CH255873A - Bipolar electrolyser. - Google Patents

Bipolar electrolyser.

Info

Publication number
CH255873A
CH255873A CH255873DA CH255873A CH 255873 A CH255873 A CH 255873A CH 255873D A CH255873D A CH 255873DA CH 255873 A CH255873 A CH 255873A
Authority
CH
Switzerland
Prior art keywords
channels
electrodes
gas
liquor
guide
Prior art date
Application number
Other languages
German (de)
Inventor
Oerlikon Maschinenfabrik
Original Assignee
Oerlikon Maschf
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Oerlikon Maschf filed Critical Oerlikon Maschf
Publication of CH255873A publication Critical patent/CH255873A/en

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25BELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B9/00Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
    • C25B9/17Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof
    • C25B9/19Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof with diaphragms

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Degasification And Air Bubble Elimination (AREA)

Description

  

      Zusatzpatent    zum     Haup@piatent    Nr.     242830.            Bipolar-Elektrolyseur.       Eist bekannt, die     Zellenspannung    bei       Bipolar-Elektrolyseuren    dadurch zu verbes  sern,     dass    die durch die aufsteigenden Gas  blasen entstehende     Zirkulation    in der Zelle       dureb.    Einbau von Leitkanälen erhöht wird.

         13f@on        ders    wirksam hat sich, eine Anordnung       nach    dem Patent Nr.     242830    gezeigt, bei       welcher    der Einbau von Leitblechen     zw2-          schen    V     orelektrodp        lind    Trennwand eine       Zirkulation.    quer zur     Längsachse    des     Elek-          ti olyscurs    bewirkt.  



       Erfindungsgemäss    kann diese Wirkung  dadurch verstärkt werden, dass zwischen     Vor-          elektrade    und Trennwand angeordnete     Gas-          auffanL hanäle    mit     Leitkanälen    abwechseln,  welche die entgaste Lauge nach unten füh  ren.     Vor7ugs,#veis:e    haben die Kanäle, welche       die        entgaste    Lauge na-eh unten führen,     tra-          pf,zfö        rmigen        Querschnitt    und reichen nicht  an die     Vorelektrode    heran.  



  Eine solche Zelle zeigt beispielsweise       Fig.    1 der beiliegenden schematischen     Zeich-          nun.in    Vorderansicht.     Fig.    2 und 3 zeigen  Schnitte nach der Linie A--4 bzw.     B-B     der F-. 1.. 1 ist der Zellenrahmen mit dem       Diaphragma    ?.

   3 sind die     Isolierdichtungen,     4 und 5 die Zellentrennwände, 6 und 7 die  Gasableitungen und 8 und 9 die     Vorelek-          froden.    11 sind Kanäle, die aus     trapezförmi-          gen        U-Schienen    hergestellt sind und die     ent-          hastc.    Lange nach unten weiterführen. Diese  Schienen bilden auch die Kanäle 11',     welche     die aufsteigende,     gashaltige    Lauge zu den         Gasa.bgängen    führen.

   Zwischen der     U-Schiene     und der     Vorelektrode    ist     zweckmässigerweise     ein Zwischenraum. Die Pfeile 12 geben die       Zirkulation    der Lauge durch die Kanäle 10  und 11 an. Die Pfeile 13     (Fib.    2) deuten die       Zirkulation    der Lauge durch die     Vorelek-          troden    an.  



  Die Steilheit der Kanäle kann derart  gewählt sein, dass die Kanäle im Grenzfall  vertikal stehen, ohne am Prinzip der Anord  nung zu ändern.



      Additional patent to the main patent No. 242830. Bipolar electrolyzer. It is known that the cell voltage in bipolar electrolysers can be improved by allowing the circulation in the cell to occur due to the rising gas bubbles. Installation of guide channels is increased.

         On the other hand, an arrangement according to patent no. 242830 has been shown to be effective, in which the installation of baffles between the front electrode and partition creates a circulation. caused transversely to the longitudinal axis of the electi olyscurs.



