JPS5647576A - Preparation of sodium sulphate, sodium hydroxide and chlorine from mixed solution of sodium chloride and sodium sulphate - Google Patents

Preparation of sodium sulphate, sodium hydroxide and chlorine from mixed solution of sodium chloride and sodium sulphate

Info

Publication number
JPS5647576A
JPS5647576A JP12326079A JP12326079A JPS5647576A JP S5647576 A JPS5647576 A JP S5647576A JP 12326079 A JP12326079 A JP 12326079A JP 12326079 A JP12326079 A JP 12326079A JP S5647576 A JPS5647576 A JP S5647576A
Authority
JP
Japan
Prior art keywords
sodium
sodium sulphate
pipe
sodium chloride
tank
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
JP12326079A
Other languages
Japanese (ja)
Inventor
Saburo Maruko
Sunao Tomoguchi
Yoshiharu Takasaki
Masaaki Kurumaya
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.)
Nippon Chemical Plant Consultant Co Ltd
Tokuyama Corp
Original Assignee
Nippon Chemical Plant Consultant Co Ltd
Tokuyama Corp
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 Nippon Chemical Plant Consultant Co Ltd, Tokuyama Corp filed Critical Nippon Chemical Plant Consultant Co Ltd
Priority to JP12326079A priority Critical patent/JPS5647576A/en
Publication of JPS5647576A publication Critical patent/JPS5647576A/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 recover the titled chemicals from a mixture of sodium chloride and sodium sulphate by subjecting a sodium chloride-sodium sulphate eutectic composition liquid obtained by concentrating a sodium chloride-sodium sulphate mixed solution and separating sodium sulphate by precipitation or the composition liquid in the vicinity thereof to electrolysis. CONSTITUTION:For example, a dust of an electric dust collector (EP ash) of a pulp mill is dissolved in water in a dissolving tank (a) and, after NaOH, Na2CO3 etc. is added, the obtained solution is introduced in a stationary tank (b) and Mg compound, Ca compound or the like precipitated therein are withdrawn from a pipe 2. The overflow solution of the tank (b) is introduced into an evaporation boiler (c) and concentrated by steam from a pipe 19. The precipitated sodium sulphate is withdrawn from a pipe 5 and the sodium chloride-sodium sulphate eutectic composition liquid is further concentrated in an evaporation boiler (d) to precipitate the sodium chloride-sodium sulphate mixture. This precipitate is dissolved again in water from a pipe 9 in a dissolving tank (e). A part of the residual liquid after precipitation in the boiler (d) is purged by a pipe 7. The dissolving solution is electrolyzed in an electrolytic tank (f) and a Cl2 gas and a NaOH solution preduced therein are introduced into a sodium hypochlorite reaction tower (g) and reacted therein.
JP12326079A 1979-09-27 1979-09-27 Preparation of sodium sulphate, sodium hydroxide and chlorine from mixed solution of sodium chloride and sodium sulphate Pending JPS5647576A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12326079A JPS5647576A (en) 1979-09-27 1979-09-27 Preparation of sodium sulphate, sodium hydroxide and chlorine from mixed solution of sodium chloride and sodium sulphate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12326079A JPS5647576A (en) 1979-09-27 1979-09-27 Preparation of sodium sulphate, sodium hydroxide and chlorine from mixed solution of sodium chloride and sodium sulphate

Publications (1)

Publication Number Publication Date
JPS5647576A true JPS5647576A (en) 1981-04-30

Family

ID=14856153

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12326079A Pending JPS5647576A (en) 1979-09-27 1979-09-27 Preparation of sodium sulphate, sodium hydroxide and chlorine from mixed solution of sodium chloride and sodium sulphate

Country Status (1)

Country Link
JP (1) JPS5647576A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61194189A (en) * 1985-01-28 1986-08-28 イー・アイ・デユポン・デ・ニモアス・アンド・カンパニー Improved electrolysis of sulfate-containing brine
NL1006340C2 (en) * 1997-06-17 1998-12-21 Rafael Technologie En Manageme Method and device for recovering metals.

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS541298A (en) * 1977-06-06 1979-01-08 Tsurumi Soda Kk Process for purifying aqueous sodium chrolide solution containing glauber*s salt

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS541298A (en) * 1977-06-06 1979-01-08 Tsurumi Soda Kk Process for purifying aqueous sodium chrolide solution containing glauber*s salt

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61194189A (en) * 1985-01-28 1986-08-28 イー・アイ・デユポン・デ・ニモアス・アンド・カンパニー Improved electrolysis of sulfate-containing brine
JPS6252034B2 (en) * 1985-01-28 1987-11-02 Ii Ai Deyuhon De Nimoasu Ando Co
NL1006340C2 (en) * 1997-06-17 1998-12-21 Rafael Technologie En Manageme Method and device for recovering metals.
WO1998058090A3 (en) * 1997-06-17 1999-03-18 Waart Michael Wilhelmus Hendri A method and a device for recovering metals comprising dissolving, concentrating and electrowinning means with rotatable cathode

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