied to the anode chamber from the start of electrolysis, which is different from a conventional electrolytic method, the electrolysis of the present invention may be carried out for a time needed to obtain a sufficiently high oxidation reduction potential. Thus, acid water almost the same as that obtained in a conventional method is obtained in the present invention by consuming about {fraction (1/10)} the electric power that is used in a conventional method.
摘要翻译： 在向水电解槽的阳极室供给具有弱酸性的氯化钠水溶液的同时进行电解。 将电解槽用阳离子交换膜分隔成阳极室和阴极室。 此外，由于不同于以往的电解方法，由于从电解开始供给到阳极室的液体的酸含量和pH值充分降低了阳极电解液的pH，所以可以承载本发明的电解 需要一段时间才能获得足够高的氧化还原电位。 因此，在本发明中通过消耗常规方法中使用的电力的大约1/10，获得与常规方法中获得的酸水几乎相同的酸水。
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公开(公告)号：US6126796A
公开(公告)日：2000-10-03
申请号：US81059
申请日：1998-05-19
CPC分类号： C02F1/4674 , C02F1/4618 , C02F2001/46133 , C02F2001/46161 , C02F2001/46185 , C02F2201/46115 , C02F2201/4618 , C02F2201/46185 , C02F2201/46195 , C02F2209/04 , C02F2209/06 , C02F2303/04
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US5746896A
公开(公告)日：1998-05-05
申请号：US626925
申请日：1996-04-03
CPC分类号： C25B11/04 , C25B11/03 , H01M4/8853 , H01M4/8885
摘要： A method of producing a gas diffusion electrode by forming a thin layer comprising a carbon power and a silver powder on the surface of a substrate comprising silver, copper, nickel or stainless steel and fluorinating the thin layer make the carbon water repellent. The gas diffusion electrode can be stably used for a long period of time in sodium chloride electrolysis, etc., without clogging the passage of gas and lowering the water repellency of the electrode.
摘要翻译： 通过在包含银，铜，镍或不锈钢的基材的表面上形成包含碳粉和银粉的薄层制造气体扩散电极的方法，并使氟层氟化。 气体扩散电极可以在氯化钠电解等中长期稳定地使用，而不会堵塞气体的通过并降低电极的斥水性。
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公开(公告)号：US5584976A
公开(公告)日：1996-12-17
申请号：US636185
申请日：1996-04-22
CPC分类号： H01M4/86 , C25B11/035
摘要： A gas diffusion electrode comprisinga porous sheet substrate, at least the surface of which is formed by silver;a reaction layer formed on a first surface of the substrate, comprising a porous silver layer and a mixed layer further comprising a hydrophilic material and a hydrophobic material, the mixed layer being formed on a surface of the porous silver layer; and,a gas diffusion layer formed on a second surface of the substrate, comprising a hydrophobic material.The gas diffusion electrode can be stably used for, e.g., sodium chloride electrolysis for extended periods of time even under severe conditions.
摘要翻译： 一种气体扩散电极，包括至少其表面由银形成的多孔片基片; 形成在所述基板的第一表面上的反应层，包括多孔银层和进一步包含亲水材料和疏水材料的混合层，所述混合层形成在所述多孔银层的表面上; 以及形成在所述基板的第二表面上的气体扩散层，其包含疏水性材料。 即使在恶劣条件下，气体扩散电极也可以稳定地用于例如氯化钠电解延长的时间。
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公开(公告)号：US5766429A
公开(公告)日：1998-06-16
申请号：US659242
申请日：1996-06-05
CPC分类号： C25B11/035 , C25B1/46 , C25B9/08
摘要： An electrolytic cell for producing sodium hydroxide, etc., which is partitioned by an ion-exchange membrane into an anode chamber and a cathode chamber, wherein at least one of a anode and a cathode is closely contacted to the ion-exchange membrane to form a gas diffusion electrode, and a current supplying means having guides for removing sodium hydroxide, etc., formed at the surface of the gas diffusion electrode is disposed therein closely contacting the gas diffusion electrode. By having a current supplying means having removing guides, sodium hydroxide formed at the surface of the gas diffusion electrode is separated therefrom and removed, whereby the supply of the raw material gas and removal of the produced gas can be smoothly performed without clogging perforations of the gas diffusion electrode with the sodium hydroxide.
摘要翻译： 一种用于生产氢氧化钠等的电解池，其由离子交换膜分隔成阳极室和阴极室，其中阳极和阴极中的至少一个与离子交换膜紧密接触以形成 在气体扩散电极的表面形成有气体扩散电极和具有用于除去氢氧化钠等的引导件的电流供给装置配置在与气体扩散电极紧密接触的位置。 通过具有除去引导件的电流供给装置，在气体扩散电极的表面形成的氢氧化钠被分离并除去，从而可以顺利地进行原料气体的供给和产生的气体的除去，而不会堵塞 气体扩散电极与氢氧化钠。
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公开(公告)号：US5676808A
公开(公告)日：1997-10-14
申请号：US636148
申请日：1996-04-22
CPC分类号： H01M4/8605 , C25B11/03 , C25B11/035 , C25B9/08
摘要： An electrolytic cell for obtaining a caustic alkali by closely contacting a gas diffusion electrode comprising a gas-liquid permeable metal substrate and a gas-liquid permeable collector connected to the substrate to a cation-exchange membrane while supplying an oxygen-containing gas from the opposite side of the cation-exchange membrane. Grooves for taking out a liquid containing a caustic alkali are formed in the contact surface of the gas diffusion electrode with the cation-exchange membrane. By the formation of the grooves, clogging of the perforations of the gas diffusion electrode with the caustic alkali so formed is prevented, whereby the gas supply can be smoothly carried out and the electrolysis can be stably carried out without reducing the cell voltage.
摘要翻译： 一种用于通过将包含气液渗透性金属基板的气体扩散电极和与基板连接的气液渗透性集电体与阳离子交换膜紧密接触而获得苛性碱的电解槽，同时从相对的方向供给含氧气体 侧阳离子交换膜。 在气体扩散电极与阳离子交换膜的接触表面中形成用于取出含有苛性碱的液体的槽。 通过形成槽，防止气体扩散电极的穿孔与这样形成的苛性碱的堵塞，从而可以平稳地进行气体供给，并且可以在不降低电池电压的情况下稳定地进行电解。
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