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    STARTUP METHOD FOR ELECTROLYTIC SULFURIC ACID SOLUTION MANUFACTURING SYSTEM
    4.
    发明申请
    STARTUP METHOD FOR ELECTROLYTIC SULFURIC ACID SOLUTION MANUFACTURING SYSTEM 有权

    公开(公告)号：US20230079765A1

    公开(公告)日：2023-03-16

    申请号：US17912910

    申请日：2020-09-15

    申请人： KURITA WATER INDUSTRIES LTD.

    发明人： Hajime ISERI ,  HAruyoshi YAMAKAWA ,  Yuzuki YAMAMOTO

    IPC分类号： C25B1/22 ,  C25B9/13 ,  C25B15/027 ,  C25B15/021

    摘要： Hydrogen peroxide water and, if necessary, sulfuric acid and/or water, are added to a sulfuric acid solution in a storage tank of an electrolytic sulfuric acid solution manufacturing system to enhance the oxidizing power of the sulfuric acid solution supplied to an electrolytic cell to perform electrolysis. The manufacturing system starts up during an initial operation after completion of the system, or after replacement of a sulfuric acid-containing solution in the system, or during an operation after the concentration of a persulfuric acid component in the sulfuric acid solution stored in the system decreases due to shutdown of the system, or other similar situations. By starting up the manufacturing system in this manner, the startup of the system, which manufactures an electrolytic sulfuric acid solution containing a persulfuric acid component generated by electrolyzing sulfuric acid, can be completed in a short time, and the energy consumption can be reduced.

    Lithium-ion batteries recycling process
    5.
    发明授权
    Lithium-ion batteries recycling process 有权

    公开(公告)号：US11508999B2

    公开(公告)日：2022-11-22

    申请号：US16648793

    申请日：2018-09-27

    申请人： Recyclage Lithion Inc.

    发明人： Dominique Morin ,  Charles Gagne-Bourque ,  Emilie Nadeau ,  Benoit Couture

    IPC分类号： H01M6/52 ,  H01M10/54 ,  C22B1/248 ,  C22B7/00 ,  C22B3/00 ,  C22B26/12 ,  C25B1/22 ,  H01M10/0525 ,  C22B3/26

    摘要： It is provided a process for recycling lithium ion batteries comprising shredding the lithium-ion batteries and immersing residues in an organic solvent; feeding the shredded batteries residues in a dryer producing a gaseous organic phase and dried batteries residues; feeding the dried batteries residues to a magnetic separator removing magnetic particles; grinding the non-magnetic batteries residues; mixing the fine particles and an acid producing a metal oxides slurry and leaching said metal oxides slurry; filtering the leachate removing the non-leachable metals; feeding the leachate into a sulfide precipitation tank; neutralizing the leachate; mixing the leachate with an organic extraction solvent; separating cobalt and manganese from the leachate using solvent extraction and electrolysis; crystallizing sodium sulfate from the aqueous phase; adding sodium carbonate to the liquor and heating up the sodium carbonate and the liquor producing a precipitate of lithium carbonate; and drying and recuperating the lithium carbonate.

    LITHIUM-ION BATTERIES RECYCLING PROCESS
    6.
    发明申请
    LITHIUM-ION BATTERIES RECYCLING PROCESS 有权

    公开(公告)号：US20210376399A1

    公开(公告)日：2021-12-02

    申请号：US16648793

    申请日：2018-09-27

    申请人： Recyclage Lithion Inc.

    发明人： Dominique MORIN ,  Charles GAGNE-BOURQUE ,  Emilie NADEAU ,  Benoit COUTURE

    IPC分类号： H01M10/54 ,  H01M10/0525 ,  C22B3/00 ,  C22B26/12 ,  C22B7/00 ,  C22B1/248 ,  C25B1/22

    摘要： It is provided a process for recycling lithium ion batteries comprising shredding the lithium-ion batteries and immersing residues in an organic solvent; feeding the shredded batteries residues in a dryer producing a gaseous organic phase and dried batteries residues; feeding the dried batteries residues to a magnetic separator removing magnetic particles; grinding the non-magnetic batteries residues; mixing the fine particles and an acid producing a metal oxides slurry and leaching said metal oxides slurry; filtering the leachate removing the non-leachable metals; feeding the leachate into a sulfide precipitation tank; neutralizing the leachate; mixing the leachate with an organic extraction solvent; separating cobalt and manganese from the leachate using solvent extraction and electrolysis; crystallizing sodium sulfate from the aqueous phase; adding sodium carbonate to the liquor and heating up the sodium carbonate and the liquor producing a precipitate of lithium carbonate; and drying and recuperating the lithium carbonate.

    Large capacity acid or base generator and method of use
    10.
    发明授权
    Large capacity acid or base generator and method of use 有权

    公开(公告)号：US09645124B2

    公开(公告)日：2017-05-09

    申请号：US13738632

    申请日：2013-01-10

    申请人： Dionex Corporation

    发明人： Yan Liu ,  Hamish Small ,  Nebojsa Avdalovic

    IPC分类号： G01N30/02 ,  G01N30/26 ,  G01N30/34 ,  G01N30/96 ,  C25B1/16 ,  C25B1/22

    CPC分类号： G01N30/96 ,  C25B1/16 ,  C25B1/22 ,  G01N30/02 ,  G01N30/34 ,  G01N2030/965 ,  Y10T436/25 ,  B01D15/36 ,  B01D15/426

    摘要： Method and apparatus for generating an acid or base, e.g. for chromatographic analysis of anions. For generating a base the method includes the steps of providing a cation source in a cation source reservoir, flowing an aqueous liquid stream through a base generation chamber separated from the cation source reservoir by a barrier (e.g. a charged membrane) substantially preventing liquid flow while providing a cation transport bridge, applying an electric potential between an anode cation source reservoir and a cathode in the base generation chamber to electrolytically generate hydroxide ions therein and to cause cations in the cation source reservoir to electromigrate and to be transported across the barrier toward the cathode to combine with the transported cations to form cation hydroxide, and removing the cation hydroxide in an aqueous liquid stream as an effluent from the first base generation chamber. Suitable cation sources include a salt solution, a cation hydroxide solution or cation exchange resin.