EP0095039A2 - Membrane-electrolysis cell - Google Patents

Membrane-electrolysis cell Download PDF

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Publication number
EP0095039A2
EP0095039A2 EP83103915A EP83103915A EP0095039A2 EP 0095039 A2 EP0095039 A2 EP 0095039A2 EP 83103915 A EP83103915 A EP 83103915A EP 83103915 A EP83103915 A EP 83103915A EP 0095039 A2 EP0095039 A2 EP 0095039A2
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EP
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Prior art keywords
membrane
electrode
edge
bars
pairs
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EP83103915A
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German (de)
French (fr)
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EP0095039B1 (en
EP0095039A3 (en
Inventor
Helmut Ing. Schmitt (Grad.)
Helmuth Dipl.-Ing. Schurig
Wolfgang Dr. Strewe
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ThyssenKrupp Industrial Solutions AG
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Uhde GmbH
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    • 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
    • C25B11/00—Electrodes; Manufacture thereof not otherwise provided for
    • C25B11/02—Electrodes; Manufacture thereof not otherwise provided for characterised by shape or form
    • 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

Definitions

  • the invention relates to a membrane electrolysis cell of the filter press type with pairs of planar electrodes, each containing at least one perforated active central part, with a membrane arranged between the pairs of electrodes and a seal lying between the electrode edge and the membrane edge.
  • the electrolysis cell is suitable for the electrolysis of an aqueous, halide-containing electrolyte (brine) in order to produce an aqueous alkali metal hydroxide solution (cell liquid) and halogen and hydrogen.
  • electrolysis cell is already known from DE-OS 28 09 332.
  • the electrolysis cell of the filter press type described there consists of a plurality of vertically and alternately arranged flexible anode and cathode plates, each with a membrane permeable to cations installed between adjacent anode and cathode plates.
  • Anode plates, membrane and cathode plates are fixed in their distance from each other by means of non-conductive, flexible spacer plates.
  • the thickness of the spacer plates which are either covered with sealing material or even consist of almost incompressible sealing material, is chosen so that the membrane is free between anode plates and cathode plates.
  • anode or cathode plates are thin, ie do not have high surface stability, their distance across the active surface from the membrane is different. This peculiarity has the consequence that the distance from the anode plate to the cathode plate is also different and this results in a different surface load (loss of voltage, electrochemical efficiency). In addition, it is difficult to stretch the membrane completely smooth from the edges of the cell. To the possibly wavy anode or In addition, cathode plates can then add a membrane with incomplete flatness, ie there are no clearly uniform distances and thus conditions in the space between the anode and cathode plates.
  • the object of the invention is to create a monopolar filter press cell which has improved properties compared to known filter press cells.
  • the invention relates to a membrane electrolysis cell of the filter press type with pairs of planar electrodes, each containing at least one perforated active central part, with a membrane arranged between the paired electrodes and a seal lying between the electrode edge and the membrane edge, which is characterized in that the perforated central part of an electrode has a grid-like structure, the bars of the electrodes assigned in pairs by max. half a rod width are offset from one another, the lattice rods have a convex curvature at least on the active side and the thickness of the seal between the electrode edge and the membrane edge is equal to or less than the height of the lattice rod portion projecting over the electrode edge.
  • both seals between an electrode edge and a membrane edge can be combined to form a seal. This then results in a seal between only one membrane edge and one electrode edge of a paired electrode in the same or less thickness than twice the height of the portion of the lattice rod projecting beyond the electrode edge. In this way, the number of parts of the membrane electrolytic cell of the filter press type can be reduced and thus at the same time the number of sealing surfaces and any leakage points.
  • the grid bars are punched out and shaped on the electrode sheet.
  • the bars on the side of the convex curvature have a large number of transverse indentations.
  • the advantages achieved by the invention are, in particular, that the distance between the electrode plates and the membrane becomes zero, and that the voltage loss in the complete electrolysis cell system is thus substantially reduced. It is not necessary, as previously, to provide complex support structures so that the membrane is tensioned smoothly and remains in operation.
  • the elimination of components for the support structure improves the gas extraction from the cells and at the same time reduces the overall length of each individual electrolysis cell.
  • the convex design of the bars on the side facing the membrane and their displacement by max. half a rod width also has the advantage that the distance between the rods between the anode plates and the cathode plates is constant in the convex region and thus a high effective electrode area is available.
  • the bars of the electrode plates can also have any shape on the side facing away from the active side, too they can be welded or otherwise attached to the frame of the electrode plate.
  • the decisive factors for the final design are the choice of materials, manufacturing costs and voltage loss in the electrolysis cell.
  • the electrode plates, anode and cathode are made of a material or coated according to the prior art.
  • the seals used also correspond to the state of the art in terms of design and material.
  • the end plates of the electrolytic cell and the required anchor bolts are designed in a known manner. So-called flags on each electrode plate are used for power supply and discharge.
  • the inventions are particularly suitable for membrane cells used for the production of chlorine and sodium hydroxide by electrolysis of aqueous sodium chloride solutions.
  • the unit shown in Figure 1 consists of the anode plate 1 and the cathode plate 2 in a completely identical design, from the membrane 3 between the plates and from the seals 4 for clamping the membrane and the seals 5 with insert 6 for dimensional stability and 'with the Openings 7 for different reaction media.
  • the reaction medium between two electrode packs in a mixture with product media such as hydrogen and chlorine gas is not affected by the optimal distribution concentration by any support structure elements.
  • the structure of the electrolysis cell can be seen.
  • the gaseous product media escape upwards from the louvre-like lattice bars 8, which can also be designed as slats.
  • the membrane 3, made of commercially available material, is fixed in a known manner with the seal 4, so that it is tensioned between the electrode plates according to the invention after installation of the second electrode plate.
  • the bars can also be slats according to FIG. 3 of different shapes. It is essential that the side facing the membrane is designed according to the invention and the offset of the bars on each electrode plate is max. is half a bar width.

