• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    An electrolytic cell has dimensionally stable anodes 4, non- porous ion-selective membranes 8 separating the anodes from a cathode compartment in a cathode container 1 and a porous, static bed of loose, particulate conducting cathodic material 10 in the cathode compartment of the container. The cathodic material extends between conductive walls of the cathode compartment and the membranes and contacts the conductive walls of the cathode and the membranes to carry current between the walls of the cathode compartment and the membranes. This construction reduces the electrodic gap to substantially the thickness of the membranes and presses the membranes against the anodes. It produces greater uniformity of current density over the entire electrodic area, substantially free from localised differences of current density which tend to cause deterioration of the membranes by the creation of localised mechanical and electrical stresses in other types of cells. The invention also provides a method for carrying current from the effective cathodic surface to the walls of the cathode compartment. <IMAGE>
    公开号:SU1286109A3
    申请号:SU782633304
    申请日:1978-06-29
    公开日:1987-01-23
    发明作者:Пеллегри Альберто
    申请人:Оронцио Де Нора Импианти Элеттрохимичи С.П.А. (Фирма)；
    IPC主号:
    专利说明:

    cl

    Ca
    eleven
    The invention relates to the field of electrolytic cell structures for electrolytic synthesis, in particular for the electrolysis of alkali metal chlorides.
    The aim of the invention is to reduce energy consumption and increase the reliability of the operation of the electrolyzer.
    Figure 1 shows a cell with cylindrical electrodes, a vertical section; figure 2 - section aa in figure 1.
    The electrolyzer consists of a housing 1 serving as a cathode, cylindrical perforated anodes 2 and cylindrical cation-exchange membranes 3. At the bottom of the device there is a nozzle 4 for supplying sodium chloride, in the upper part there is a nozzle 5 for chlorine withdrawal sodium chloride, in the cathode chamber 8, backfill 9 is placed; it is made of cathode material in the form of balls, cylinders, rings, saddles, shavings or metal fibers, and the backfill tightly presses the membrane to the anode. In the cathode chamber there is a nozzle 10 for the withdrawal of hydrogen and a nozzle I1 for the withdrawal of alkali.
    The distribution chamber 12 is located below.
    During operation, a concentrated brine of 120-130 g / l of sodium chloride is supplied through the pipe 4 to the inside of the junction box 12, from where the brine rises to each of the cylindrical anodes 2 covered with valve metal, on which chlorine is formed. Sodium ions pass through the cation-exchange membrane 3 and combine with hydroxyl groups that occur on the cathode during the electrolysis of water, forming an alkali. Chlorine rises through the electrolyte contained inside the cylindrical anodes 2, and enters the chamber 6, where it is separated from the liquid and passed through the nozzle 5.
    0
    one
    five
    092
    The combined sodium chloride brine is discharged through port 7 of the reactor, from where it enters the system to re-saturate it, and then returns to the electrolyzer.
    The hydrogen that is formed at strip 9 rises up and exits through nipple 10.
    Due to the backfilling in the cathode space, the cation-exchange membrane is pressed tightly, which ensures a uniform distribution of current density over the entire surface of the ion-exchange membrane in order to prevent irreversible damage to the membrane itself, and also minimizes the distance between the electrodes to reduce the cell voltage.
    In all cases, the conditions for the test are as follows: anolyte NaCl 200 g / l, catholyte NaOH 16 wt.%, Temperature 75-85 ° C, pH (anolyte) 4-4.5, current density (above the anode surface) 3000 A / m .
    The results are shown in the table.
    thirty
    With balls from
    nickel 3.4
    With pressed nickel fibers 3.4
    With a gap for the nickel cathode (contrasted) 3.7
    84
    85
    85
    Thus, in the proposed electrolyzer, power consumption is reduced.
    2
    权利要求:
    Claims (1)
    [1]
    MONOPOLAR ELECTROLYZER for the electrolysis of alkali metal chlorides, including a casing with valve metal anodes, cation exchange membranes superimposed on them, cathodes, alkali metal chloride solution inlet pipes and alkali and chlorine output pipes, characterized in that, in order to reduce energy consumption and increase reliability electrolyzer, it is equipped with a backfill of cathode material in the form of balls, cylinders, rings, chip seats or metal fibers, placed in the entire space between the cathode and the membrane.
