EP0953069A1 - Cell cover for electrolytic cells - Google Patents

Cell cover for electrolytic cells

Info

Publication number
EP0953069A1
EP0953069A1 EP98902977A EP98902977A EP0953069A1 EP 0953069 A1 EP0953069 A1 EP 0953069A1 EP 98902977 A EP98902977 A EP 98902977A EP 98902977 A EP98902977 A EP 98902977A EP 0953069 A1 EP0953069 A1 EP 0953069A1
Authority
EP
European Patent Office
Prior art keywords
sleeve
cover
lining
cover according
apparatus cover
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.)
Granted
Application number
EP98902977A
Other languages
German (de)
French (fr)
Other versions
EP0953069B1 (en
Inventor
Peter Clasen
Stefan Venghaus
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.)
Bayer AG
Original Assignee
Bayer AG
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 Bayer AG filed Critical Bayer AG
Publication of EP0953069A1 publication Critical patent/EP0953069A1/en
Application granted granted Critical
Publication of EP0953069B1 publication Critical patent/EP0953069B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • the invention relates to corrosion-resistant apparatus covers, in particular cell covers for electrolytic cells, with an improved wall lining.
  • the proposed, more easily removable lining is particularly suitable for use on new or used lids for electrolysis cells that work according to the amalgam process.
  • plastic films are also used to cover the cells (so-called “membrane covers”).
  • membrane covers prove to be disadvantageous because they limit the possibility of vertically adjusting the anodes.
  • the invention has for its object to provide an apparatus cover with a corrosion-resistant lining which does not have the disadvantages of the known constructions, the cover being provided with a more easily detachable lining made of plastic or metal.
  • current feedthroughs for example when used as an electrolytic cell cover, must be taken into account.
  • the object is achieved in that on prepared i.e. cut, drilled or chamfered plates made of plastic or metal sheets, in particular titanium or titanium alloys, the bushings for the anodes are attached, e.g. by welding. After placing it on the steel cover, the anode sleeves are prevented from slipping out of the holes by suitable holding devices, e.g. by holding plates or screw connections.
  • the invention relates to an apparatus cover with a corrosion-resistant lining and at least one electrical feedthrough, characterized in that the lining on the feedthrough is firmly and gas-tightly connected to a sleeve protruding beyond the cover wall, that the sleeve is fixed to the cover wall with a releasable fastening means and that the space between the current feedthrough and the sleeve is sealed with the aid of a releasable sealant, the power feedthrough being electrically insulated from the sleeve and the cover.
  • an additional sealant is provided in the apparatus cover, which prevents corrosive gases from escaping.
  • Sleeve on the cover is a clamping ring that engages in a groove on the sleeve, or a union nut that engages in a thread on the sleeve.
  • the sealant on the feedthrough is pulled down so far that it also surrounds the feedthrough in the inner region of the sleeve and is electrically insulated.
  • An additional insulating layer made of a closed-pore polymer foam, in particular made of polyurethane foam, e.g. in plate form.
  • the lining of the apparatus cover can consist of plastic, in particular polyvinylidene fluoride (PVDF), polytetrafluoroethylene-co-hexafluoropropylene (FEP), perfluoroalkoxy polymers (PFA) or (PVC, PVC-HT) or metal, in particular of
