EP0951584B1 - Revetement de paroi pour cellules electrolytiques - Google Patents

Revetement de paroi pour cellules electrolytiques Download PDF

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Publication number
EP0951584B1
EP0951584B1 EP98901940A EP98901940A EP0951584B1 EP 0951584 B1 EP0951584 B1 EP 0951584B1 EP 98901940 A EP98901940 A EP 98901940A EP 98901940 A EP98901940 A EP 98901940A EP 0951584 B1 EP0951584 B1 EP 0951584B1
Authority
EP
European Patent Office
Prior art keywords
side wall
support structure
covering
wall according
pvc
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.)
Expired - Lifetime
Application number
EP98901940A
Other languages
German (de)
English (en)
Other versions
EP0951584A1 (fr
Inventor
Peter Clasen
Stefan Venghaus
Horst Dykrzak
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 EP0951584A1 publication Critical patent/EP0951584A1/fr
Application granted granted Critical
Publication of EP0951584B1 publication Critical patent/EP0951584B1/fr
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 a corrosion-protecting wall covering of side walls in apparatus for the absorption of process gases containing chlorine, especially in electrolysis cells.
  • the cladding is detachable and is particularly suitable for use with new ones and used side panels of electrolysis cells, which are made according to the amalgam process work.
  • the non-detachable rubber covering is provided with an additional glued plate from z. B. provided ethylene-propylene terpolymer (compare e.g. US 3,450,621).
  • rubberized sidewalls can form through reaction with chlorine gas reaction products containing dioxin and furan. These are due to their toxicity unwanted accompanying substances that have to be disposed of costly. Should one Sidewalls of an electrolysis apparatus are newly coated, so the Gum must be removed. This is usually done by strong cooling the rubber coating, which makes the rubber coating brittle, and by subsequent mechanical removal e.g. B. chiseling the adhering rubber residues.
  • a side panel covering with a combination of rubber and additional Polymer layer as described above is complex to manufacture and also expensive. If the rubber coating is damaged, moist chlorine will reach the Surface of the side cheeks, which is usually made of steel, one severe corrosion of the steel part begins. A professional repair welding of the bonded polymer cladding is practically impossible.
  • the invention has for its object linings for used or new Sidewalls e.g. of electrolysis equipment that does not have the disadvantages of the state of the art described above, and especially for repair purposes should be easy to solve.
  • the invention relates to a corrosion-protecting side wall for apparatus for the absorption of process gases containing chlorine, in particular for electrolytic cells is characterized in that on a metal support structure made in particular of steel or stainless steel a cladding made of welded or edged if necessary Polyvinylidene fluoride (PVDF), polytertrafluoroethylene-co-hexafluoropropylene sheets (FEP), polyvinyl chloride (PVC or PVC-HT) or perfluoroalkoxy polymer (PFA) is placed and, if necessary, fixed with a releasable adhesive for assembly, which with the bottom of the apparatus or other side parts using removable fasteners is connectable.
  • PVDF Polyvinylidene fluoride
  • FEP polytertrafluoroethylene-co-hexafluoropropylene sheets
  • PVC or PVC-HT polyvinyl chloride
  • PFA perfluoroalkoxy polymer
  • the individual plastic sheets for the production of the cladding can be folded and connected to the support structure under optimal conditions before assembly e.g. by welding.
  • the entire surface of the support structure Metal can also be protected against corrosion e.g. a varnish with DD varnishes or be provided with epoxy resins.
  • thermal insulation e.g. based on closed-pore polymer foams, especially polyurethane foam, intended.
  • plastic materials to be used according to the invention have a high coefficient of thermal expansion have shown in tests that the above Plastics are well suited for cladding the side walls of electrolysis cells are.
  • the proposed detachable side parts are used in particular in electrolysis cells used for the production of chlorine by the amalgam process.
  • a side wall 4 of an electrolytic cell is shown, in which chlorine after Amalgam process is produced.
  • Panel 1 made of PVDF panels.
  • the panel 1 is before assembly on the Sidewall made from individual PVDF segments by welding.
  • An insulating layer 2 is additionally made between the support structure 3 and the cladding 1 Polyurethane foam provided.
  • the holes 5 are used to mount the side wall 4 on the base of the electrolytic cell 6 by means of screws 10 (see also FIG. 2).
  • Fig. 2 shows part of an electrolytic cell with a section through a side wall 4. To avoid corrosion, this is also on the inside of the side wall 4 coated with a DD varnish as corrosion protection. Chlorine resistant seals 7 or 8 provide a seal of the gap between the cell cover 9 and the side wall 4 or between the cell bottom 6 and the side wall 4 to the exit of to prevent chlorine-containing gas 11 or salt solution 12.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Engineering & Computer Science (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
  • Electrolytic Production Of Metals (AREA)
  • Battery Electrode And Active Subsutance (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)
  • Laminated Bodies (AREA)
  • Building Environments (AREA)

Claims (4)