    C * CO
    SB with
    类似技术:
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    US4584080A|1986-04-22|Bipolar electrolysis apparatus with gas diffusion cathode
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    US4036717A|1977-07-19|Method for concentration and purification of a cell liquor in an electrolytic cell
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    US4204937A|1980-05-27|Novel electrolytic amalgam denuder apparatus
    US3364127A|1968-01-16|Method for producing caustic soda and chlorine by means of electrolysis of sea water or other similar saltish water
    SU729283A1|1980-04-25|Method of chlorine and caustic soda production
    US3311550A|1967-03-28|Cell for the electrolysis of aqueous solutions of hydrogen chloride
    同族专利:
    公开号 | 公开日
    NL7807036A|1979-01-03|
    JPS5417375A|1979-02-08|
    SE445562B|1986-06-30|
    DE2828621C2|1989-11-09|
    NL179926B|1986-07-01|
    SE8205353L|1982-09-20|
    GB2002032B|1982-07-14|
    DE2828621A1|1979-01-11|
    UA6325A1|1994-12-29|
    SE7805927L|1978-12-31|
    JPS57126984A|1982-08-06|
    SE8205353D0|1982-09-20|
    IT1114820B|1986-01-27|
    GB2002032A|1979-02-14|
    SE445471B|1986-06-23|
    NL179926C|1986-12-01|
    SE446104B|1986-08-11|
    JPS6053115B2|1985-11-22|
    JPH0153355B2|1989-11-14|
    CA1106312A|1981-08-04|
    JPS58756B2|1983-01-07|
    JPS59182984A|1984-10-17|
    SE8207131D0|1982-12-14|
    JPH0124867B2|1989-05-15|
    JPS6036683A|1985-02-25|
    SE8207131L|1982-12-14|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    GB1194181A|1966-05-24|1970-06-10|Nat Res Dev|Improvements relating to Electrode Arrangements for Electrochemical Cells.|
    US3674676A|1970-02-26|1972-07-04|Diamond Shamrock Corp|Expandable electrodes|
    DE2244244C3|1972-09-15|1981-07-02|Dart Industries Inc., 90048 Los Angeles, Calif.|Electrolytic process for removing a contaminant dissolved in an aqueous spent solution and regenerative electrolytic cell which can be used for this purpose|
    GB1423369A|1973-09-24|1976-02-04|Electricity Council|Electrolytic cells|
    DE2503652A1|1974-02-04|1975-08-07|Diamond Shamrock Corp|CELL FOR CHLORAL CALCIUM ELECTROLYSIS|
    GB1497542A|1974-05-30|1978-01-12|Parel Sa|Electrochemical apparatus|
    US3969201A|1975-01-13|1976-07-13|Canadian Patents And Development Limited|Electrolytic production of alkaline peroxide solutions|
    US3984303A|1975-07-02|1976-10-05|Diamond Shamrock Corporation|Membrane electrolytic cell with concentric electrodes|
    IT1114820B|1977-06-30|1986-01-27|Oronzio De Nora Impianti|ELECTROLYTIC MONOPOLAR MEMBRANE CELL|IT1114820B|1977-06-30|1986-01-27|Oronzio De Nora Impianti|ELECTROLYTIC MONOPOLAR MEMBRANE CELL|
    US4298447A|1980-03-07|1981-11-03|E. I. Du Pont De Nemours And Company|Cathode and cell for lowering hydrogen overvoltage in a chlor-akali cell|
    US4337127A|1980-03-07|1982-06-29|E. I. Du Pont De Nemours And Company|Method for making a cathode, and method for lowering hydrogen overvoltage in a chlor-alkali cell|
    JPH0242909B2|1982-08-30|1990-09-26|
    JPS59164976A|1983-03-10|1984-09-18|Fuji Electric Corp Res & Dev Ltd|Measurement of tritium concentration|
    JPS6241530U|1985-08-29|1987-03-12|
    JPH025830B2|1986-06-02|1990-02-06|Permelec Electrode Ltd|
    JPH01201225A|1988-02-04|1989-08-14|Nippon Patent Electric Kk|Floor surface grinder|
    JPH0611227U|1992-07-15|1994-02-10|東海ゴム工業株式会社|Metal laminated sheath cable|
    JP6314142B2|2012-09-21|2018-04-18|レオキシン ディスカバリーズ グループ，インコーポレイテッド|Cell for electrolyzing liquid|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    IT25251/77A|IT1114820B|1977-06-30|1977-06-30|ELECTROLYTIC MONOPOLAR MEMBRANE CELL|
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