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EP0124125A3 - Electrolysis cell and method of generating halogen - Google Patents

Electrolysis cell and method of generating halogen Download PDF

Info

Publication number
EP0124125A3
EP0124125A3 EP84104849A EP84104849A EP0124125A3 EP 0124125 A3 EP0124125 A3 EP 0124125A3 EP 84104849 A EP84104849 A EP 84104849A EP 84104849 A EP84104849 A EP 84104849A EP 0124125 A3 EP0124125 A3 EP 0124125A3
Authority
EP
European Patent Office
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.)
Granted
Application number
EP84104849A
Other versions
EP0124125A2 (en
EP0124125B1 (en
Inventor
Oronzio De Nora
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
Priority to AT84104849T priority Critical patent/ATE35700T1/en
Publication of EP0124125A2 publication Critical patent/EP0124125A2/en
Publication of EP0124125A3 publication Critical patent/EP0124125A3/en
Application granted granted Critical
Publication of EP0124125B1 publication Critical patent/EP0124125B1/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.
EP84104849A 1983-05-02 1984-04-30 Electrolysis cell and method of generating halogen Expired EP0124125B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84104849T ATE35700T1 (en) 1983-05-02 1984-04-30 ELECTROLYTIC CELL AND PROCESS FOR THE PRODUCTION OF HALOGENS.

Applications Claiming Priority (2)

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
US490515 1983-05-02

Publications (3)

Publication Number Publication Date
EP0124125A2 EP0124125A2 (en) 1984-11-07
EP0124125A3 true EP0124125A3 (en) 1985-05-15
EP0124125B1 EP0124125B1 (en) 1988-07-13

Family

ID=23948390

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84104849A Expired EP0124125B1 (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
ES2533254T3 (en) 2002-11-27 2015-04-08 Asahi Kasei Chemicals Corporation Bipolar electrolytic cell, without interstices
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

Citations (4)

* 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
EP0050373A1 (en) * 1980-10-21 1982-04-28 Oronzio De Nora S.A. 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

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Patent Citations (4)

* 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
EP0050373A1 (en) * 1980-10-21 1982-04-28 Oronzio De Nora S.A. 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

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
CHEMICAL ABSTRACTS, Vol. 99, July 1983, Nr. 2, Page 448, Nr. 12849r, COLUMBUS, OHIO, (US); & JP-A-58 037 181 (TOKUYAMA SODA CO.) (04-03-1983) *
PATENTS ABSTRACTS OF JAPAN, Vol. 7, Nr. 195 (C-183)[1340], August 25, 1983; & JP-A-58 096 886 (ASAHI GLASS K.K.) (09-06-1983) *

Also Published As

Publication number Publication date
JPS59208087A (en) 1984-11-26
DE3472686D1 (en) 1988-08-18
JPH0670276B2 (en) 1994-09-07
EP0124125A2 (en) 1984-11-07
EP0124125B1 (en) 1988-07-13
ATE35700T1 (en) 1988-07-15

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