EP0144621A2 - Cellule électrolytique pour l'électrolyse d'électrolyte agueux contenant des halogénures - Google Patents

Cellule électrolytique pour l'électrolyse d'électrolyte agueux contenant des halogénures Download PDF

Info

Publication number
EP0144621A2
EP0144621A2 EP84112145A EP84112145A EP0144621A2 EP 0144621 A2 EP0144621 A2 EP 0144621A2 EP 84112145 A EP84112145 A EP 84112145A EP 84112145 A EP84112145 A EP 84112145A EP 0144621 A2 EP0144621 A2 EP 0144621A2
Authority
EP
European Patent Office
Prior art keywords
units
current
electrolytic cell
sub
unit
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP84112145A
Other languages
German (de)
English (en)
Other versions
EP0144621A3 (fr
Inventor
Helmuth Dipl.-Ing. Schurig
Helmut Ing.(Grad.) Schmitt
Bernd Dr. Dipl.-Ing. Strasser
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ThyssenKrupp Industrial Solutions AG
Original Assignee
Uhde GmbH
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 Uhde GmbH filed Critical Uhde GmbH
Publication of EP0144621A2 publication Critical patent/EP0144621A2/fr
Publication of EP0144621A3 publication Critical patent/EP0144621A3/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
    • C25B9/60—Constructional parts of cells
    • C25B9/65—Means for supplying current; Electrode connections; Electric inter-cell connections
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
    • C25B9/70—Assemblies comprising two or more cells
    • C25B9/73—Assemblies comprising two or more cells of the filter-press type
    • C25B9/77—Assemblies comprising two or more cells of the filter-press type having diaphragms

Definitions

  • the invention relates to an electrolytic cell for the electrolysis of aqueous halegonide-containing electrolyte with monopolar start and end units and respective current guiding elements between busbars and start or end units and with a multiplicity of bipolar electrode units, each with an anodic and cathodic sub-element as an electrode pair in aligned, connected Arrangement, wherein the anode sub-element and the cathode sub-element are electrically conductively connected at their ends to their active length by means of a bipolar current-carrying element.
  • Electrolytic cells of this type are used to produce an aqueous alkali metal hydroxide solution (cell liquid), halogen and hydrogen from the electrolyte. In particular, these cells are used for the electrolysis of sodium chloride solutions.
  • An electrolysis cell is known from DE-OS 30 25 662, which consists of a plurality of anode and cathode sub-elements and in which an anode and a cathode sub-element are connected in alignment. The connection is made via a bipolar unit that hangs on the vertical frame rails of the anodic sub-element and the adjacent cathodic sub-element. According to the prior art, the bipolar unit, also referred to as the bipolar element, is in contact with the anodic and cathodic sub-elements.
  • FIG. 10 of DE-OS 30 25 662 shows in section the bipolar unit 3 different materials such as titanium or rectifier metal, copper and iron or steel as a strip material.
  • connection or creation of the necessary contact is not disclosed. It is known that copper and titanium or rectifier metal cannot be connected thermally, for example by welding, but only mechanically. However, a mechanical connection is never complete and there is always the risk of contact corrosion. In addition, every mechanical connection is expensive.
  • an electrolysis cell in which the anodes and cathodes are also connected to one another in an electrically conductive manner in an aligned arrangement, specifically via a bipolar electrical connection.
  • anodes and cathodes can be screwed, soldered or welded, but no teaching is given as to how this should be done with per se non-weldable metals.
  • only a screwed connection is listed, with a projecting flange on each electrode, the flanges having to overlap.
  • Such screw connections only create a locally limited contact area in the area of the screw connection and leave areas in the remaining gap area of the double flange areas free for the formation of corrosion products which prevent perfect electrical current conduction.
