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    ELECTRODIALIZING METHOD
    11.
    发明专利
    ELECTRODIALIZING METHOD 失效

    公开(公告)号：JPS53120685A

    公开(公告)日：1978-10-21

    申请号：JP3550877

    申请日：1977-03-31

    Applicant: ASAHI CHEMICAL IND

    Inventor： KAWATE HIDEO ,  AZUMA ISAMU

    IPC: B01D61/50

    Abstract: PURPOSE:To conduct electrodialysis efficiently and inexpensively by installing headers of specific height from the upper surface of stacks at each outlet ends of pipes of diluting chambers, concentrating chambers, anode chambers, and cathode chambers of an electrodialysis cell of an electrodialyzing apparatus of a specific scale.

    GASKET FOR ELECTRODIALYZING TANK
    12.
    发明专利
    GASKET FOR ELECTRODIALYZING TANK 失效

    公开(公告)号：JPH02290227A

    公开(公告)日：1990-11-30

    申请号：JP2714890

    申请日：1990-02-08

    Applicant: ASAHI CHEMICAL IND ,  MOON STAR CO

    Inventor： AZUMA ISAMU ,  HADAMA SEIKI

    IPC: B01D61/50 ,  B01D63/00 ,  B01D63/08

    Abstract: PURPOSE:To maintain a stable electrodialyzing performance over an extended period of time by attaching a gasket frame and a spacer firmly into an integral form by means of a thermoplastic elastomer interposed between the inner peripheral edge of the gasket frame and the outer peripheral edge of the spacer. CONSTITUTION:In a gasket with a spacer 2a provided in an electric nonconducting part and/or conducting part of a gasket frame 1a, the spacer 2a is of such size as to keep its outer peripheral edge out of contact with the inner peripheral edge of the gasket frame 1a. And the gasket frame 1a and the spacer 2a are firmly attached into an integral form by a thermoplastic elastomer interposed between the inner peripheral edge of the gasket frame 1a and the outer peripheral edge of the spacer 2a. As a result, this method provides no liq. leakage even with a lower pressure applied for the gasket attachment than in the case of the conventional gasket for use in electrodialysis and, unlike the prior art gasket attaching methods, there is no problem of damages to ion-exchange membrane at the gasket attachment and a stable electrodialyzing performance can be maintained over an extended period of time.

    GASKET FOR ELECTRODIALYSIS
    15.
    发明专利
    GASKET FOR ELECTRODIALYSIS 失效

    公开(公告)号：JPS6265708A

    公开(公告)日：1987-03-25

    申请号：JP20398585

    申请日：1985-09-14

    Applicant: ASAHI CHEMICAL IND

    Inventor： AZUMA ISAMU ,  KAMAYA MASAMI

    IPC: B01D61/50

    Abstract: PURPOSE:To obtain the titled gasket having a large current conducting area without causing the decomposition of water and the deposition of scales by fixing a diagonal net consisting essentially of polyolefin and having specified thickness and the radius of curvature of the zigzag at more than a specified value in a gasket frame as a spacer. CONSTITUTION:A diagonal net made of polyolefin and having 0.3-0.6mm thickness and >=30m radius of curvature of the zigzag is used and a current conducting part spacer 4 for a gasket frame is formed. The spacer is stuck on a site 5 on the two opposite sides of a gasket frame 1 provided with a salt passage 2 and fixed to form a gasket. Plural sheets of the gaskets are used for a dilution chamber and a condensation chamber, the gaskets are alternately assembled by using a cation-exchange membrane and an anion-exchange membrane, the assembly is temporarily tightened by a clamping frame, the assembly is set in a filter press-type electrodialyzing vessel and the whole body is clamped.

    GASKET FOR ELECTRODIALYSIS CELL
    17.
    发明专利
    GASKET FOR ELECTRODIALYSIS CELL 失效

    公开(公告)号：JPS57174106A

    公开(公告)日：1982-10-26

    申请号：JP5712181

    申请日：1981-04-17

    Applicant: ASAHI CHEMICAL IND

    Inventor： KAMAYA MASAMI ,  AZUMA ISAMU

    IPC: C09K3/10 ,  B01D61/50

    Abstract: PURPOSE:To obtain a gasket for electrodialysis cell which is free from leakage of dialyzate and has high durability by forming net-like spacer parts forming salt liquid passing parts and a gasket frame to one body. CONSTITUTION:Belt-like bodies of vulcanized natural rubber are joined together by means of adhesive, whereby a picture frame-like gasket frame 3 of 19.6dm effective electricity conducting area is manufactured. Next, notches and holes 5 for communication of liquid are opened alternately in the broad belt-like parts at the top and bottom thereof. On the other hand, an unvulcanized natural rubber sheet added with vulcanizing agent is cut to belt-like bodies, and these are placed on the right and left ends of net-like spacers made of PP and are then hot pressured and molded by vulcanization, whereby salt liquid passing parts 4 are made. These parts are joined to the notch parts of the gasket frame. At the same time, spacers 7 are joined to the electricity conducting parts 6 of the gasket frame as well. According to this method, the gasket formed with the net- like spacers are the gasket frame into one body is obtained easily.

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