  • Titanium or its alloys It is particularly preferably made of titanium
  • cell covers can also be covered with plastics, e.g. PVDF, FEP, PFA, PVC.
  • plastics e.g. PVDF, FEP, PFA, PVC.
  • the large-area plates of the lining and the sleeves for the anode feedthroughs can be connected to one another under optimal conditions, e.g. by welding.
  • the surface of the metal cell cover can be provided with an additional coating as corrosion protection.
  • DD lacquers or epoxy resins are particularly suitable as a material for a coating.
  • the lining can be repaired under simplified conditions, since the lining can be easily removed from the cell cover.
  • the design-influenceable gap between the lining and the lid also allows the lining to be checked for leaks.
  • the lids can also be coated on all sides with a suitable coating to protect them from corrosion.
  • Experiments with loose plastic cladding showed that, despite the high coefficient of thermal expansion of the plastic, they are also well suited for the lining of lids. With detachable cladding made of metal, all welds can be carried out under optimal conditions.
  • the proposed detachable connections are particularly suitable for cladding metallic covers of electrolytic cells for the production of chlorine by the amalgam process.
  • the invention also relates to the use of the apparatus cover according to the invention as a housing cover for electrolysers, in particular for chlor-alkali electrolysis, for. B. after the amalgam process.
  • Fig. 1 shows a side view of an embodiment of the apparatus cover according to the invention.
  • Fig. 2 shows a detail corresponding to a section AA 1 in Figure 1 in the area of
  • FIG. 3 shows an alternative detail corresponding to a section AA ′ in FIG. 1 in the area of the sleeve 5.
  • Fig. 1 shows a segment of a lid of an electrolysis cell, in which chlorine is produced by the amalgam process, with a loose cover 2 made of plastic and a usual anode bushing 12 through the lid 1.
  • the plate-shaped covering 2 e.g. made of PVDF, FEP, PVC
  • the sleeve 5 for the anode feedthrough 12 see FIG. 2
  • the cell cover 1 is then placed on the lining 2, the sleeves 5 extending through holes 3 in the cover wall 1.
  • Insulation 4 is additionally provided as a barrier for harmful gases between cell cover 1 and cladding 2.
  • Fig. 2 shows a section through a sleeve 5 with anode bushing 12.
  • split holders for example clamping rings 6 made of plastic or metal engaging in a groove 13 in the sleeve 5
  • the sleeves 5 are prevented from slipping out of the bores 3 in the cover 1 .
  • Slipping out can alternatively z. B. can also be prevented by a screw connection 16, 17 (see Fig. 3).
  • the anodes 12 are sealed, for example, by a rubber washer 8, which is pressed onto the upper edge of the sleeve 5 with the aid of the flange 9 and the screw connections 10, e.g. to seal the reaction space from the environment.
  • Seal 7 is intended to prevent moisture from getting between the lining 2 and cell cover 1, for example when cleaning the top of the cover. To avoid corrosion on the underside of the lid 1, this is with a ge . appropriate corrosion protection 11 provided.
  • the same construction is also for a lining based on metallic materials, e.g. with titanium, suitable.
  • Fig. 3 shows a section through a sleeve 5 with anode bushing 12, in which the sleeve is fixed with the aid of a union nut 17.
  • the rubber seal in the inner region 15 of the sleeve 5 is pulled down in order to secure the bushing 12 against a short circuit with the sleeve 5 if it is made of metal.