  1. Paroi latérale (4) protégée contre la corrosion, pour appareil pour l'admission de gaz de processus contenant du chlore, en particulier pour les cellules électrolytique, qui est caractérisée en ce que sur une structure métallique (3), on dispose un revêtement (1) de plaques éventuellement soudées ou chanfreinées, en poly(fluorure de vinylidène) (PVDF), poly(tétrafluoroéthylène-co-hexafluoropropylène) (FEP), poly(chlorure de vinyle) (PVC ou PVC-HT) ou polymère perfluoroalcoxy (PFA), qui peut être relié au fond de l'appareil (6) ou aux autres parties latérales (4') par des agents de fixation (10) amovibles.
  2. Paroi latérale suivant la revendication 1, caractérisée en ce que le revêtement (1) est fixé au montage avec une colle amovible sur la structure de support (3).
  3. Paroi latérale suivant les revendications 1 et 2, caractérisée en ce que la structure de support (3) est réalisée en acier ou en acier spécial.
  4. Paroi latérale suivant les revendications 1 à 3, caractérisée en ce qu'entre la structure de support (3) et le revêtement (1), on prévoit en plus une couche isolante (2) en mousse polymère à pores fermés, en particulier en mousse polyuréthanne.
EP98901940A 1997-01-10 1998-01-03 Revetement de paroi pour cellules electrolytiques Expired - Lifetime EP0951584B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19700533 1997-01-10
DE19700533A DE19700533A1 (de) 1997-01-10 1997-01-10 Wandverkleidung für Elektrolysezellen
PCT/EP1998/000017 WO1998030736A1 (fr) 1997-01-10 1998-01-03 Revetement de paroi pour cellules electrolytiques

Publications (2)

Publication Number Publication Date
EP0951584A1 EP0951584A1 (fr) 1999-10-27
EP0951584B1 true EP0951584B1 (fr) 2002-05-02

Family

ID=7817049

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98901940A Expired - Lifetime EP0951584B1 (fr) 1997-01-10 1998-01-03 Revetement de paroi pour cellules electrolytiques

Country Status (11)

Country Link
US (1) US6200437B1 (fr)
EP (1) EP0951584B1 (fr)
JP (1) JP2001508126A (fr)
CN (1) CN1243552A (fr)
AU (1) AU5861798A (fr)
BR (1) BR9807469A (fr)
CA (1) CA2277026A1 (fr)
DE (2) DE19700533A1 (fr)
ES (1) ES2176949T3 (fr)
RU (1) RU2198246C2 (fr)
WO (1) WO1998030736A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20060309A1 (it) * 2006-02-21 2007-08-22 De Nora Elettrodi Spa Testata per cella di elettrolisi a catodo di mercurio di soluzioni di cloruri alcalini

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3324023A (en) * 1963-01-09 1967-06-06 Hooker Chemical Corp Bipolar electrolytic cell for the production of gases
US3450621A (en) 1966-11-21 1969-06-17 Goodrich Co B F Chlorine cell with flexible elastomeric cover
BE790779A (fr) * 1971-11-02 1973-02-15 Ici Ltd Cellules d'electrolyse perfectionnees
US3962066A (en) * 1974-01-30 1976-06-08 Barber-Webb Resilient liner for an electrolytic cell
FR2303093A1 (fr) 1975-03-06 1976-10-01 Rhone Poulenc Ind Cellule d'electrolyse sans diaphragme, notamment pour l'obtention de chlorates de metaux alcalins
US4049531A (en) * 1976-07-19 1977-09-20 Ban Stephan C Electrolytic hypochlorite generator
US4139448A (en) * 1978-01-03 1979-02-13 Hooker Chemicals & Plastics Corp. Separating web - electrolytic compartment frames assembly for electrolytic apparatuses
US4218293A (en) * 1979-02-02 1980-08-19 Hooker Chemicals & Plastics Corp. Electrochemical apparatus and process for manufacturing halates
IT1164996B (it) * 1979-03-06 1987-04-22 Pirelli Coperchio per celle elettrolitiche
US4402809A (en) * 1981-09-03 1983-09-06 Ppg Industries, Inc. Bipolar electrolyzer
DE3138438C2 (de) * 1981-09-26 1984-07-05 W.C. Heraeus Gmbh, 6450 Hanau Elektrolysezelle
US4915803A (en) * 1988-09-26 1990-04-10 The Dow Chemical Company Combination seal and frame cover member for a filter press type electrolytic cell
DE9003162U1 (de) 1990-03-17 1990-05-23 Heraeus Elektroden GmbH, 6450 Hanau Elektrodenanordnung für elektrolytische Zwecke
US5141617A (en) * 1991-04-23 1992-08-25 The United States Of America As Represented By The United States Department Of Energy Electrochemical cell
US5185069A (en) * 1991-10-15 1993-02-09 Olin Corporation Liquid metal cathode electrochemical cell and cathode frame

Also Published As

Publication number Publication date
AU5861798A (en) 1998-08-03
EP0951584A1 (fr) 1999-10-27
CA2277026A1 (fr) 1998-07-16
DE19700533A1 (de) 1998-07-16
WO1998030736A1 (fr) 1998-07-16
DE59803975D1 (de) 2002-06-06
BR9807469A (pt) 2000-05-02
RU2198246C2 (ru) 2003-02-10
JP2001508126A (ja) 2001-06-19
ES2176949T3 (es) 2002-12-01
CN1243552A (zh) 2000-02-02
US6200437B1 (en) 2001-03-13

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