Abstract

Die Erfindung betrifft eine Membran-Elektrolysezelle vom Filterpressentyp mit paarweise flächenhaften Elektroden, die je mindestens einen durchbrochenen aktiven Mittelteil enthalten, mit einer zwischen den paarweisen Elektroden angeordneten Membran und jeweils zwischen Elektrodenrand liegender Dichtung. Die Elektrolysezelle ist geeignet für die Elektrolyse eines wässrigen, halogenidhaltigen Elektrolyts (Sole), um eine wässrige Alkalimetallhydroxidlösung (Zellenflüssigkeit) und Halogen und Wasserstoff herzustellen. Der durchbrochene Mittelteil einer Elektrode weist einen gitterähnlichen Aufbau auf, die Gitterstäbe der paarweise zugeordneten Elektroden sind um max. eine halbe Stabbreite gegeneinander versetzt, die Gitterstäbe haben mindestens an der Aktivseite eine konvexe Wölbung und die Dicke der Dichtung zwischen Elektrodenrand und Membranran ist gleich oder geringer als die Höhe des über den Elektrodenrand ragenden Gitterstabanteils.The invention relates to a membrane electrolysis cell of the filter press type with pairs of planar electrodes, each containing at least one perforated active central part, with a membrane arranged between the pairs of electrodes and a seal lying between the electrode edge. The electrolysis cell is suitable for the electrolysis of an aqueous, halide-containing electrolyte (brine) in order to produce an aqueous alkali metal hydroxide solution (cell liquid) and halogen and hydrogen. The perforated middle part of an electrode has a grid-like structure, the grid bars of the electrodes assigned in pairs are max. half a rod width offset from one another, the grid rods have a convex curvature at least on the active side and the thickness of the seal between the electrode edge and the membrane edge is equal to or less than the height of the proportion of the grid rod projecting beyond the electrode edge.

Description

Die Erfindung betrifft eine Membran-Elektrolysezelle vom Filterpressentyp mit paarweise flächenhaften Elektroden, die je mindestens einen durchbrochenen aktiven Mittelteil enthalten, mit einer zwischen den paarweisen Elektroden angeordneten Membran und jeweils zwischen Elektrodenrand und Membranrand liegender Dichtung. Die Elektrolysezelle ist geeignet für die Elektrolyse eines wässrigen, halogenidhaltigen Elektrolyts (Sole), um eine wässrige Alkalymetallhydroxidlösung ( Zellenflüssigkeit) und Halogen und Wasserstoff herzustellen.The invention relates to a membrane electrolysis cell of the filter press type with pairs of planar electrodes, each containing at least one perforated active central part, with a membrane arranged between the pairs of electrodes and a seal lying between the electrode edge and the membrane edge. The electrolysis cell is suitable for the electrolysis of an aqueous, halide-containing electrolyte (brine) in order to produce an aqueous alkali metal hydroxide solution (cell liquid) and halogen and hydrogen.