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  • 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 Metals (AREA)
  • Prevention Of Electric Corrosion (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
  • Sealing Battery Cases Or Jackets (AREA)

Abstract

The invention concerns anti-corrosive apparatus covers, in particular covers for electrolytic cells, with an improved detachable wall-covering (2). The proposed covering (2), which can be detached more easily, is suitable in particular for use on new or used covers (1) of electrolytic cells operating according to the amalgam process.

Description

Zellendeckel für ElektrolysezellenCell cover for electrolytic cells
Die Erfindung betrifft korrosionsbeständige Apparatedeckel, insbesondere Zellendeckel für Elektrolysezellen, mit einer verbesserten Wandauskleidung. Die vorge- schlagene, einfacher lösbare Auskleidung eignet sich besonders für den Einsatz an neuen oder gebrauchten Deckeln von Elektrolysezellen, die nach dem Amalgamverfahren arbeiten.The invention relates to corrosion-resistant apparatus covers, in particular cell covers for electrolytic cells, with an improved wall lining. The proposed, more easily removable lining is particularly suitable for use on new or used lids for electrolysis cells that work according to the amalgam process.
Für das Verkleiden von Elektrolysezellendeckeln aus Metall, die für den Einsatz im Amalgamverfahren geeignet sind, sind wenigstens drei verschiedene Verfahren bekannt:At least three different processes are known for cladding metal electrolysis cell covers which are suitable for use in the amalgam process:
Das Aufbringen einer nicht lösbaren Verkleidung von Gummi auf einen konventionellen Stahldeckel oder die innere Verkleidung des Deckels mit nicht lös- baren Blechen aus Titan.The application of a non-detachable covering of rubber on a conventional steel cover or the inner covering of the cover with non-detachable titanium sheets.
Desweiteren werden auch Kunststoffolien zur Abdeckung der Zellen verwendet (sogenannte "Membrandeckel").Furthermore, plastic films are also used to cover the cells (so-called "membrane covers").
Der Nachteil von gummierten Deckeln ist, daß sich an gummierten Deckeln durchThe disadvantage of rubberized lids is that rubberized lids get through
Reaktion mit Chlor dioxin- und furanhaltige Reaktionsprodukte bilden können. Ein weiterer Nachteil besteht in der aufwendigen Instandsetzung solcher Deckel. Soll ein gummierter Deckel neu beschichtet werden, so muß zunächst die Gummierung z.B. durch Kälte zum Sprödbruch gebracht werden und die am Deckel anhaftenden Gummireste müssen anschließend durch Abmeißeln entfernt werden.Can form reaction with chlorine dioxin and furan-containing reaction products. Another disadvantage is the costly repair of such covers. If a rubberized cover is to be newly coated, the rubber coating must first be e.g. brought to brittle fracture by cold and the rubber residues adhering to the lid must then be removed by chiseling off.
Zellendeckel mit Titanauskleidung weisen folgende Nachteile auf. Die Verkleidung von Stahldeckeln mit Hilfe von Titanblechen ist vergleichsweise aufwendig und teuer wegen der vielen Schweißnähte an den Anodendurchführungen im Zellendeckel. Bei einer geringfügigen Beschädigung der Titanauskleidung gelangt feuchtes Chlor an denCell covers with titanium lining have the following disadvantages. The cladding of steel lids with the help of titanium sheets is comparatively complex and expensive because of the many weld seams on the anode feedthroughs in the cell lid. If the titanium lining is slightly damaged, moist chlorine will reach the
Zellenstahldeckel, wonach eine starke Korrosion des Stahlteiles einsetzt. Eine fachgerechte Reparaturschweißung an der Titanauskleidung ist wegen mangelhafter Gasbe- schleierung des Spaltes zwischen Titanauskleidung und korrodiertem Stahldeckel praktisch nicht möglich.Cellular steel cover, after which strong corrosion of the steel part begins. A professional repair weld on the titanium lining is due to insufficient gas The gap between the titanium lining and the corroded steel cover is practically not feasible.
Der Austausch eines Stahldeckels gegen einen "Membrandeckel" aus Kunststoff ist sehr kostspielig und praktisch schwer durchführbar, da u.a. die Konstruktion für dieReplacing a steel cover with a "membrane cover" made of plastic is very expensive and practically difficult to carry out, since the construction for the