       According to the invention, this effect can be enhanced by the fact that gas collection ducts arranged between the pre-electrade and the partition wall alternate with guide ducts that guide the degassed liquor downwards. The channels that carry the degassed liquor downwards have at the bottom have a trailing, z-shaped cross-section and do not come close to the pre-electrode.



  Such a cell is shown, for example, in FIG. 1 of the accompanying schematic drawing in a front view. 2 and 3 show sections along the line A - 4 and B-B of the F -. 1 .. 1 is the cell frame with the diaphragm?

   3 are the insulating seals, 4 and 5 are the cell partition walls, 6 and 7 are the gas discharge lines and 8 and 9 are the pre-electrodes. 11 are channels that are made from trapezoidal U-rails and that entrap. Continue down for a long time. These rails also form the channels 11 ', which lead the rising, gaseous liquor to the gas passages.

   There is expediently a space between the U-rail and the pre-electrode. The arrows 12 indicate the circulation of the liquor through the channels 10 and 11. The arrows 13 (Fig. 2) indicate the circulation of the lye through the pre-electrodes.



  The steepness of the channels can be selected such that the channels are vertical in the borderline case without changing the principle of the arrangement.

 

Claims (1)

PATENTANSPRUCH: Bipola.r-Elektrolyseur mit perforierten Vore,lektroden, wobei zwischen den Vore,lek- troden und den Elektroden Auffangkanäle angeordnet sind, welche die aufsteigenden Gasblasensammeln und in Richtung der Gas- a.ustrittsöffnung der Zellen leiten, da=s Ganze derart, PATENT CLAIM: Bipola.r electrolyser with perforated front electrodes, with collecting channels being arranged between the front electrodes and the electrodes, which collect the rising gas bubbles and guide them towards the gas outlet opening of the cells, so the whole thing , dass eine Zirkulation des Elektrolyts quer zur Längsachse des Elektrolyseurs auf tritt und somit die infolge der Gasentwick lung entstehende Widerstandserhöhung der Zelle herabgesetzt wird, dadurch gekenn zeichnet, dass zwischen Vorelektrode und Trennwand angeordnete Gasa.uffangkanäl.e mit Leitkanälen abwechseln, welche die ent gaste Lauge nach unten führen. that a circulation of the electrolyte occurs transversely to the longitudinal axis of the electrolyzer and thus the increase in resistance of the cell resulting from the development of gas is reduced, characterized in that gas catch ducts arranged between the pre-electrode and the partition alternate with guide ducts that carry the degassed liquor lead down. UNTERANSPRüCHE 1. Bipolar-Elektrolyseur nach Patentan spruch, dadurch gekennzeichnet, dass die Ka näle trapezförmigen Querschnitt aufweisen, w obei die Kanäle für die Rückführung der entgasten Lauge auf der Trennwandseite breiter und auf der Elektrodenseite schmä- ler sind. SUBClaims 1. Bipolar electrolyser according to patent claim, characterized in that the channels have a trapezoidal cross-section, whereby the channels for the return of the degassed liquor are wider on the partition wall side and narrower on the electrode side. z. Bipolar-Elektrolyseur nach Patent anspruch, dadurch gekennzeichnet, dass die Kanäle für die Rückführung der entgasten Lauge nicht an die Vorelektroden heran reichen. z. Bipolar electrolyser according to patent claim, characterized in that the channels for the return of the degassed liquor do not reach up to the pre-electrodes.
CH255873D 1946-12-13 1946-12-13 Bipolar electrolyser. CH255873A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH255873T 1946-12-13
CH242830T 1946-12-13

Publications (1)

Publication Number Publication Date
CH255873A true CH255873A (en) 1948-07-15

Family

ID=25728727

Family Applications (1)

Application Number Title Priority Date Filing Date
CH255873D CH255873A (en) 1946-12-13 1946-12-13 Bipolar electrolyser.

Country Status (1)

Country Link
CH (1) CH255873A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4417960A (en) * 1979-11-29 1983-11-29 Oronzio De Nora Impianti Elettrochimici S.P.A. Novel electrolyzer and process

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4417960A (en) * 1979-11-29 1983-11-29 Oronzio De Nora Impianti Elettrochimici S.P.A. Novel electrolyzer and process

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