Eine solche Elektrolysezelle ist bereits bekannt aus der DE-OS 28 09 332. Die dort beschriebene Elektrolysezelle vom Filterpressentyp besteht aus einer Vielzahl vertikal und abwechselnd angeordneter flexibler Anoden- und Kathodenplatten mit jeweils zwischen benachbarten Anoden- und Kathodenplatten eingebauter, für Kationen durchlässiger Membran. Anodenplatten, Membran und Kathodenplatten werden mittels nichtleitenden, flexiblen Abstandsplatten in ihrem Abstand zueinander fixiert. Die Dicke der Abstandsplatten, die entweder mit Dichtungsmaterial belegt sind oder selbst aus fast unkompressiblem Dichtungsmaterial bestehen, ist so gewählt, daß die Membran frei zwischen Anodenplatten und Kathodenplatten sich befindet. Da die Anoden- bzw. Kathodenplatten dünn sind, d.h. keine hohe Flächenstabilität besitzen, ist ihr Abstand über die aktive Fläche zur Membran unterschiedlich. Diese Eigenart hat zur Folge, daß der Abstand von Anodenplatte zu Kathodenplatte ebenfalls unterschiedlich ist und sich hieraus eine unterschiedliche Flächenbelastung (Spannungsverlust, elektrochemischer Wirkungsgrad) ergibt. Darüber hinaus ist es schwierig, die Membran von den Rändern der Zelle her vollkommen glatt zu spannen. Zu den eventuell welligen Anoden- bzw. Kathodenplatten kann dann noch additiv eine Membran mit nicht völliger Ebenheit kommen, d.h. im Raum zwischen Anoden- und Kathodenplatten liegen keine eindeutig gleichmäßigen Abstände und damit Verhältnisse vor..Such an electrolysis cell is already known from DE-OS 28 09 332. The electrolysis cell of the filter press type described there consists of a plurality of vertically and alternately arranged flexible anode and cathode plates, each with a membrane permeable to cations installed between adjacent anode and cathode plates. Anode plates, membrane and cathode plates are fixed in their distance from each other by means of non-conductive, flexible spacer plates. The thickness of the spacer plates, which are either covered with sealing material or even consist of almost incompressible sealing material, is chosen so that the membrane is free between anode plates and cathode plates. Since the anode or cathode plates are thin, ie do not have high surface stability, their distance across the active surface from the membrane is different. This peculiarity has the consequence that the distance from the anode plate to the cathode plate is also different and this results in a different surface load (loss of voltage, electrochemical efficiency). In addition, it is difficult to stretch the membrane completely smooth from the edges of the cell. To the possibly wavy anode or In addition, cathode plates can then add a membrane with incomplete flatness, ie there are no clearly uniform distances and thus conditions in the space between the anode and cathode plates.

'Der Erfindung liegt die Aufgabe zugrunde, eine monopolare Filterpressenzelle zu schaffen, die verbesserte Eigenschaften aufweist, gegenüber bekannten Filterpressenzellen.The object of the invention is to create a monopolar filter press cell which has improved properties compared to known filter press cells.

Gegenstand der Erfindung ist eine Membran-Elektrolysezelle vom Filterpressentyp mit paarweise flächenhaften Elektroden, die je mindestens einen durchbrochenen aktiven Mitteilteil enthalten, mit zwischen den paarweisen Elektroden angeordneter Membran und jeweils zwischen Elektrodenrand und Membranrand liegender Dichtung die sich dadurch auszeichnet, daß der durchbrochene Mittelteil einer Elektrode einen gitterähnlichen Aufbau aufweist, die Gitterstäbe der paarweise zugeordneten Elektroden um max. eine halbe Stabbreite gegeneinander versetzt sind, die Gitterstäbe mindestens an der Aktivseite eine konvexe Wölbung haben und die Dicke der Dichtung zwischen Elektrodenrand und Membranrand gleich oder geringer ist als die Höhe des über den Elektrodenrand ragenden Gitterstabanteils.The invention relates to a membrane electrolysis cell of the filter press type with pairs of planar electrodes, each containing at least one perforated active central part, with a membrane arranged between the paired electrodes and a seal lying between the electrode edge and the membrane edge, which is characterized in that the perforated central part of an electrode has a grid-like structure, the bars of the electrodes assigned in pairs by max. half a rod width are offset from one another, the lattice rods have a convex curvature at least on the active side and the thickness of the seal between the electrode edge and the membrane edge is equal to or less than the height of the lattice rod portion projecting over the electrode edge.

Da die Membran selbst als Dichtung wirkt, können in einer Abwandlung der Erfindung auch beide Dichtungen zwischen jeweils einem Elektrodenrand und einem Membranrand zu einer Dichtung zusammengefaßt werden. Danach ergibt sich dann eine Dichtung zwischen nur einem Membranrand und einem Elektrodenrand einer paarweisen Elektrode in der gleichen oder geringeren Dicke als die doppelte Höhe.des über den Elektrodenrand ragenden Gitterstabanteils. Auf diese Weise läßt sich die Anzahl der Teile der Membran-Elektrolysezelle vom Filterpressentyp mindern und damit gleichzeitig die Anzahl der Dichtflächen und evtl. Leckagestellen.Since the membrane itself acts as a seal, in a modification of the invention both seals between an electrode edge and a membrane edge can be combined to form a seal. This then results in a seal between only one membrane edge and one electrode edge of a paired electrode in the same or less thickness than twice the height of the portion of the lattice rod projecting beyond the electrode edge. In this way, the number of parts of the membrane electrolytic cell of the filter press type can be reduced and thus at the same time the number of sealing surfaces and any leakage points.