Stromzuführung geändert werden müßte. Überdies erweisen sich Membrandeckel als nachteilig, da sie die Möglichkeit begrenzen die Anoden vertikal zu verstellen.Power supply would have to be changed. In addition, membrane covers prove to be disadvantageous because they limit the possibility of vertically adjusting the anodes.
Der Erfindung liegt die Aufgabe zugrunde, einen Apparatedeckel mit korrosionsbe- ständiger Auskleidung zu schaffen, der die Nachteile der bekannten Konstruktionen nicht aufweist, wobei der Deckel mit einer leichter lösbaren Auskleidung aus Kunststoff oder Metall zu versehen ist. Insbesondere gilt es dabei Stromdurchführungen, beispielsweise bei der Verwendung als Elektrolysezellendeckel, zu berücksichtigen.The invention has for its object to provide an apparatus cover with a corrosion-resistant lining which does not have the disadvantages of the known constructions, the cover being provided with a more easily detachable lining made of plastic or metal. In particular, current feedthroughs, for example when used as an electrolytic cell cover, must be taken into account.
Die Aufgabe wird erfindungsgemäß dadurch gelöst, daß auf vorbereiteten d.h. zugeschnittenen, gebohrten oder angefasten Platten aus Kunststoff oder Blechen aus Metall, insbesondere aus Titan oder Titanlegierungen, die Durchführungen für die Anoden angebracht werden, z.B. durch Schweißen. Nach dem Auflegen auf die Stahldeckel wird ein Herausrutschen der Anodenhülsen aus den Bohrungen durch geeig- nete Haltevorrichtungen verhindert, z.B. durch Haltebleche oder Verschraubungen.The object is achieved in that on prepared i.e. cut, drilled or chamfered plates made of plastic or metal sheets, in particular titanium or titanium alloys, the bushings for the anodes are attached, e.g. by welding. After placing it on the steel cover, the anode sleeves are prevented from slipping out of the holes by suitable holding devices, e.g. by holding plates or screw connections.
Gegenstand der Erfindung ist ein Apparatedeckel mit korrosionsbeständiger Auskleidung und wenigstens einer elektrischen Stromdurchführung, dadurch gekennzeichnet, daß die Auskleidung an der Stromdurchführung mit einer über die Deckel- wand hinausragenden Hülse fest und gasdicht verbunden ist, daß die Hülse mit einem lösbaren Befestigungsmittel an der Deckelwand fixiert ist, und daß der Raum zwischen der Stromdurchführung und der Hülse mit Hilfe eines lösbaren Dichtmittels abgedichtet ist, wobei die Stromdurchführung gegenüber der Hülse und dem Deckel elektrisch isoliert ist.The invention relates to an apparatus cover with a corrosion-resistant lining and at least one electrical feedthrough, characterized in that the lining on the feedthrough is firmly and gas-tightly connected to a sleeve protruding beyond the cover wall, that the sleeve is fixed to the cover wall with a releasable fastening means and that the space between the current feedthrough and the sleeve is sealed with the aid of a releasable sealant, the power feedthrough being electrically insulated from the sleeve and the cover.
Bevorzugt ist im Apparatedeckel ein zusätzliches die Hülse umlaufendes Dichtmittel vorgesehen, das ein Ausdringen korrosiver Gase verhindert. In einer besonderen Ausführung ist das Befestigungsmittel für die Befestigung derPreferably, an additional sealant is provided in the apparatus cover, which prevents corrosive gases from escaping. In a special version, the fastening means for fastening the
Hülse am Deckel ein Spannring, der in eine Nut an der Hülse eingreift, oder eine Überwurfmutter, die in ein Gewinde an der Hülse eingreift.Sleeve on the cover is a clamping ring that engages in a groove on the sleeve, or a union nut that engages in a thread on the sleeve.
In einer weiteren bevorzugten Variante ist das Dichtmittel an der Stromdurchführung so weit heruntergezogen, daß es die Stromdurchführung auch im Innenbereich der Hülse umschließt und elektrisch isoliert.In a further preferred variant, the sealant on the feedthrough is pulled down so far that it also surrounds the feedthrough in the inner region of the sleeve and is electrically insulated.
Bevorzugt ist zwischen der Auskleidung und der Deckelwand eine zusätzliche Isolierschicht aus einem geschlossenporigen Polymerschaum, insbesondere aus Polyurethanschaum, z.B. in Plattenform, vorgesehen.An additional insulating layer made of a closed-pore polymer foam, in particular made of polyurethane foam, e.g. in plate form.
