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    • 5. 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