Nach einer Ausgestaltung der Erfindung sind die Gitterstäbe auf dem Elektrodenblech ausgestanzt und geformt.According to one embodiment of the invention, the grid bars are punched out and shaped on the electrode sheet.

Um das sich bildende Elektrolyseprodukt, wie z.B. H2-Gas und Chlor, sicher nach oben abzuführen, weisen die Gitterstäbe an der Seite der konvexen Wölbung eine Vielzahl von Quereinbuchtungen auf.To form the electrolysis product, e.g. H2 gas and chlorine, safely discharged upwards, the bars on the side of the convex curvature have a large number of transverse indentations.

Die mit der Erfindung erzielten Vorteile bestehen insbesondere darin, daß der Abstand der Elektrodenplatten zur Membran zu Null wird, und daß damit der Spannungsverlust in der vollständigen Elektrolysenzellenanlage wesentlich gemindert wird. Es ist nicht wie bisher erforderlich, aufwendige Stützkonstruktionen vorzusehen, damit die.Membran glatt gespannt wird und im Betrieb auch bleibt..The advantages achieved by the invention are, in particular, that the distance between the electrode plates and the membrane becomes zero, and that the voltage loss in the complete electrolysis cell system is thus substantially reduced. It is not necessary, as previously, to provide complex support structures so that the membrane is tensioned smoothly and remains in operation.

Durch den Wegfall von Bauelementen für die Stützkonstruktion wird einerseits der Gasabzug aus den Zellen verbessert und gleichzeitig die Baulänge jeder einzelnen Elektrolysezelle gemindert.The elimination of components for the support structure improves the gas extraction from the cells and at the same time reduces the overall length of each individual electrolysis cell.

Die konvexe Gestaltung der Gitterstäbe auf der der Membran zugewandten Seite und ihre Versetzung um max. eine halbe Stabbreite hat weiterhin den Vorteil, daß der Abstand der Stäbe zwischen Anodenplatten und Kathodenplatten im konvexen Bereich konstant ist und somit eine hohe wirksame Elektrodenfläche zur Verfügung steht.The convex design of the bars on the side facing the membrane and their displacement by max. half a rod width also has the advantage that the distance between the rods between the anode plates and the cathode plates is constant in the convex region and thus a high effective electrode area is available.

Die Gitterstäbe der Elektrodenplatten können im übrigen an der der aktiven Seite abgewandten Seite jegliche Form haben, auch können sie auf den Rahmen der Elektrodenplatte aufgeschweißt oder anderweitig befestigt sein. Ausschlaggebend für die endgültige Ausgestaltung sind letztlich Materialwahl, Herstellungskosten und Spannungsverlust in der Elektrolysezelle.The bars of the electrode plates can also have any shape on the side facing away from the active side, too they can be welded or otherwise attached to the frame of the electrode plate. Ultimately, the decisive factors for the final design are the choice of materials, manufacturing costs and voltage loss in the electrolysis cell.

Die Elektrodenplatten, Anode sowie Kathode sind aus einem Material hergestellt bzw. beschichtet gemäß dem Stand der Technik. Die verwendeten Dichtungen entsprechen ebenfalls nach Ausbildung und Material dem Stand der Technik. Die Endplatten der Elektrolysezelle und die erforderlichen Spannanker sind in bekannter Weise ausgeführt. Zur Stromzufuhr und Stromableitung dienen sogenannte Fahnen an jeder Elektrodenplatte.The electrode plates, anode and cathode are made of a material or coated according to the prior art. The seals used also correspond to the state of the art in terms of design and material. The end plates of the electrolytic cell and the required anchor bolts are designed in a known manner. So-called flags on each electrode plate are used for power supply and discharge.

Die Erfindungen eignen sich besonders für Membranzellen, die für die Herstellung von Chlor und Natriumhydroxid durch Elektrolyse von wässrigen Natriumchloridlösungen verwendet.The inventions are particularly suitable for membrane cells used for the production of chlorine and sodium hydroxide by electrolysis of aqueous sodium chloride solutions.

