JPS5792185A - Electrolyzing method for potassium chloride - Google Patents

Electrolyzing method for potassium chloride

Info

Publication number
JPS5792185A
JPS5792185A JP55166618A JP16661880A JPS5792185A JP S5792185 A JPS5792185 A JP S5792185A JP 55166618 A JP55166618 A JP 55166618A JP 16661880 A JP16661880 A JP 16661880A JP S5792185 A JPS5792185 A JP S5792185A
Authority
JP
Japan
Prior art keywords
koh
side chain
soln
aqueous
cathode
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
JP55166618A
Other languages
Japanese (ja)
Other versions
JPS6327430B2 (en
Inventor
Riichi Tanaka
Kyoji Kimoto
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.)
Asahi Kasei Corp
Asahi Chemical Industry Co Ltd
Original Assignee
Asahi Chemical Industry Co Ltd
Asahi Kasei Kogyo KK
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 Asahi Chemical Industry Co Ltd, Asahi Kasei Kogyo KK filed Critical Asahi Chemical Industry Co Ltd
Priority to JP55166618A priority Critical patent/JPS5792185A/en
Publication of JPS5792185A publication Critical patent/JPS5792185A/en
Publication of JPS6327430B2 publication Critical patent/JPS6327430B2/ja
Granted 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 stably manufacture KOH of high purity and concn. at low power unit by electrolyzing an aqueous KCl soln. unde specified conditions using a cation exchange membrane having a composite structure composed of fluorinated polymers each having fluoroalkylsulfonic acid (salt) group in the side chain. CONSTITUTION:When an aqueous KCl soln. is electrolyzed using an electrolytic cell divided into anode and cathode chambers by a cation exchange membrane to manufacture KOH and gaseous Cl2, the following conditions are satisfied. The membrane is provided with a composite structure composed of >=2 kinds of fluorinated polymers different from each other in specific electic conductivity and each having -(CF2)3SO3M (where M is H, a metal or NH4) in the side chain or part of the side chain. The concn. of the aqueous KOH soln. produced in the cathode chamber is adjusted to 3.5-12N. The Ca and Mg content of the aqueous KCl slon. fed to the anode chamber is restricted to <=0.5ppm. The current density during electrolysis is regulated to 25-50A/dm<2>. The surface layer of the multiple membrance made of fluorinated polymer with lowe specific electric conductivity is faced the cathode side.
JP55166618A 1980-11-28 1980-11-28 Electrolyzing method for potassium chloride Granted JPS5792185A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55166618A JPS5792185A (en) 1980-11-28 1980-11-28 Electrolyzing method for potassium chloride

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55166618A JPS5792185A (en) 1980-11-28 1980-11-28 Electrolyzing method for potassium chloride

Publications (2)

Publication Number Publication Date
JPS5792185A true JPS5792185A (en) 1982-06-08
JPS6327430B2 JPS6327430B2 (en) 1988-06-02

Family

ID=15834637

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55166618A Granted JPS5792185A (en) 1980-11-28 1980-11-28 Electrolyzing method for potassium chloride

Country Status (1)

Country Link
JP (1) JPS5792185A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0753534A2 (en) * 1995-07-10 1997-01-15 Asahi Glass Company Ltd. Cation exchange membrane for electrolysis and process for producing potassium hydroxide of high purity

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0753534A2 (en) * 1995-07-10 1997-01-15 Asahi Glass Company Ltd. Cation exchange membrane for electrolysis and process for producing potassium hydroxide of high purity
EP0753534A3 (en) * 1995-07-10 1997-10-15 Asahi Glass Co Ltd Cation exchange membrane for electrolysis and process for producing potassium hydroxide of high purity
US5716504A (en) * 1995-07-10 1998-02-10 Asahi Glass Company Ltd. Cation exchange membrane for electrolysis and process for producing potassium hydroxide of high purity
CN1054404C (en) * 1995-07-10 2000-07-12 旭硝子株式会社 Cation exchange membrane for electrolysis and process for producing potassium hydroxide of high purity

Also Published As

Publication number Publication date
JPS6327430B2 (en) 1988-06-02

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