JPS5647578A - Electrolysis of aqueous alkali chloride solution - Google Patents

Electrolysis of aqueous alkali chloride solution

Info

Publication number
JPS5647578A
JPS5647578A JP12420279A JP12420279A JPS5647578A JP S5647578 A JPS5647578 A JP S5647578A JP 12420279 A JP12420279 A JP 12420279A JP 12420279 A JP12420279 A JP 12420279A JP S5647578 A JPS5647578 A JP S5647578A
Authority
JP
Japan
Prior art keywords
electrolysis
air
cathode
warmed
chloride solution
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.)
Pending
Application number
JP12420279A
Other languages
Japanese (ja)
Inventor
Michiji Okai
Kazunari Igawa
Yoichi Hiraga
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.)
Tosoh Corp
Original Assignee
Toyo Soda Manufacturing Co Ltd
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 Toyo Soda Manufacturing Co Ltd filed Critical Toyo Soda Manufacturing Co Ltd
Priority to JP12420279A priority Critical patent/JPS5647578A/en
Publication of JPS5647578A publication Critical patent/JPS5647578A/en
Pending 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

Landscapes

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

Abstract

PURPOSE:To make it possible to operate by high current density and to prolong the useful life of an electrode by carrying out the electrolysis while the air warmed by contacting with an aqueous solution of a caustic alkali or an alkali chloride is generated air bubbles from the surface of a cathode into a cathode liquid. CONSTITUTION:An aqueous sodium chloride solution 15 is supplied in an annode chamber 3 and the diluted salt water 16 after electrolysis is withdrawn and the produced chlorine 18 is withdrawn as a product. Moreover, the sodium hydroxide produced in a cathode chamber 4 is taken out from an exhaust port 9 as a product. On the other hand, the air 22 is contacted with an aqueous sodium hydroxide solution with a temp. of 40 deg.C or more or a sodium chloride solution 23 with a temp. of 40 deg.C or more in a gas-liquid contact apparatus 24 to be warmed to 40-80 deg.C and, thereafter, supplied into a gas chamber 5. Oxygen in this air is diffused into an interior of a gas diffusion electrode 7 and reacted with water in the vicinity of a surface thereof to produce a hydroxyl group. Moreover, while at least a part of the warmed air is generated as air bubbles from the surface of the cathode 7, the electrolysis is carried out. Thereby, if electrolysis voltage is lowered to a large extent, the electrolysis by high current density can be carried out.
JP12420279A 1979-09-28 1979-09-28 Electrolysis of aqueous alkali chloride solution Pending JPS5647578A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12420279A JPS5647578A (en) 1979-09-28 1979-09-28 Electrolysis of aqueous alkali chloride solution

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12420279A JPS5647578A (en) 1979-09-28 1979-09-28 Electrolysis of aqueous alkali chloride solution

Publications (1)

Publication Number Publication Date
JPS5647578A true JPS5647578A (en) 1981-04-30

Family

ID=14879506

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12420279A Pending JPS5647578A (en) 1979-09-28 1979-09-28 Electrolysis of aqueous alkali chloride solution

Country Status (1)

Country Link
JP (1) JPS5647578A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5497600A (en) * 1978-01-20 1979-08-01 Asahi Glass Co Ltd Cathode for electrolysis of alkali chlorides

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5497600A (en) * 1978-01-20 1979-08-01 Asahi Glass Co Ltd Cathode for electrolysis of alkali chlorides

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