DE3472686D1 - Electrolysis cell and method of generating halogen - Google Patents

Electrolysis cell and method of generating halogen

Info

Publication number
DE3472686D1
DE3472686D1 DE8484104849T DE3472686T DE3472686D1 DE 3472686 D1 DE3472686 D1 DE 3472686D1 DE 8484104849 T DE8484104849 T DE 8484104849T DE 3472686 T DE3472686 T DE 3472686T DE 3472686 D1 DE3472686 D1 DE 3472686D1
Authority
DE
Germany
Prior art keywords
cathode
overvoltage
low
cell
halogen
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
Application number
DE8484104849T
Other languages
German (de)
Inventor
Nora Oronzio De
Antonio Nidola
Gian Nicola Martelli
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.)
De Nora SpA
Original Assignee
Oronzio de Nora Impianti Elettrochimici SpA
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
Priority claimed from US06/490,515 external-priority patent/US4615775A/en
Application filed by Oronzio de Nora Impianti Elettrochimici SpA filed Critical Oronzio de Nora Impianti Elettrochimici SpA
Application granted granted Critical
Publication of DE3472686D1 publication Critical patent/DE3472686D1/en
Expired 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
    • C25B1/00—Electrolytic production of inorganic compounds or non-metals
    • C25B1/01—Products
    • C25B1/34—Simultaneous production of alkali metal hydroxides and chlorine, oxyacids or salts of chlorine, e.g. by chlor-alkali electrolysis
    • C25B1/46—Simultaneous production of alkali metal hydroxides and chlorine, oxyacids or salts of chlorine, e.g. by chlor-alkali electrolysis in diaphragm cells
    • 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
    • C25B9/17—Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof
    • C25B9/19—Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof with diaphragms
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
    • C25B9/60—Constructional parts of cells
    • C25B9/65—Means for supplying current; Electrode connections; Electric inter-cell connections

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
  • Electrodes For Compound Or Non-Metal Manufacture (AREA)

Abstract

Halogen is produced by electrolyzing an aqueous halide in a specially designed cell. The cell comprises an analyte chamber and a catholyte chamber separated by a permeable membrane or diaphragm, notably an ion exchange (generally cation exchange) polymer. At least one electrode comprises at least two sections. One section comprises a gas and electrolyte permeable layer, sheet or mat having a catalytic surtace, i.e. one having a low overvoltage, (low hydrogen overvoltage if the cathode and low halogen overvoltage if the anode). This layer is spaced from themembrane by a second portion comprising an electroconductive resiliently compressible layer or mat, which is in contact with the membrane on one side thereof, the other side thereof being in contact with the main cathode. This second or spacer section advantageously has an electrode surface having a higher overvoltage than the first electrode surface. Preferably the cathode has the above construction. Upon electrolysis of alkali metal chloride or other halide in such a cell and with a cathode of the type described above, a low voltage is obtained even at high current densities and the cathode efficiency is high.
DE8484104849T 1983-05-02 1984-04-30 Electrolysis cell and method of generating halogen Expired DE3472686D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/490,515 US4615775A (en) 1979-08-03 1983-05-02 Electrolysis cell and method of generating halogen

Publications (1)

Publication Number Publication Date
DE3472686D1 true DE3472686D1 (en) 1988-08-18

Family

ID=23948390

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8484104849T Expired DE3472686D1 (en) 1983-05-02 1984-04-30 Electrolysis cell and method of generating halogen

Country Status (4)

Country Link
EP (1) EP0124125B1 (en)
JP (1) JPH0670276B2 (en)
AT (1) ATE35700T1 (en)
DE (1) DE3472686D1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5599430A (en) * 1992-01-14 1997-02-04 The Dow Chemical Company Mattress for electrochemical cells
AU2003302453A1 (en) 2002-11-27 2004-06-18 Asahi Kasei Chemicals Corporation Bipolar zero-gap electrolytic cell
ITMI20060054A1 (en) * 2006-01-16 2007-07-17 Uhdenora Spa ELASTIC CURRENT DISTRIBUTOR FOR PERCOLATOR CELLS
IT1391774B1 (en) * 2008-11-17 2012-01-27 Uhdenora Spa ELEMENTARY CELL AND RELATIVE MODULAR ELECTROLISER FOR ELECTROLYTIC PROCESSES
EP2746429A1 (en) 2012-12-19 2014-06-25 Uhdenora S.p.A Electrolytic cell

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4105514A (en) * 1977-06-27 1978-08-08 Olin Corporation Process for electrolysis in a membrane cell employing pressure actuated uniform spacing
IT1122699B (en) * 1979-08-03 1986-04-23 Oronzio De Nora Impianti RESILIENT ELECTRIC COLLECTOR AND SOLID ELECTROLYTE ELECTROCHEMISTRY INCLUDING THE SAME
JPS56169782A (en) * 1980-06-03 1981-12-26 Asahi Glass Co Ltd Production of caustic alkali
JPS5693883A (en) * 1979-12-27 1981-07-29 Permelec Electrode Ltd Electrolytic apparatus using solid polymer electrolyte diaphragm and preparation thereof
DE3176766D1 (en) * 1980-10-21 1988-07-07 Oronzio De Nora Sa Electrolysis cell and method of generating halogen
JPS5837181A (en) * 1981-08-31 1983-03-04 Tokuyama Soda Co Ltd Electrolytic cell for electrolysis of aqueous alkali metal chloride solution
JPS5896886A (en) * 1981-12-04 1983-06-09 Asahi Glass Co Ltd Electrolyzing method for aqueous alkali metal salt solution

Also Published As

Publication number Publication date
JPS59208087A (en) 1984-11-26
JPH0670276B2 (en) 1994-09-07
EP0124125A2 (en) 1984-11-07
EP0124125A3 (en) 1985-05-15
EP0124125B1 (en) 1988-07-13
ATE35700T1 (en) 1988-07-15

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: DE NORA PERMELEC S.P.A., MAILAND/MILANO, IT

8339 Ceased/non-payment of the annual fee