  • the object of the invention is to connect longitudinally aligned anode and cathode sub-elements of the described electrolytic cell to one another in an electrically conductive manner over their entire active length.
  • a current-carrying element which is a bimetallic unit which is produced by plastic deformation in the contact area of the two metals, and the Bimetal unit is electrically conductively connected in a known manner to the start and end units and to the respective two aligned partial elements.
  • the advantages achieved by the invention are, in particular, that the various elements of the electrolytic cell can be connected in an electrically conductive manner over the entire available area, without leaving gap contacts in which corrosion can occur. This avoids loss of power due to poor contact surfaces. Corrosion is avoided due to the lack of contact gaps. The cost of materials is also minimal, since material duplications such as flanges etc. and screws are not required for these flange connections.
  • the disadvantages of previously known electrolytic cells are completely eliminated and even completely new advantages are obtained. In this way, the electrolytic cell can be made even flatter.
  • the subsequent cell elements can be thermally connected without any problems, i.e. Weld what is the best metallic connection.
  • the pair of electrodes in FIGS. 1 and 2 consists of the anode 1, the cathode 2 and the bimetal unit 3.
  • the bimetal unit 3 with the contact area 4 was obtained by, for example, explosive plating of anode material 5 on cathode material 6.
  • the bimetal strip 3 used was obtained from a bimetal plate that was cut into strips.
  • the bimetallic unit with the anode material 5 made of titanium or rectifier metal and the cathode material & made of steel, stainless steel or nickel is welded on one side to the anode and on the other side to the cathode, so that an intimate, purely metallic contact is obtained .
  • the welding process used is not the subject of the property right request.
  • the membrane 7 is a separator between the anode surface and the cathode surface.
  • the bimetal unit 3 can also be welded on transversely for the purpose of good current distribution.
  • a multiplicity of bipolar electrode units so-called electrode pairs, are constructed together with the corresponding start and end electrodes within a module-membrane electrolysis cell.
  • the current is fed to the anodes 1 via the busbar 6.
  • the electrical current flows through the membrane 7 into the cathode 2, and then via the bimetal unit 3 into the next anode reach.
  • a large number of electrode pairs, offset in the current flow direction, each separated by a membrane, are arranged one behind the other inside the cell.
  • the electrical current is passed to the next module membrane electrolysis cell via the cathode 2 and busbar 9. '
  • the starting or end unit which is either anode 1 or cathode 2, has a direct contact via the bimetal unit anode 10 or bimetal unit cathode 11 to the busbar 8, 9 according to FIGS. 5, 6.
  • the bimetal unit anode 10 consists of titanium or rectifier metal and copper
  • the bimetal unit cathode 11 consists of steel, stainless steel or nickel and copper. They are connected along their entire length to the material-identical anode or cathode by means of welding processes. This type of connection is so good that there is no increase in resistance.
  • the connection of the bimetallic unit anode 10 or bimetallic unit cathode 11 to the respective busbar 8 or 9 must be detachable and flexible and is therefore carried out in a known manner via copper flexible strips 12 and screw connections 13.
  • a plurality of anodes or cathodes can be connected to a busbar at the beginning or end of the cell unit.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
EP84112145A 1983-11-24 1984-10-10 Cellule électrolytique pour l'électrolyse d'électrolyte agueux contenant des halogénures Withdrawn EP0144621A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3342449 1983-11-24
DE19833342449 DE3342449A1 (de) 1983-11-24 1983-11-24 Elektrolytische zelle fuer die elektrolyse von waessrigem halogenidhaltigem elektrolyt

