Bipolar system electrolytic cell
    4.
    发明授权
    Bipolar system electrolytic cell 失效
    双极体系电解槽

    公开(公告)号:US4111779A

    公开(公告)日:1978-09-05

    申请号:US790924

    申请日:1977-04-26

    IPC分类号: C25B9/20 C25B9/00

    CPC分类号: C25B9/206

    摘要: A bipolar system electrolytic cell having a partition wall made of explosion-bonded titanium plate and iron plate which is electrically connected to anode of titanium substrate at its titanium side and to cathode of iron at its iron side, space is preferably given between anode and the partition wall and also between cathode and the partition wall. An assembly having a number of such unit cells arranged in series is useful for electrolysis of sodium chloride which can be performed under a low voltage per unit cell.

    Electrolysis
    5.
    发明授权
    Electrolysis 失效
    电解

    公开(公告)号:US4108742A

    公开(公告)日:1978-08-22

    申请号:US771978

    申请日:1977-02-25

    IPC分类号: C25B1/46 C25B1/16 C25B1/26

    CPC分类号: C25B1/46

    摘要: In an electrolytic cell having cation exchange membrane as diaphragm to partition said cell into cathode and anode chambers, electrolysis of an electrolyte aqueous solution is conducted while generating gas from anode by keeping the inner pressure in cathode chamber higher than that in anode chamber. Some disadvantages caused in the case of electrolyzing an aqueous alkali metal halide solution to form alkali metal hydroxide in cathode chamber are overcome by adjusting the anolyte at pH

    摘要翻译: 在具有阳离子交换膜作为隔膜的电解池中,将电池分隔成阴极室和阳极室,通过将阴极室内的内压保持在比阳极室高的方式从阳极产生气体的同时进行电解。 在阴极室中电解碱金属卤化物水溶液以形成碱金属氢氧化物的情况下的一些缺点是通过调节pH <3.5的阳极电解液来克服。 还公开了可用于本方法的电解池。

    Process for the production of high purity aqueous alkali hydroxide
solution
    6.
    发明授权
    Process for the production of high purity aqueous alkali hydroxide solution 失效
    生产高纯度碱性氢氧化碱水溶液的方法

    公开(公告)号:US4276130A

    公开(公告)日:1981-06-30

    申请号:US42304

    申请日:1979-05-25

    IPC分类号: C25B1/46 C25B1/16 C25B1/26

    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。

    Concentration process by multistage, multiple effect evaporator
    7.
    发明授权
    Concentration process by multistage, multiple effect evaporator 失效
    浓缩过程采用多级,多效蒸发器

    公开(公告)号:US4132588A

    公开(公告)日:1979-01-02

    申请号:US764471

    申请日:1977-01-31

    申请人: Shinsaku Ogawa

    发明人: Shinsaku Ogawa

    IPC分类号: B01D1/26 C01D1/42

    CPC分类号: B01D1/26 C01D1/42

    摘要: A method and apparatus in which the effects in multiple effect evaporation systems are separated into successive stages and the vapors in the stages of one effect are utilized as a heat source for the liquid in stages of a subsequent effect.

    摘要翻译: 一种方法和装置,其中多效蒸发系统的效果被分成连续的阶段,并且在一个效应的阶段中的蒸气被用作液体的热源,在后续的效果阶段。

    Polyurethane coating composition
    8.
    发明授权
    Polyurethane coating composition 失效
    聚氨酯涂料组合物

    公开(公告)号:US4007151A

    公开(公告)日:1977-02-08

    申请号:US583221

    申请日:1975-06-02

    摘要: A solventless polyurethane coating composition having a low viscosity suitable for coating, which comprises (a) an aliphatic or alicyclic polyisocyanate containing at least 3 isocyanate groups, (b) at least 1/3 equivalent, based on the isocyanate groups, of a monohydric alcohol, and (c) a low-molecular-weight polyhydric alcohol having at least 3 active hydrogen atoms. The composition provides coatings having superior properties such as good hardness, weatherability and intimate adhesion to a substrate.

    摘要翻译: 一种具有适于涂布的低粘度的无溶剂聚氨酯涂料组合物,其包含(a)含有至少3个异氰酸酯基团的脂族或脂环族多异氰酸酯,(b)至少1/3当量的异氰酸酯基团的一元醇 ,和(c)具有至少3个活性氢原子的低分子量多元醇。 该组合物提供具有优异性能的涂层,例如良好的硬度,耐候性和与基材的密合性。

    Electrolysis of sodium chloride in an ion-exchange membrane cell
    9.
    发明授权
    Electrolysis of sodium chloride in an ion-exchange membrane cell 失效
    在离子交换膜电池中电解氯化钠

    公开(公告)号:US4190505A

    公开(公告)日:1980-02-26

    申请号:US948659

    申请日:1978-10-03

    IPC分类号: C25B1/46 C25B1/16 C25B1/26

    CPC分类号: C25B1/46

    摘要: A sodium chloride feed solution containing an iron cyanide complex is subjected to purification to reduce the content of iron cyanide complex to not more than 0.5 ppm before it is fed as anolyte into an ion-exchange membrane electrolytic cell. The iron cyanide complex is preferably converted by oxidative decomposition to iron ions for removal. By use of such a purified sodium chloride as starting material, electrolysis of sodium chloride using an ion-exchange membrane can be performed for a long term at a constant electrolysis voltage.

    摘要翻译: 将含有氰化铁络合物的氯化钠进料溶液进行纯化,将其作为阳极电解液进料到离子交换膜电解池中之前将氰化铁络合物的含量降低至不大于0.5ppm。 氰化铁络合物优选通过氧化分解转化成铁离子以除去。 通过使用这种纯化的氯化钠作为原料,可以在恒定的电解电压下长时间地使用离子交换膜电解氯化钠。

    Process for electrolysis of alkali halide
    10.
    发明授权
    Process for electrolysis of alkali halide 失效
    碱性卤化物电解方法

    公开(公告)号:US4105515A

    公开(公告)日:1978-08-08

    申请号:US811277

    申请日:1977-06-29

    IPC分类号: C25B1/46 C25B1/16 C25B1/26

    CPC分类号: C25B1/46 Y02P20/129

    摘要: In carrying out electrolysis of alkali halide in an electrolytic cell having anode and cathode chambers separated by a cation exchange membrane by feeding an aqueous alkali halide solution into the anode chamber to produce halogen gas in the anode chamber and caustic alkali and hydrogen gas in the cathode chamber, the electrolytic cell is pressurized at higher than atmospheric pressure to obtain various improved results.