Die Auskleidung des Apparatedeckels kann aus Kunstoff, insbesondere Polyvinyliden- fluorid (PVDF), Polytetrafluorethylen-co-hexafluorpropylen (FEP), Perfluoralkoxy- polymeren (PFA) oder (PVC, PVC-HT) oder aus Metall bestehen, insbesondere ausThe lining of the apparatus cover can consist of plastic, in particular polyvinylidene fluoride (PVDF), polytetrafluoroethylene-co-hexafluoropropylene (FEP), perfluoroalkoxy polymers (PFA) or (PVC, PVC-HT) or metal, in particular of
Titan oder seinen Legierungen. Besonders bevorzugt besteht sie aus TitanTitanium or its alloys. It is particularly preferably made of titanium
Außer mit Metallblechen, z.B. aus Titan, können Zellendeckel wie beschrieben auch mit Kunststoffen, z.B. PVDF, FEP, PFA, PVC, verkleidet werden. Die großflächigen Platten der Auskleidung und die Hülsen für die Anodendurchführungen können unter optimalen Bedingungen miteinander verbunden werden, z.B. durch Schweißen. Die Oberfläche des Zellendeckels aus Metall kann mit einem zusätzlichen Überzug als Korrosionsschutz versehen werden. Als Material für einen Überzug kommen insbesondere DD-Lacke oder Epoxidharze in Frage.Except with metal sheets, e.g. made of titanium, cell covers can also be covered with plastics, e.g. PVDF, FEP, PFA, PVC. The large-area plates of the lining and the sleeves for the anode feedthroughs can be connected to one another under optimal conditions, e.g. by welding. The surface of the metal cell cover can be provided with an additional coating as corrosion protection. DD lacquers or epoxy resins are particularly suitable as a material for a coating.
Bei Beschädigung der Auskleidung ist nach ihrer Entfernung vom Zellendeckel eine Reparatur der Auskleidung unter vereinfachten Bedingungen möglich, da die Auskleidung vom Zellendeckel leicht lösbar ist. Der konstruktiv beeinflußbare Spalt zwischen Auskleidung und Deckel erlaubt zudem eine Überprüfung der Auskleidung auf Dichtigkeit.If the lining is damaged, after removal from the cell cover, the lining can be repaired under simplified conditions, since the lining can be easily removed from the cell cover. The design-influenceable gap between the lining and the lid also allows the lining to be checked for leaks.
Die Deckel können zusätzlich allseitig mit einem geeigneten Anstrich als Korrosionsschutz versehen werden. Versuche mit losen KunststoffVerkleidungen zeigten, daß auch sie trotz des hohen Wärmeausdehnungskoeffizienten des Kunststoffes gut für Auskleidungen von Deckeln geeignet sind. Bei lösbaren Verkleidungen aus Metall können alle Schwei- ßungen unter optimalen Bedingungen durchgeführt werden.The lids can also be coated on all sides with a suitable coating to protect them from corrosion. Experiments with loose plastic cladding showed that, despite the high coefficient of thermal expansion of the plastic, they are also well suited for the lining of lids. With detachable cladding made of metal, all welds can be carried out under optimal conditions.
Die vorgeschlagenen lösbaren Verbindungen sind insbesondere zur Verkleidung von metallischen Deckeln von Elektrolysezellen zur Herstellung von Chlor nach dem Amalgamverfahren geeignet.The proposed detachable connections are particularly suitable for cladding metallic covers of electrolytic cells for the production of chlorine by the amalgam process.
Gegenstand der Erfindung ist auch die Verwendung des erfindungsgemäßen Apparatedeckels als Gehäusedeckel für Elektrolyseure, insbesondere für die Chlor-Alkali- Elektrolyse, z. B. nach dem Amalgamverfahren.The invention also relates to the use of the apparatus cover according to the invention as a housing cover for electrolysers, in particular for chlor-alkali electrolysis, for. B. after the amalgam process.
Die Erfindung wird nachstehend beispielhaft anhand der Figuren näher erläutert, ohne daß die Erfindung im einzelnen eingeschränkt ist.The invention is explained in more detail below by way of example with reference to the figures, without the invention being restricted in detail.
Fig. 1 zeigt in einer seitlichen Aufsicht eine Ausführungsform des erfindungsgemäßen Apparatedeckels.Fig. 1 shows a side view of an embodiment of the apparatus cover according to the invention.