Publications (2)

Publication Number Publication Date
EP0144621A2 true EP0144621A2 (fr) 1985-06-19
EP0144621A3 EP0144621A3 (fr) 1985-07-10

Family

ID=6215119

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84112145A Withdrawn EP0144621A3 (fr) 1983-11-24 1984-10-10 Cellule électrolytique pour l'électrolyse d'électrolyte agueux contenant des halogénures

Country Status (2)

Country Link
EP (1) EP0144621A3 (fr)
DE (1) DE3342449A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0343274A1 (fr) * 1988-05-26 1989-11-29 Hundt & Weber Schaltgeräte GmbH Interrupteur de courant fort, en particulier pour un environnement agressif tel qu'un court-circuiteur pour les installations d'électrolyses

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1270675A (fr) * 1960-07-22 1961-09-01 Electrochimie Soc Perfectionnement aux amenées de courant solides en contact avec l'aluminium liquide dans les cuves d'électrolyse
GB1006396A (en) * 1964-06-09 1965-09-29 Ici Ltd Electrical conductor
DE2148337A1 (de) * 1971-09-28 1973-04-05 Uhde Gmbh Friedrich Bipolare mehrfach-elektrolysezelle mit diaphragma
BE793282A (fr) * 1971-12-23 1973-06-22 Rhone Progil Perfectionnements aux cellules electrolytiques a diaphragmes
US3900384A (en) * 1972-11-24 1975-08-19 Ppg Industries Inc Method of assembling a bipolar electrode having friction welded conductor/connector means and bipolar electrode formed thereby
US3813326A (en) * 1972-11-24 1974-05-28 Ppg Industries Inc Bipolar electrolytic diaphragm cell having friction welded conductor/connector means
US3895210A (en) * 1973-06-11 1975-07-15 Diamond Shamrock Corp Apparatus for forming a dimensionally stable anode
DE2349151A1 (de) * 1973-09-29 1975-04-10 Vaw Ver Aluminium Werke Ag Vorrichtung zum verbinden von stromschienen aus aluminium oder kupfer mit stromleitern aus stahl bei vorzugsweise aluminiumelektrolyseoefen
US3902985A (en) * 1973-11-30 1975-09-02 Ppg Industries Inc Alakali metal chlorate cell having metal bipolar electrodes
JPS5232866B2 (fr) * 1974-10-09 1977-08-24
GB1522622A (en) * 1975-01-30 1978-08-23 Ici Ltd Electrolytic cells
CA1067573A (fr) * 1975-03-17 1979-12-04 Theodore R. Beatty Joints d'etancheite pour dispositifs electrochimiques alcalins
US4055291A (en) * 1975-12-15 1977-10-25 Diamond Shamrock Corporation Explosion bonding of bipolar electrode backplates
US4137144A (en) * 1976-03-19 1979-01-30 Hooker Chemicals & Plastics Corp. Hollow bipolar electrolytic cell anode-cathode connecting device
US4217199A (en) * 1979-07-10 1980-08-12 Ppg Industries, Inc. Electrolytic cell
DE3239535C2 (de) * 1982-10-26 1987-02-05 Heraeus Elektroden GmbH, 6450 Hanau Verfahren zur Herstellung einer bipolaren Elektrode

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0343274A1 (fr) * 1988-05-26 1989-11-29 Hundt & Weber Schaltgeräte GmbH Interrupteur de courant fort, en particulier pour un environnement agressif tel qu'un court-circuiteur pour les installations d'électrolyses

Also Published As

Publication number Publication date
DE3342449A1 (de) 1985-06-05
EP0144621A3 (fr) 1985-07-10

Similar Documents

Publication Publication Date Title
DD243516A5 (de) Monopolare und bipolara chlorzellen und elektrodenstrukturen fuer diese
DE2735239C2 (de) Monopolare Membran- oder Diaphragmaelektrolysezelle
DE2262173C3 (fr)
EP0189535A1 (fr) Appareil d'électrolyse
DE3025662A1 (de) Elektrolytische zelle
DE2821984A1 (de) Elektrodenelement fuer monopolare elektrolysezellen
DE69007205T2 (de) Rahmen für Elektrolyseur der Filterpressenbauart und monopolarer Elektrolyseur der Filterpressenbauart.
CH635369A5 (de) Bipolare elektrode und verfahren zu deren herstellung.
DE2538000B2 (de) Bipolare Elektrodenkonstruktion für eine membranlose Elektrolysezelle
DE2022696C3 (de) Elektrolysezelle zur Herstellung von Adipinsäuredinitril
DE69405047T2 (de) Elektrolyseur
DE2448187A1 (de) Elektrolysezelle
DE2357550B2 (de) Bipolare Elektrolysiervorrichtung
DE2923818A1 (de) Elektrodenabteil
DE1592012A1 (de) Verbesserungen an Elektrolyse-Diaphragmazellen
DE2125941C3 (de) Bipolare Einheit und damit aufgebaute elektrolytische Zelle
DE3406797C2 (de) Beschichtete Ventilmetallanode zur elektrolytischen Gewinnung von Metallen oder Metalloxiden
DE2909640A1 (de) Elektrolyseapparat
EP0144621A2 (fr) Cellule électrolytique pour l'électrolyse d'électrolyte agueux contenant des halogénures
DE4241485C1 (de) Kathode zum galvanischen Abscheiden von Kupfer und Verfahren zu ihrer Herstellung
DE2653538C3 (de) Elektrolytische Diaphragma-Zelle und Verfahren zu ihrer Montage
DE2821979A1 (de) Elektrolysezellen-anlage
DE19959079A1 (de) Elektrochemische Zelle für Elektrolyseure mit Einzelelementtechnik
DE69203267T2 (de) Elektrischer Leiter, Verfahren zur Herstellung eines elektrischen Leiters und Elektrode für Elektrolysezelle.
DE3406777C2 (de) Beschichtete Ventilmetallanode zur elektrolytischen Gewinnung von Metallen oder Metalloxiden

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Designated state(s): BE DE FR GB IT NL SE

AK Designated contracting states

Designated state(s): BE DE FR GB IT NL SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19860311

RIN1 Information on inventor provided before grant (corrected)

Inventor name: SCHMITT, HELMUT, ING.(GRAD.)

Inventor name: STRASSER, BERND, DR., DIPL.-ING.

Inventor name: SCHURIG, HELMUTH, DIPL.-ING.