Die Erfindung wird anhand der beigefügten Zeichnungen näher erläutert. In den Zeichnungen zeigen:

  • Figur 1: Schnitt einer Anodenplatte-Membran-Kathodenplatten-Einheit im Betriebszustand,
  • Figur 2: Schnitt einer Anodenplatte-Membran-Kathodenplatten-Einheit im Betriebszustand mit nur einer Dichtung zum Festklemmen der Membran.
  • Figur 3: perspektivische auseinandergezogene Darstellung eines Teils einer erfindungsgemäßen Membr'anzeile,
  • Figur 4: Elektrodenplatte mit verschieden geformten bzw. befestigten Gitterstäben.
The invention is explained in more detail with reference to the accompanying drawings. The drawings show:
  • FIG. 1: section of an anode plate-membrane-cathode plate unit in the operating state,
  • Figure 2: Section of an anode plate-membrane-cathode plate unit in the operating state with only one seal for clamping the membrane.
  • FIG. 3: perspective exploded view of part of a membrane line according to the invention,
  • Figure 4: Electrode plate with differently shaped or fastened bars.

Die in Figur 1 dargestellte Einheit besteht aus der Anodenplatte 1 und der Kathodenplatte 2 in vollkommen gleicher konstruktiver Ausgestaltung, aus der Membran 3 zwischen den Platten und aus den Dichtungen 4 zum Festklemmen der Membran und den Dichtungen 5 mit Einlage 6 für Formstabilität und'mit den Öffnungen 7 für verschiedene Reaktionsmedien. Das jeweils zwischen 2 Elektrodenpaketen befindliche Reaktionsmedium im Gemisch mit Produktmedien wie Wasserstoff und Chlorgas erfährt keine Beeinträchtigung der optimalen Verteilungskonzentration durch irgendwelche Stütztkonstruktionselemente.The unit shown in Figure 1 consists of the anode plate 1 and the cathode plate 2 in a completely identical design, from the membrane 3 between the plates and from the seals 4 for clamping the membrane and the seals 5 with insert 6 for dimensional stability and 'with the Openings 7 for different reaction media. The reaction medium between two electrode packs in a mixture with product media such as hydrogen and chlorine gas is not affected by the optimal distribution concentration by any support structure elements.

Gemäß der perspektivischen Darstellung nach Figur 2 ist der Aufbau der Elektrolysezelle zu erkennen. Aus den jalousieartig gestellten Gitterstäben 8, die auch als Lamellen gestaltet sein können, entweichen die gasförmigen Produktmedien störungsfrei nach oben. Die Membran 3, aus handelüblichem Material hergestellt, wird in bekannter Weise mit der Dichtung 4 befestigt, so daß sie nach Einbau der zweiten Elektrodenplatte erfindungsgemäß zwischen den Elektrodenplatten gespannt ist.According to the perspective view according to FIG. 2, the structure of the electrolysis cell can be seen. The gaseous product media escape upwards from the louvre-like lattice bars 8, which can also be designed as slats. The membrane 3, made of commercially available material, is fixed in a known manner with the seal 4, so that it is tensioned between the electrode plates according to the invention after installation of the second electrode plate.

Sollten fertigungstechnische Vorteile bestehen, können die Gitterstäbe auch Lamellen gemäß Figur 3 von verschiedener Form sein. Wesentlich ist, daß die der Membran zugewandte Seite erfindungsgemäß ausgestaltet ist und der Versatz der Gitterstäbe auf jeder Elektrodenplatte max. eine halbe Stabbreite beträgt.If there are manufacturing advantages, the bars can also be slats according to FIG. 3 of different shapes. It is essential that the side facing the membrane is designed according to the invention and the offset of the bars on each electrode plate is max. is half a bar width.

Claims (5)