Fig. 2 zeigt ein Detail entsprechend einem Schnitt A-A1 in Figur 1 im Bereich derFig. 2 shows a detail corresponding to a section AA 1 in Figure 1 in the area of
Hülse 5 und der Stromdurchführung 12.Sleeve 5 and the current feedthrough 12th
Fig. 3 zeigt ein alternatives Detail entsprechend einem Schnitt A-A' in Figur 1 im Bereich der Hülse 5. FIG. 3 shows an alternative detail corresponding to a section AA ′ in FIG. 1 in the area of the sleeve 5.
Beispielexample
Fig. 1 zeigt ein Segment eines Deckels einer Elektrolysezelle, in der Chlor nach dem Amalgamverfahren hergestellt wird, mit einer losen Verkleidung 2 aus Kunststoff und einer üblichen Anodendurchführung 12 durch den Deckel 1. Praktischerweise wird i. a. die plattenförmige Verkleidung 2, z.B. aus PVDF, FEP, PVC, mit der Hülse 5 für die Anodendurchführung 12 (siehe Fig. 2) vor der Montage auf den Zellendeckel 1 miteinander gasdicht verbunden, z.B. durch Verschweissen. Anschließend wird der Zellendeckel 1 auf die Auskleidung 2 gelegt, wobei die Hülsen 5 durch Bohrungen 3 in der Deckelwand 1 reichen. Zwischen Zellendeckel 1 und Verkleidung 2 ist zusätzlich eine Isolierung 4 als Barriere für Schadgase vorgesehen.Fig. 1 shows a segment of a lid of an electrolysis cell, in which chlorine is produced by the amalgam process, with a loose cover 2 made of plastic and a usual anode bushing 12 through the lid 1. Practically, i. a. the plate-shaped covering 2, e.g. made of PVDF, FEP, PVC, with the sleeve 5 for the anode feedthrough 12 (see FIG. 2), gas-tightly connected to one another before assembly on the cell cover 1, e.g. by welding. The cell cover 1 is then placed on the lining 2, the sleeves 5 extending through holes 3 in the cover wall 1. Insulation 4 is additionally provided as a barrier for harmful gases between cell cover 1 and cladding 2.
Fig. 2 zeigt einen Schnitt durch eine Hülse 5 mit Anodendurchführung 12. Durch geteilte Halterungen, beispielsweise Spannringe 6 aus Kunststoff oder Metall eingreifend in eine Nut 13 in der Hülse 5, wird verhindert, daß die Hülsen 5 aus den Bohrungen 3 im Deckel 1 herausrutschen. Das Herausrutschen kann alternativ z. B. auch durch eine Schraub Verbindung 16, 17 verhindert werden (siehe Fig.3). Die Abdichtung der Anoden 12 erfolgt beispielsweise durch eine Gummischeibe 8, die mit Hilfe des Flansches 9 und der Schraubverbindungen 10 auf die Oberkante der Hülse 5 gepreßt wird, z.B. zwecks Abdichtung des Reaktionsraumes von der Umgebung. Die weitereFig. 2 shows a section through a sleeve 5 with anode bushing 12. By means of split holders, for example clamping rings 6 made of plastic or metal engaging in a groove 13 in the sleeve 5, the sleeves 5 are prevented from slipping out of the bores 3 in the cover 1 . Slipping out can alternatively z. B. can also be prevented by a screw connection 16, 17 (see Fig. 3). The anodes 12 are sealed, for example, by a rubber washer 8, which is pressed onto the upper edge of the sleeve 5 with the aid of the flange 9 and the screw connections 10, e.g. to seal the reaction space from the environment. The further one
Dichtung 7 soll verhindern, daß z.B. bei der Reinigung der Oberseite des Deckels Feuchtigkeit zwischen Auskleidung 2 und Zellendeckel 1 gelangt. Zur Vermeidung von Korrosion an der Unterseite des Deckels 1 wird dieser mit einem ge.eigneten Korrosionsschutz 11 versehen.Seal 7 is intended to prevent moisture from getting between the lining 2 and cell cover 1, for example when cleaning the top of the cover. To avoid corrosion on the underside of the lid 1, this is with a ge . appropriate corrosion protection 11 provided.
Die gleiche Konstruktion ist auch für eine Auskleidung auf Basis von metallischen Werkstoffen, z.B. mit Titan, geeignet.The same construction is also for a lining based on metallic materials, e.g. with titanium, suitable.
Fig. 3 zeigt einen Schnitt durch eine Hülse 5 mit Anodendurchführung 12, bei der die Hülse mit Hilfe einer Überwurfmutter 17 fixiert ist. In diesem Beispiel ist die Gummidichtung im Innenbereich 15 der Hülse 5 heruntergezogen um die Durchführung 12 vor einem Kurzschluß mit der Hülse 5 zu sichern, wenn diese aus Metall gefertigt ist. Fig. 3 shows a section through a sleeve 5 with anode bushing 12, in which the sleeve is fixed with the aid of a union nut 17. In this example, the rubber seal in the inner region 15 of the sleeve 5 is pulled down in order to secure the bushing 12 against a short circuit with the sleeve 5 if it is made of metal.

