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    Electrodialysis stack
    2.
    发明授权
    Electrodialysis stack 有权

    公开(公告)号：US11484839B2

    公开(公告)日：2022-11-01

    申请号：US16609406

    申请日：2017-05-04

    Applicant: BL Technologies, Inc.

    Inventor： John H. Barber ,  Wojciech Gutowski ,  Yongchang Zheng ,  Russell James MacDonald

    IPC: B01D61/50 ,  B01D63/08

    Abstract: The present disclosure provides an electrodialysis stack that may be used for the treatment of an electrically conductive solution. The stack includes two electrodes (at least one is a recessed electrode), a plurality of ion-transport membranes and stack spacers. The membranes and spacers are arranged between the electrodes to define electrodialysis cell pairs. The stack includes an electrically insulated zone that extends substantially from a distribution manifold past the recessed edge of the electrode and substantially from the recessed electrode to the opposite electrode for a distance that is about 8% to 100% of the total distance between the electrodes. The overlap distance that the electrically insulated zone extends past the recessed edge of the electrode is calculated as: distance in cm=(0.062 cm−1)*(exp(−60/total cp)*(area in cm2 of the manifold ducts of the concentrated stream at the recessed edge) +/−10%.

    Ion exchange polymers and a method for making ion exchange polymers
    3.
    发明授权
    Ion exchange polymers and a method for making ion exchange polymers 有权

    公开(公告)号：US10576424B2

    公开(公告)日：2020-03-03

    申请号：US15022751

    申请日：2013-09-17

    Applicant: BL TECHNOLOGIES, INC.

    Inventor： Yan Gao ,  Russell James MacDonald ,  Kai Zhang ,  Yonghong Zhao

    IPC: B01D61/44 ,  C08J5/22 ,  B01J47/12 ,  B01J41/13

    Abstract: An ion exchange polymer is provided. The ion exchange polymer is a reaction product of a reaction between a crosslinker monomer and a cationic monomer. The crosslinker monomer is a reaction product of a reaction between a first crosslinking monomer and a second crosslinking monomer. Further, the cationic monomer comprises a quaternary ammonium group. A method for making an ion exchange polymer is also provided. The method comprises a step of preparing a curable solution and a step of curing the curable solution. The step of preparing the curable solution comprises mixing a pair of crosslinking monomers, a cationic monomer that comprises a quaternary ammonium group and an acid. A membrane is also provided. The membrane comprises the ion exchange polymer made by the method provided.

    ION EXCHANGE MEMBRANES CONTAINING INORGANIC PARTICLES
    4.
    发明申请
    ION EXCHANGE MEMBRANES CONTAINING INORGANIC PARTICLES 审中-公开

    公开(公告)号：US20190153176A1

    公开(公告)日：2019-05-23

    申请号：US16251598

    申请日：2019-01-18

    Applicant: BL Technologies, INC.

    Inventor： Kai ZHANG ,  John H. Barber ,  Russell James MacDonald ,  Yongchang Zheng ,  Li May Goh ,  Yan Gao ,  Yonghong Zhao

    IPC: C08J5/22 ,  H01M8/103 ,  H01M8/1051 ,  C02F1/42

    Abstract: This specification describes an ion exchange membrane and a method of making it. The membrane may be used, for example, in an electrodialysis module or electrochemical cell. The membrane comprises an ion exchange polymer and inorganic particles preferably linked to the ion exchange polymer. To make a membrane, inorganic particles are mixed into an ion exchange membrane pre-cursor. A polymerization initiator or catalyst is then added and the resulting mixture is placed in a form and cured. The inorganic particles may comprise, for example, an oxidized form of graphite such as graphite oxide. The ion exchange polymer may comprise an ionic monomer, containing a quaternary ammonium group for anion exchange or a sulfonate group for cation exchange, along with a crosslinking co-monomer containing polymerizable diacrylic functionalities. The membrane is self-supporting and can be made without a supporting fabric.

    Electrodialysis stack
    5.
    发明授权
    Electrodialysis stack 有权

    公开(公告)号：US11904278B2

    公开(公告)日：2024-02-20

    申请号：US17955445

    申请日：2022-09-28

    Applicant: BL Technologies, Inc.

    Inventor： John H. Barber ,  Wojciech Gutowski ,  Yongchang Zheng ,  Russell James MacDonald

    IPC: B01D61/50 ,  B01D63/08

    CPC classification number: B01D61/50 ,  B01D63/085 ,  B01D2313/14 ,  B01D2325/42

    Abstract: The present disclosure provides an electrodialysis stack that may be used for the treatment of an electrically conductive solution. The stack includes two electrodes (at least one is a recessed electrode), a plurality of ion-transport membranes and stack spacers. The membranes and spacers are arranged between the electrodes to define electrodialysis cell pairs. The stack includes an electrically insulated zone that extends substantially from a distribution manifold past the recessed edge of the electrode and substantially from the recessed electrode to the opposite electrode for a distance that is about 8% to 100% of the total distance between the electrodes. The overlap distance that the electrically insulated zone extends past the recessed edge of the electrode is calculated as:

    distance in cm=(0.062 cm−1)*(exp(−60/total cp)*(area in cm2 of the manifold ducts of the concentrated stream at the recessed edge)+/−10%.

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