1. Membran-Elektrolysezelle vom Filterpressentyp mit a) paarweise flächenhaften Elektroden, die je mindestens einen durchbrochenen aktiven Mittelteil enthalten, b) zwischen den paarweisen Elektroden angeordneter Membran, c) jeweils zwischen Elektrodenrand und Membranrand liegender Dichtung,
dadurch gekennzeichnet, daß d) der durchbrochene Mittelteil einer Elektrode einen gitterähnlichen Aufbau aufweist, e) die Gitterstäbe der paarweise zugeordneten Elektroden um max. 1/2 Stabbreite gegeneinander versetzt sind, f) die Gitterstäbe einer Elektrode so angeordnet sind, daß ihr Abstand untereinander kleiner als die Projektion ihrer Breite ist, g) die Gitterstäbe mindestens an der Aktivseite eine konvexe Wölbung haben, h) die Dicke der Dichtung zwischen Elektrodenrand und Membranrand gleich oder geringer ist als die Höhe des über den Elektrodenrand ragenden Gitterstabanteils. 1. Membrane electrolysis cell of the filter press type with a) pairs of planar electrodes, each containing at least one perforated active middle part, b) membrane arranged between the paired electrodes, c) sealing located between the edge of the electrode and the edge of the membrane,
characterized in that d) the perforated middle part of an electrode has a grid-like structure, e) the bars of the electrodes assigned in pairs by max. 1/2 bar width are offset from each other, f) the grid rods of an electrode are arranged in such a way that their distance from one another is smaller than the projection of their width, g) the bars have a convex curvature at least on the active side, h) the thickness of the seal between the edge of the electrode and the edge of the membrane is equal to or less than the height of the portion of the lattice rod projecting beyond the edge of the electrode. 2. Membran-Elektrolysezelle vom Filterpressentyp mit a) paarweise flächenhaften Elektroden, die je mindestens einen durchbrochenen aktiven Mittelteil enthalten, b) zwischen den paarweisen Elektroden angeordneter Membran, c) jeweils zwischen einem Elektrodenrand und einem Membranrand liegender Dichtung,
dadurch gekennzeichnet, daß d) der durchbrochene Mittelteil einer Elektrode einen gitterähnlichen Aufbau aufweist, e) die Gitterstäbe der paarweise zugeordneten Elektroden um max. 1/2 Stabbreite gegeneinander versetzt sind, f) die Gitterstäbe einer Elektrode so angeordnet sind, daß ihr Abstand untereinander kleiner als die Projektion ihrer Breite ist, g) die'Gitterstäbe mindestens an der Aktivseite eine konvexe Wölbung haben, h) die Dicke der Dichtung zwischen Elektrodenrand und Membranrand gleich oder geringer ist als die doppelte Höhe des über den Elektrodenrand ragenden Gitterstabanteils. 2. Filter press type membrane electrolysis cell with a) pairs of planar electrodes, each containing at least one perforated active middle part, b) membrane arranged between the paired electrodes, c) sealing located between an electrode edge and a membrane edge,
characterized in that d) the perforated middle part of an electrode has a grid-like structure, e) the bars of the electrodes assigned in pairs by max. 1/2 bar width are offset from each other, f) the grid rods of an electrode are arranged such that their distance from one another is smaller than the projection of their width, g) the bars have a convex curvature at least on the active side, h) the thickness of the seal between the edge of the electrode and the edge of the membrane is equal to or less than twice the height of the portion of the lattice rod projecting beyond the edge of the electrode. 3. Membran-Elektrolysezelle nach Anspruch 1 dadurch gekennzeichnet, daß die Gitterstäbe aus dem Elektrodenblech ausgestanzt und geformt sind.3. Membrane electrolytic cell according to claim 1, characterized in that the bars are punched out and shaped from the electrode sheet. 4. Membran-Elektrolysezelle nach Anspruch 1 und 2 dadurch gekennzeichnet, daß die Gitterstäbe waagerecht verlaufen.4. Membrane electrolytic cell according to claim 1 and 2, characterized in that the bars extend horizontally. 5. Membran-Elektrolysezelle nach Anspruch 1 bis 3 dadurch gekennzeichnet, daß waagerecht verlaufende Gitterstäbe Einbuchtungen aufweisen.5. Membrane electrolytic cell according to claim 1 to 3, characterized in that horizontally extending bars have indentations.
EP83103915A 1982-05-26 1983-04-21 Membrane-electrolysis cell Expired EP0095039B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19823219704 DE3219704A1 (en) 1982-05-26 1982-05-26 MEMBRANE ELECTROLYSIS CELL
DE3219704 1982-05-26

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EP0095039A2 true EP0095039A2 (en) 1983-11-30
EP0095039A3 EP0095039A3 (en) 1985-05-15
EP0095039B1 EP0095039B1 (en) 1988-12-28

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US (1) US4469577A (en)
EP (1) EP0095039B1 (en)
JP (1) JPH0657874B2 (en)
CA (1) CA1204408A (en)
DE (2) DE3219704A1 (en)
IN (1) IN159130B (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0118973A1 (en) * 1983-02-09 1984-09-19 Imperial Chemical Industries Plc Electrolytic cell
DE4224492C1 (en) * 1992-07-24 1993-12-09 Uhde Gmbh Apparatus for the electrolytic treatment of liquids with an anode and a cathode chamber and their use
DE102006055709B3 (en) * 2006-11-23 2008-02-07 Uhdenora S.P.A. Measuring cell for electrodes and electrode coating has two chambers with chambers of opposite polarity either side of a membrane
DE102006046808A1 (en) * 2006-09-29 2008-04-03 Uhdenora S.P.A. Electrolysis cell used for chlor-alkali electrolysis comprises one electrode curved between two bars in the direction of the opposite-lying electrode
DE102006046807A1 (en) * 2006-09-29 2008-04-03 Uhdenora S.P.A. Electrolysis cell used for chlor-alkali electrolysis comprises one electrode curved between two bars in the direction of the opposite-lying electrode
DE102010021833A1 (en) 2010-05-28 2011-12-01 Uhde Gmbh Electrode for electrolysis cell
WO2014033238A1 (en) 2012-09-03 2014-03-06 Thyssenkrupp Uhde Gmbh Flow-type electrochemical cell

