Filter press type electrolytic cell and frames for use therein
    1.
    发明授权
    Filter press type electrolytic cell and frames for use therein 失效
    压滤式电解槽和其中使用的框架

    公开(公告)号:US4378286A

    公开(公告)日:1983-03-29

    申请号:US220595

    申请日:1980-12-29

    IPC分类号: C25B9/20 C25B11/10 C25B9/00

    CPC分类号: C25B9/20

    摘要: A filter press type electrolytic cell for the electrolysis of brine to produce chlorine and caustic includes a plurality of rectangular frames having U-shaped or channel-shaped walls, the open sides of each of which wall members face inwardly, and a downcomer tube in each frame for conducting product from near the top of the frame to the bottom thereof for withdrawal. The downcomer tubes are located near a framing side but are not within a framing channel. The openings of the framing walls are partially covered by cross members of the same material as the framing to improve the resistance thereof to distortion during closing of the cell. Utilization of the downcomer tubes, preferably of polytetrafluoroethylene for the catholyte compartment and titanium or titanium clad material for the anolyte compartment, allows the maintaining of the framing channel open so that inner walls thereof are electrolytically protected against corrosion. Otherwise, when enclosed or tubular framing members are employed inner wall portions thereof can become corroded after relatively short periods of use. The invention also relates to frames for use in filter press type electrolytic cells and to a method of electrolyzing, wherein such frames and cells may be employed.

    摘要翻译: 用于电解盐水以产生氯和苛性碱的压滤式电解槽包括多个具有U形或槽形壁的矩形框架,每个壁构件的开口侧面向内,每个壁构件的开口侧面向内 用于从靠近框架的顶部到底部进行产品以用于抽出。 降液管位于框架边附近,但不在框架通道内。 框架壁的开口部分地被与框架相同的材料的横向构件覆盖,以提高其在闭孔期间的变形阻力。 利用降液管,优选聚四氟乙烯用于阴极电解液室和用于阳极电解液室的钛或钛包层材料,允许保持框架通道打开,使得其内壁被电解保护以免受腐蚀。 否则,当使用封闭或管状框架构件时,其内壁部分在相对短的使用时间后可能被腐蚀。 本发明还涉及用于压滤式电解槽的框架和电解方法,其中可以采用这种框架和单元。

    Production of aqueous metal hydroxide solutions of low metal halide
concentration
    2.
    发明授权
    Production of aqueous metal hydroxide solutions of low metal halide concentration 失效
    生产低金属卤化物浓度的金属氢氧化物水溶液

    公开(公告)号:US3935096A

    公开(公告)日:1976-01-27

    申请号:US430116

    申请日:1974-01-02

    CPC分类号: B01D61/243 B01D71/32

    摘要: A cation-active permselective membrane of a hydrolyzed copolymer of a perfluorinated olefin and a fluorosulfonated perfluorovinyl ether, a modification thereof, or sulfostyrenated perfluorinated ethylene propylene copolymer is employed to dialytically pass metal hydroxide from an aqueous solution thereof containing metal halide halates, thereby purifying the metal hydroxide of the metal halide. The named cation-active permselective membrane materials resist deterioration by the halates, hydroxide and halide components of the solution being purified.The invention also includes a dialysis cell for effecting the purification.

    摘要翻译: 使用全氟化烯烃和氟磺化全氟乙烯基醚的水解共聚物的阳离子活性渗透选择性膜,其改性物或磺基磺化的全氟化乙烯丙烯共聚物透析从其含有卤化金属卤化物的水溶液中使金属氢氧化物,从而纯化 金属卤化物的金属氢氧化物。 命名的阳离子活性选择性渗透膜材料可以抵抗被纯化的溶液的卤化物,氢氧化物和卤化物组分的劣化。

    Electrolytic cell seal
    3.
    发明授权
    Electrolytic cell seal 失效
    电解槽密封

    公开(公告)号:US3968022A

    公开(公告)日:1976-07-06

    申请号:US515741

    申请日:1974-10-17

    摘要: A seal for preventing passage of fluid through an opening in an electrolytic cell wall through which a conductor for carrying electricity to or from a cell electrode passes includes as elements thereof a portion of the cell wall opening which is tapered so as to be larger at the outer part of the wall than at the inner part, silicone rubber in the narrower tapered opening part, an electrolyte-resistant rubber, such as neoprene, in the wider tapered opening part and means for pressing such rubber against the silicone rubber so as to help seal the silicone rubber against the tapered cell wall and the conductor. Preferably, the seal is a gas-tight seal and prevents hydrogen from escaping into the atmosphere from the catholyte compartment of an electrolytic cell for the electrolysis of brine. Such a cell is preferably an externally connected (by conductors) bipolar cell but the invention is adaptable for use in sealing off openings in the cell walls between the electrolyte compartments of internally connected bipolar cells and for monopolar electrolytic cells too.

    摘要翻译: 用于防止流体通过电解槽内的开口的密封件,用于将电力传送到电池单元电极的导体通过该密封件,通过包括细胞壁开口的一部分,其中锥形的部分在 壁的外部部分比内部部分,较窄的锥形开口部分的硅橡胶,较宽的锥形开口部分中的耐氯橡胶等耐电解橡胶,以及用于将这种橡胶压靠在硅橡胶上的装置,以帮助 将硅橡胶密封在锥形细胞壁和导体上。 优选地,密封件是气密密封件,并且防止氢气从用于电解盐水的电解池的阴极电解液室逸出到大气中。 这样的电池优选是外部连接(通过导体)双极电池,但是本发明适用于密封内部连接的双极电池的电解质隔室和单极电解池之间的电池壁中的开口。