Claims

Patentansprüche claims
1. Apparatedeckel mit korrosionsbeständiger Auskleidung (2) und wenigstens einer elektrischen Stromdurchführung (12), dadurch gekennzeichnet, daß die Auskleidung (2) an der Stromdurchführung (12) mit einer über die Deckelwand (1) hinausragenden Hülse (5) fest und gasdicht verbunden ist, daß die Hülse (5) mit einem lösbaren Befestigungsmittel (6) an der Deckelwand (1) fixiert ist, und daß der Raum zwischen der Stromdurchführung (12) und der Hülse (5) mit Hilfe eines lösbaren Dichtmittels (8) abgedichtet ist, wobei die Stromdurchführung (12) gegenüber der Hülse (5) und dem Deckel elektrisch isoliert ist.1. apparatus cover with corrosion-resistant lining (2) and at least one electrical feedthrough (12), characterized in that the lining (2) on the feedthrough (12) with a protruding from the cover wall (1) sleeve (5) firmly and gas-tight is that the sleeve (5) is fixed to the cover wall (1) with a releasable fastening means (6) and that the space between the current feedthrough (12) and the sleeve (5) is sealed with the aid of a releasable sealant (8) , wherein the current feedthrough (12) is electrically insulated from the sleeve (5) and the cover.
2. Apparatedeckel nach Anspruch 1, dadurch gekennzeichnet, daß ein zusätzliches die Hülse umlaufendes Dichtmittel (7) vorgesehen ist.2. Apparatus cover according to claim 1, characterized in that an additional sealing means (7) surrounding the sleeve is provided.
3. Apparatedeckel nach den Ansprüchen 1 bis 2, dadurch gekennzeichnet, daß das Befestigungsmittel (6) ein Spannring ist, der in eine Nut (13) an der Hülse (5) eingreift.3. Apparatus cover according to claims 1 to 2, characterized in that the fastening means (6) is a clamping ring which engages in a groove (13) on the sleeve (5).
4. Apparatedeckel nach den Ansprüchen 1 bis 2, dadurch gekennzeichnet, daß das Befestigungsmittel (6) eine Überwurfmutter (16) ist, die in ein Gewinde (17) an der Hülse (5) eingreift.4. Apparatus cover according to claims 1 to 2, characterized in that the fastening means (6) is a union nut (16) which engages in a thread (17) on the sleeve (5).
5. Apparatedeckel nach den Ansprüchen 1 bis 4, dadurch gekennzeichnet, daß das Dichtmittel (8) die Stromdurchführung (12) auch im Innenbereich (15) der5. apparatus cover according to claims 1 to 4, characterized in that the sealing means (8), the current feedthrough (12) also in the inner region (15) of the
Hülse umschließt und elektrisch isoliert.Encloses sleeve and electrically insulated.
6. Apparatedeckel nach den Ansprüchen 1 bis 5, dadurch gekennzeichnet, daß zwischen der Auskleidung (2) und der Deckelwand (1) eine zusätzliche Isolier- Schicht (4) aus geschlossenporigen Polymerschaum, insbesondere Polyurethanschaum vorgesehen ist. 6. Apparatus cover according to claims 1 to 5, characterized in that an additional insulating layer (4) made of closed-pore polymer foam, in particular polyurethane foam, is provided between the lining (2) and the cover wall (1).
7. Apparatedeckel nach den Ansprüchen 1 bis 6, dadurch gekennzeichnet, daß die Auskleidung (2) aus Kunststoff, insbesondere PVDF, FEP, PFA, oder PVC, oder aus Metall, insbesondere Titan oder seinen Legierungen, bevorzugt aus Titan besteht7. apparatus cover according to claims 1 to 6, characterized in that the lining (2) made of plastic, in particular PVDF, FEP, PFA, or PVC, or of metal, in particular titanium or its alloys, preferably consists of titanium
8. Apparatedeckel nach den Ansprüchen 1 bis 7, dadurch gekennzeichnet, daß die Unterseite des Deckels (1) mit einer zusätzlichen Korrosionsschutzschicht (11) versehen ist.8. Apparatus cover according to claims 1 to 7, characterized in that the underside of the cover (1) is provided with an additional corrosion protection layer (11).
9. Verwendung des Apparatedeckels nach einem der Ansprüche 1 bis 8 als Gehäusedeckel für Elektrolyseure, insbesondere für die Chlor-Alkali-Elektrolyse, z. B. nach dem Amalgamverfahren. 9. Use of the apparatus cover according to one of claims 1 to 8 as a housing cover for electrolysers, in particular for chlor-alkali electrolysis, for. B. after the amalgam process.
EP98902977A 1997-01-10 1998-01-03 Cell cover for electrolytic cells Expired - Lifetime EP0953069B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19700534A DE19700534A1 (en) 1997-01-10 1997-01-10 Cell cover for electrolytic cells
DE19700534 1997-01-10
PCT/EP1998/000018 WO1998030737A1 (en) 1997-01-10 1998-01-03 Cell cover for electrolytic cells