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE8400459L (en) * 1984-01-30 1985-07-31 Kema Nord Ab ELECTROLY FOR ELECTROLYSOR
US4648955A (en) * 1985-04-19 1987-03-10 Ivac Corporation Planar multi-junction electrochemical cell
SE465966B (en) * 1989-07-14 1991-11-25 Permascand Ab ELECTRIC FOR ELECTRIC LIGHTING, PROCEDURE FOR ITS MANUFACTURING AND APPLICATION OF THE ELECTRODE
US5334300A (en) * 1992-12-08 1994-08-02 Osmotek, Inc. Turbulent flow electrodialysis cell
DE4306889C1 (en) * 1993-03-05 1994-08-18 Heraeus Elektrochemie Electrode arrangement for gas-forming electrolytic processes in membrane cells and their use
US5366606A (en) * 1993-05-17 1994-11-22 Florida Scientific Laboratories Inc. Electrolytic gas generator
US5427658A (en) * 1993-10-21 1995-06-27 Electrosci Incorporated Electrolytic cell and method for producing a mixed oxidant gas
DE4415146C2 (en) * 1994-04-29 1997-03-27 Uhde Gmbh Electrode for electrolytic cells with an ion exchange membrane
DE19816334A1 (en) * 1998-04-11 1999-10-14 Krupp Uhde Gmbh Electrolysis apparatus for the production of halogen gases
ITMI20031269A1 (en) * 2003-06-24 2004-12-25 De Nora Elettrodi Spa NEW EXPANDABLE ANODE FOR DIAPHRAGM CELLS.
DE102005006555A1 (en) * 2005-02-11 2006-08-17 Uhdenora S.P.A. Electrode for electrolysis cells
JP5220020B2 (en) 2006-09-29 2013-06-26 ウデノラ・ソチエタ・ペル・アツィオーニ Electrolytic cell

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB668618A (en) * 1949-10-24 1952-03-19 Oerlikon Maschf Improvements in or relating to a plate-type electrode for electrolysers
CH335049A (en) * 1955-07-07 1958-12-31 Lonza Ag Filter press type electrolyzer
FR2070757A1 (en) * 1969-12-06 1971-09-17 Nippon Soda Co
FR2283245A1 (en) * 1974-08-26 1976-03-26 Hodogaya Chemical Co Ltd Electrode construction for bipolar cells - esp of the filter-press type for electrolysis of halide solns
FR2406674A1 (en) * 1977-10-21 1979-05-18 Kureha Chemical Ind Co Ltd ELECTRODES FOR DIAPHRAGM ELECTROLYTIC CELLS
EP0045148A1 (en) * 1980-07-30 1982-02-03 Imperial Chemical Industries Plc Electrode for use in electrolytic cell

Family Cites Families (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE453750C (en) * 1927-12-14 I G Farbenindustrie Akt Ges Electrolysis cell
DE446009C (en) * 1924-08-27 1927-06-21 Auergesellschaft Gmbh Device for the electrolytic decomposition of salt solutions
DE514716C (en) * 1926-06-23 1930-12-16 Raguhn Anhalter Metalllocherei Lattice cathode
DE897839C (en) * 1951-07-28 1953-11-23 Bamag Meguin Ag Pre-electrode for electrolysis cells
DE1264420B (en) * 1963-02-25 1968-03-28 Karl Hans Klaska Diaphragm electrolysis cell with vertically ribbed electrodes
US3661756A (en) * 1967-02-15 1972-05-09 Phelps Dodge Refining Corp Cathode for electrolyte refining of metal,such as copper
DE2222637A1 (en) * 1972-05-09 1973-11-29 Bayer Ag SUPPORTING FRAME FOR ELECTRODES OF ELECTROLYSIS DEVICES
JPS4916197A (en) * 1972-06-07 1974-02-13
IT989421B (en) * 1973-06-25 1975-05-20 Oronzio De Nora Impiantielettr ELECTROLYSIS CELL WITH SPECIAL SHAPED ELECTRODES AND DEFLECTORS SUITABLE TO REMOVE THE GASES THAT DEVELOP THE ELECTRODES OUTSIDE THE INTERELECTRODIC SPACE
US4013525A (en) * 1973-09-24 1977-03-22 Imperial Chemical Industries Limited Electrolytic cells
FR2280432A1 (en) * 1974-07-29 1976-02-27 Rhone Poulenc Ind ELECTROLYSIS CELL WITH BIPOLAR ELEMENTS FOR ELECTROLYSIS IN PARTICULAR ALKALINE SALT SOLUTIONS
FR2343825A1 (en) * 1976-03-08 1977-10-07 Solvay ELECTRODE FOR THE PRODUCTION OF GAS IN A MEMBRANE CELL
US4013535A (en) * 1976-06-07 1977-03-22 The B. F. Goodrich Company Electrolyte separator tensioning device
US4013537A (en) * 1976-06-07 1977-03-22 The B. F. Goodrich Company Electrolytic cell design
GB1581534A (en) * 1976-09-20 1980-12-17 Ici Ltd Electrolytic cell
FR2381835A1 (en) * 1977-02-28 1978-09-22 Solvay Electrolytic cell with perforated vertical electrodes for gas passage - the free hole area increasing uniformly from bottom to top
GB1595193A (en) * 1977-03-04 1981-08-12 Ici Ltd Diaphragm cell
GB1595183A (en) * 1977-03-04 1981-08-12 Ici Ltd Diaphragm cell
US4142950A (en) * 1977-11-10 1979-03-06 Basf Wyandotte Corporation Apparatus and process for electrolysis using a cation-permselective membrane and turbulence inducing means
CA1159008A (en) * 1978-12-04 1983-12-20 Sankar Das Gupta Reactor with working and secondary electrodes and polarity reversal means for treating waste water
US4175025A (en) * 1978-07-07 1979-11-20 Basf Wyandotte Corporation Sealed membrane filter press electrolytic cells
IT1118243B (en) * 1978-07-27 1986-02-24 Elche Ltd MONOPOLAR ELECTROLYSIS CELL
US4247376A (en) * 1979-01-02 1981-01-27 General Electric Company Current collecting/flow distributing, separator plate for chloride electrolysis cells utilizing ion transporting barrier membranes
JPS5824932Y2 (en) * 1979-04-02 1983-05-28 東亞合成株式会社 Cathode for electrolysis
DE2929043A1 (en) * 1979-07-18 1981-02-12 Reis August K DISINFECTING DEVICE
US4313812A (en) * 1980-03-10 1982-02-02 Olin Corporation Membrane electrode pack cells designed for medium pressure operation

