JPS5550482A - Refining method of salt water for electrolysis of aqueous alkali chloride solution by diaphragm method or ion exchange membrane method - Google Patents

Refining method of salt water for electrolysis of aqueous alkali chloride solution by diaphragm method or ion exchange membrane method

Info

Publication number
JPS5550482A
JPS5550482A JP12121378A JP12121378A JPS5550482A JP S5550482 A JPS5550482 A JP S5550482A JP 12121378 A JP12121378 A JP 12121378A JP 12121378 A JP12121378 A JP 12121378A JP S5550482 A JPS5550482 A JP S5550482A
Authority
JP
Japan
Prior art keywords
salt water
cell
added
chloride solution
thence
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
JP12121378A
Other languages
Japanese (ja)
Other versions
JPS6126498B2 (en
Inventor
Hideaki Takagi
Akitsugu Kawada
Toshiyuki Nemoto
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.)
Adeka Corp
Original Assignee
Asahi Denka 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 Denka Kogyo KK filed Critical Asahi Denka Kogyo KK
Priority to JP12121378A priority Critical patent/JPS5550482A/en
Publication of JPS5550482A publication Critical patent/JPS5550482A/en
Publication of JPS6126498B2 publication Critical patent/JPS6126498B2/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)
  • Removal Of Specific Substances (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)

Abstract

PURPOSE:To obtain the salt water of minimum contamination of the membrane by adding the limited amount of the compound containing SH groups of the specified pH and temperature to the refined water obtained by adding alkali metal hydroxide and carbonate to an aqueous alkali chloride solution and refining the same by an ordinary method, and removing the precipitate having been formed. CONSTITUTION:The return salt water from an electrolytic cell is added with edible salt B in a dissolving cell 1, thence it is added with NaOH and Na2CO3C in a reaction cell 2. In a floating cell 3, the precipitate is separated. Then, the salt water is filtered 4 and is added with hydrochloric acid D to be controlled to pH 1-7 in a pH control cell 5, thence it is sent to a receiving cell 6, where polyvalent metal ions other than Ca and Mg as well as the compound E e.g. NaSH containing SH groups of mere than equivalent, preferably twice the equivalent of Cl2, ClO<->, ClO3<-> are added. Next, the salt water is filtered 7, after which it is controlled to pH 9.5-10.5 with alkali F in a pH control cell 8, thence it is treated in a chelate resin tower 9, whereby it is made to refined salt water G.
JP12121378A 1978-10-03 1978-10-03 Refining method of salt water for electrolysis of aqueous alkali chloride solution by diaphragm method or ion exchange membrane method Granted JPS5550482A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12121378A JPS5550482A (en) 1978-10-03 1978-10-03 Refining method of salt water for electrolysis of aqueous alkali chloride solution by diaphragm method or ion exchange membrane method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12121378A JPS5550482A (en) 1978-10-03 1978-10-03 Refining method of salt water for electrolysis of aqueous alkali chloride solution by diaphragm method or ion exchange membrane method

Publications (2)

Publication Number Publication Date
JPS5550482A true JPS5550482A (en) 1980-04-12
JPS6126498B2 JPS6126498B2 (en) 1986-06-20

Family

ID=14805668

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12121378A Granted JPS5550482A (en) 1978-10-03 1978-10-03 Refining method of salt water for electrolysis of aqueous alkali chloride solution by diaphragm method or ion exchange membrane method

Country Status (1)

Country Link
JP (1) JPS5550482A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002528378A (en) * 1998-10-30 2002-09-03 ソルヴェイ Method for producing aqueous sodium chloride solution

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002528378A (en) * 1998-10-30 2002-09-03 ソルヴェイ Method for producing aqueous sodium chloride solution

Also Published As

Publication number Publication date
JPS6126498B2 (en) 1986-06-20

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