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    • 2. 发明授权
    • Process for electro-dialysis
    • 电透析方法
    • US4160713A
    • 1979-07-10
    • US873680
    • 1978-01-30
    • Harumi MatsuzakiSankichi TakahashiOsamu Kuroda
    • Harumi MatsuzakiSankichi TakahashiOsamu Kuroda
    • B01D65/06B01D13/02
    • B01D61/44B01D2311/165B01D2311/243B01D2311/2661
    • In a process for electro-dialysis which comprises passing an electrolyte through dilution chambers and concentration chambers formed between a large number of alternately counterposed anion exchange membranes and cation exchange membranes, and applying an electric potential to a pair of electrodes provided at both ends of a plurality of these chambers, thereby migrating ions in the electrolyte through the membranes and effecting dilution or concentration of the electrolyte, such a volumic rate of air bubbles is introduced to the lower parts of the dilution chambers as to make the thickness of a diffusion layer formed by concentration polarization near the ion exchange membranes in the dilution chambers smaller than when air bubbles are not introduced thereto, and make the resistance between the electrodes smaller than when the air bubbles are not introduced thereto. Superficial air velocity of air bubbles introduced into the dilution chambers is preferably 1-4 cm/sec.
    • 在电透析过程中,该方法包括使电解液通过稀释室和形成在大量交替对置的阴离子交换膜和阳离子交换膜之间的浓缩室,并将电位施加到设置在 多个这样的室,从而通过膜将电解质中的离子迁移并进行电解质的稀释或浓缩,将这样的体积的气泡引入稀释室的下部,以形成扩散层的厚度 通过在稀释室内的离子交换膜附近的浓度偏振小于不引入气泡时的离子交换膜的极化浓度,并且使得电极之间的电阻小于不引入气泡时的电阻。 引入稀释室的气泡的表观空气速度优选为1-4cm / sec。
    • 10. 发明授权
    • Method and apparatus for concentration aqueous solution and method and
apparatus for recovering temperature
    • 浓缩水溶液的方法和装置以及回收温度的方法和装置
    • US4746437A
    • 1988-05-24
    • US704577
    • 1985-02-22
    • Yasuo KosekiSankichi TakahashiKatsuya EbaraOsamu KurodaHideaki Kurokawa
    • Yasuo KosekiSankichi TakahashiKatsuya EbaraOsamu KurodaHideaki Kurokawa
    • B01D61/36F25B15/14B01D13/00
    • B01D61/362B01D71/36F25B15/14B01D2313/246Y10S159/27Y10S203/18
    • The method and apparatus for concentration aqueous solution in accordance with the present invention is characterized in that a hydrophobic porous membrane through which vapor can permeate, but not liquid, is brought into contact with an aqueous solution containing a solute at a concentration of at least 30%, and the water contained in the aqueous solution at the interface with the membrane is evaporated and permeates through the membrane. A method and an apparatus of recovering temperature of an aqueous solution comprising an aqueous solution concentration step in which the aqueous solution contact with the membrane, the water being evaporated; and a dilution step in which the resultant concentrated solution is diluted; wherein a temperature is obtained higher or lower than that of said aqueous solution. The method and apparatus for concentrating an aqueous solution can be used as a means or apparatus for concentrating an aqueous solution in a dilution type of heat pump, an absorption type of heat pump or an absorption type of refrigerator. Aqueous solutions for high-temperature outputs of dilution systems include aqueous solutions of sulfuric acid, nitric acid, etc., and for low-temperature outputs include aqueous solutions of potassium nitrate, sodium nitrate, etc. and further for absorption systems include aqueous solutions of NaClO.sub.3, lithium bromide, etc.
    • 根据本发明的浓缩水溶液的方法和装置的特征在于,蒸气可以渗透而不是液体的疏水性多孔膜与含有浓度至少为30的溶质的水溶液接触 %,并且在与膜的界面处的水溶液中包含的水蒸发并渗透通过膜。 回收水溶液温度的方法和装置,其包括水溶液浓缩步骤,其中水溶液与膜接触,水被蒸发; 和稀释所得浓缩溶液的稀释步骤; 其中获得比所述水溶液更高或更低的温度。 用于浓缩水溶液的方法和装置可以用作浓缩稀释型热泵,吸收型热泵或吸收式冰箱的水溶液的手段或装置。 用于稀释系统的高温输出的水溶液包括硫酸,硝酸等的水溶液,并且对于低温输出,包括硝酸钾,硝酸钠等的水溶液,并且进一步用于吸收体系包括水溶液 NaClO3,溴化锂等