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB668618A (en) * 1949-10-24 1952-03-19 Oerlikon Maschf Improvements in or relating to a plate-type electrode for electrolysers
CH335049A (en) * 1955-07-07 1958-12-31 Lonza Ag Filter press type electrolyzer
FR2070757A1 (en) * 1969-12-06 1971-09-17 Nippon Soda Co
FR2283245A1 (en) * 1974-08-26 1976-03-26 Hodogaya Chemical Co Ltd Electrode construction for bipolar cells - esp of the filter-press type for electrolysis of halide solns
FR2406674A1 (en) * 1977-10-21 1979-05-18 Kureha Chemical Ind Co Ltd ELECTRODES FOR DIAPHRAGM ELECTROLYTIC CELLS
EP0045148A1 (en) * 1980-07-30 1982-02-03 Imperial Chemical Industries Plc Electrode for use in electrolytic cell

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0118973A1 (en) * 1983-02-09 1984-09-19 Imperial Chemical Industries Plc Electrolytic cell
DE4224492C1 (en) * 1992-07-24 1993-12-09 Uhde Gmbh Apparatus for the electrolytic treatment of liquids with an anode and a cathode chamber and their use
DE102006046808A1 (en) * 2006-09-29 2008-04-03 Uhdenora S.P.A. Electrolysis cell used for chlor-alkali electrolysis comprises one electrode curved between two bars in the direction of the opposite-lying electrode
DE102006046807A1 (en) * 2006-09-29 2008-04-03 Uhdenora S.P.A. Electrolysis cell used for chlor-alkali electrolysis comprises one electrode curved between two bars in the direction of the opposite-lying electrode
DE102006055709B3 (en) * 2006-11-23 2008-02-07 Uhdenora S.P.A. Measuring cell for electrodes and electrode coating has two chambers with chambers of opposite polarity either side of a membrane
DE102010021833A1 (en) 2010-05-28 2011-12-01 Uhde Gmbh Electrode for electrolysis cell
WO2011147557A1 (en) 2010-05-28 2011-12-01 Uhde Gmbh Electrode for electrolysis cells
US11162178B2 (en) 2010-05-28 2021-11-02 Uhdenora S.P.A. Electrode for electrolysis cells
WO2014033238A1 (en) 2012-09-03 2014-03-06 Thyssenkrupp Uhde Gmbh Flow-type electrochemical cell
DE102012017306A1 (en) 2012-09-03 2014-03-06 Thyssenkrupp Uhde Gmbh Electrochemical cell of flow type

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US4469577A (en) 1984-09-04
EP0095039B1 (en) 1988-12-28
JPS58213886A (en) 1983-12-12
DE3378769D1 (en) 1989-02-02
JPH0657874B2 (en) 1994-08-03
IN159130B (en) 1987-03-28
CA1204408A (en) 1986-05-13
DE3219704A1 (en) 1983-12-01
EP0095039A3 (en) 1985-05-15

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