EP0953069A1 - Couvercle pour cellules electrolytiques - Google Patents

Couvercle pour cellules electrolytiques

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)
English (en)
Other versions
EP0953069B1 (fr
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/fr
Application granted granted Critical
Publication of EP0953069B1 publication Critical patent/EP0953069B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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.

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

Abstract

L'invention concerne des couvercles résistants à la corrosion pour appareils, notamment des couvercles pour cellules électrolytiques, avec un revêtement de paroi (2) amovible amélioré. Le revêtement (2) amovible simplifié proposé se caractérise en particulier en ce qu'il s'utilise sur des couvercles (1) neufs ou usagés de cellules électrolytiques, fonctionnant selon le procédé de l'amalgame.
EP98902977A 1997-01-10 1998-01-03 Couvercle pour cellules electrolytiques Expired - Lifetime EP0953069B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19700534A DE19700534A1 (de) 1997-01-10 1997-01-10 Zellendeckel für Elektrolysezellen
DE19700534 1997-01-10
PCT/EP1998/000018 WO1998030737A1 (fr) 1997-01-10 1998-01-03 Couvercle pour cellules electrolytiques

Publications (2)

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

Family

ID=7817050

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98902977A Expired - Lifetime EP0953069B1 (fr) 1997-01-10 1998-01-03 Couvercle pour cellules electrolytiques

Country Status (10)

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

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2664280C (fr) * 2006-10-18 2012-06-12 Alcoa Inc. Boitiers a electrode et procedes associes
JP2023502203A (ja) * 2019-11-13 2023-01-23 トプソー・アクチエゼルスカベット 炭化水素流のためのハロゲン化物除去洗浄システム

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 (fr) * 1964-08-31
IN142921B (fr) 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 (it) * 1979-03-06 1987-04-22 Pirelli Coperchio per celle elettrolitiche
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 (fr) * 1988-06-09 1990-01-08
SE512758C2 (sv) 1993-11-26 2000-05-08 Permascand Ab Förfarande och anordning för korrosionsskydd av cellock till elektrokemiska celler

Non-Patent Citations (1)

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

Also Published As

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

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