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    METHOD AND APPARATUS FOR PURIFYING NON-AQUEOUS LIQUID, AND ION EXCHANGE RESIN PRODUCTION METHOD AND PRETREATMENT APPARATUS
    1.
    发明公开
    METHOD AND APPARATUS FOR PURIFYING NON-AQUEOUS LIQUID, AND ION EXCHANGE RESIN PRODUCTION METHOD AND PRETREATMENT APPARATUS 审中-公开

    公开(公告)号：US20240238775A1

    公开(公告)日：2024-07-18

    申请号：US18284356

    申请日：2022-02-17

    Applicant: ORGANO CORPORATION

    Inventor： Noriko TAKADA ,  Kaoru NUKUI

    IPC: B01J47/016 ,  B01J39/05 ,  B01J49/60

    CPC classification number: B01J47/016 ,  B01J39/05 ,  B01J49/60

    Abstract: Provided is a method for purifying a nonaqueous liquid in a simple and cost-efficient manner, without requiring a large amount of the nonaqueous liquid, by using an ion exchange resin having a reduced water content. The method for purifying a nonaqueous liquid using an ion exchange resin includes bringing the ion exchange resin into contact with a nonaqueous liquid for pretreatment having a relative permittivity at 25° C. of 20 or higher and bringing the ion exchange resin after the pretreatment into contact with a nonaqueous liquid to be purified, wherein the relative permittivity at 25° C. of the nonaqueous liquid for pretreatment is greater than the relative permittivity at 25° C. of the nonaqueous liquid to be purified, and the concentration of metals to be reduced in the nonaqueous liquid for pretreatment is 5 μg/L or less.

    Method and device of removing and recycling metals from mixing acid solution
    4.
    发明授权
    Method and device of removing and recycling metals from mixing acid solution 有权

    公开(公告)号：US11976374B2

    公开(公告)日：2024-05-07

    申请号：US17017337

    申请日：2020-09-10

    Applicant: MEGA UNION TECHNOLOGY INCORPORATED

    Inventor： Kuo-Ching Lin ,  Yung-Cheng Chiang ,  Shr-Han Shiu ,  Wei-Rong Tey ,  Yu-Hsuan Li

    IPC: C25C7/00 ,  B01J39/05 ,  B01J39/18 ,  B01J47/02 ,  C01G51/00 ,  C25C1/08

    CPC classification number: C25C1/08 ,  B01J39/05 ,  B01J39/18 ,  B01J47/02 ,  C01G51/003

    Abstract: A method and device of removing and recycling metals from a mixing acid solution, includes adsorbing a mixing acid solution with a pH value of −1 to 4 and a cobalt ion concentration of 100 to 1,000 mg/L by at least two cation resins in series setting to the cobalt ion concentration in the mixing acid solution is less than 10 mg/L, and then adjusting the pH value of the mixing acid solution after adsorption to meet a discharge standard, wherein the particle size of the at least two cation resins in series setting is 150˜1,200 μm. After the cation resins are saturated by adsorption, regenerating the cation resins by sulfuric acid to form a cobalt sulfate solution, and then electrolytically treating the cobalt sulfate solution to obtain electrolytic cobalt and sulfuric acid electrolyte. The operation process is simple without complicated equipment, and it can effectively recycle metals from mixing acid solutions. The cationic resin and sulfuric acid solution can also be reused, so the method of the present invention has environmental and economic benefits.

    ION EXCHANGE MEMBRANE AND ELECTROLYZER
    8.
    发明公开
    ION EXCHANGE MEMBRANE AND ELECTROLYZER 审中-公开

    公开(公告)号：US20230349058A1

    公开(公告)日：2023-11-02

    申请号：US18139518

    申请日：2023-04-26

    Applicant: ASAHI KASEI KABUSHIKI KAISHA

    Inventor： Nao KAJIMOTO ,  Koji OKAMOTO

    IPC: C25B13/08 ,  C25B13/02 ,  B01J47/127 ,  B01J39/20 ,  B01J39/05

    CPC classification number: C25B13/08 ,  C25B13/02 ,  B01J47/127 ,  B01J39/20 ,  B01J39/05 ,  C25B1/46

    Abstract: An ion exchange membrane containing: a layer S containing a fluorine-containing polymer having a sulfonic acid group; a layer C containing a fluorine-containing polymer having a carboxylic acid group; and—a plurality of reinforcing materials functioning as at least one of reinforcement yarn and sacrifice yarn; wherein, when the ion exchange membrane is viewed from a top surface, an average cross-sectional thickness A of the ion exchange membrane measured in pure water for a region, is μm or more and 75 μm or less, and wherein a strength change ratio calculated from strength S2 of the ion exchange membrane measured after the ion exchange membrane is subjected to a predetermined electrolysis test and strength S1 of the ion exchange membrane measured before the ion exchange membrane is subjected to the electrolysis test, in terms of 100×S2/S1, is 85% or more and 120% or less.

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