Publications (2)

Publication Number Publication Date
EP0953069A1 true EP0953069A1 (en) 1999-11-03
EP0953069B1 EP0953069B1 (en) 2001-11-07

Family

ID=7817050

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EP98902977A Expired - Lifetime EP0953069B1 (en) 1997-01-10 1998-01-03 Cell cover for electrolytic cells

Country Status (10)

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US (1) US6200438B1 (en)
EP (1) EP0953069B1 (en)
JP (1) JP2001508127A (en)
AU (1) AU5986398A (en)
BR (1) BR9807470A (en)
CA (1) CA2277435A1 (en)
DE (2) DE19700534A1 (en)
ES (1) ES2167063T3 (en)
RU (1) RU2199611C2 (en)
WO (1) WO1998030737A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2664280C (en) * 2006-10-18 2012-06-12 Alcoa Inc. Electrode containers and associated methods
JP2023502203A (en) * 2019-11-13 2023-01-23 トプソー・アクチエゼルスカベット Halide removal cleaning system for hydrocarbon streams

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA860308A (en) * 1971-01-05 Schucker Josef Electrolytic cell
NL133391C (en) * 1964-08-31
IN142921B (en) 1973-08-09 1977-09-10 Uhde Gmbh Friedrich
US4087343A (en) * 1977-02-23 1978-05-02 The Goodyear Tire & Rubber Company Flexible cover of a platy-filled composition for an electrolytic cell
IT1164996B (en) * 1979-03-06 1987-04-22 Pirelli COVER FOR ELECTROLYTIC CELLS
US4443315A (en) * 1980-07-03 1984-04-17 Kanegafuchi Kagaku Kogyo Kabushiki Kaisha Finger type electrolytic cell for the electrolysis of an aqueous alkali metal chloride solution
JPH021072U (en) * 1988-06-09 1990-01-08
SE512758C2 (en) 1993-11-26 2000-05-08 Permascand Ab Method and apparatus for corrosion protection of cell caps for electrochemical cells

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9830737A1 *

Also Published As

Publication number Publication date
CA2277435A1 (en) 1998-07-16
DE19700534A1 (en) 1998-07-16
BR9807470A (en) 2000-05-02
EP0953069B1 (en) 2001-11-07
WO1998030737A1 (en) 1998-07-16
AU5986398A (en) 1998-08-03
RU2199611C2 (en) 2003-02-27
ES2167063T3 (en) 2002-05-01
US6200438B1 (en) 2001-03-13
JP2001508127A (en) 2001-06-19
DE59802055D1 (en) 2001-12-13

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