GB506394A - Improvements relating to the electrolysis of salt solutions - Google Patents

Improvements relating to the electrolysis of salt solutions

Info

Publication number
GB506394A
GB506394A GB32519/37A GB3251937A GB506394A GB 506394 A GB506394 A GB 506394A GB 32519/37 A GB32519/37 A GB 32519/37A GB 3251937 A GB3251937 A GB 3251937A GB 506394 A GB506394 A GB 506394A
Authority
GB
United Kingdom
Prior art keywords
acid
electrolysis
alkali
chloride
chlorine
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.)
Expired
Application number
GB32519/37A
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie AG
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 IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Publication of GB506394A publication Critical patent/GB506394A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25BELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B15/00Operating or servicing cells
    • C25B15/08Supplying or removing reactants or electrolytes; Regeneration of electrolytes

Landscapes

  • Chemical & Material Sciences (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

506,394. Electrolysis of alkali chlorides. 1. G. FARBENINDUSTRIE AKT.-GES. Nov. 25, 1937, No. 32519. Convention date, Dec. 31, 1936. [Class 41] Salt solutions containing chlorine and alkali hypochlorite and obtained in the electrolysis of alkali chloride, more especially by the amalgamation process, are treated with an acid such as hydrochloric acid outside the cell to decompose the hypoclilorite, blown out and/or subjected to reduced pressure, and treated with fresh alkali chloride. The acidification and blowing out may be combined by blowing out with a gas which dissolves to form an acid, such as carbon dioxide. A reducing agent may be added, such as sulphurous acid or its salts or hydrogen sulphide, to eliminate residual chlorine or chlorate, and sulphurous acid is preferably used at above 50‹ C. Iron, manganese and calcium salts as well as sulphates may be precipitated by the addition of hydroxides, carbonates, and barium compounds such as barium carbonate. When the chlorine evolved contains hydrogen, this is converted to hydrogen chloride, and the residual chlorine is washed free of hydrogen chloride with the salt solution to be resaturated, which is thereby acidified.
GB32519/37A 1936-12-31 1937-11-25 Improvements relating to the electrolysis of salt solutions Expired GB506394A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE506394X 1936-12-31

Publications (1)

Publication Number Publication Date
GB506394A true GB506394A (en) 1939-05-25

Family

ID=6546544

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32519/37A Expired GB506394A (en) 1936-12-31 1937-11-25 Improvements relating to the electrolysis of salt solutions

Country Status (1)

Country Link
GB (1) GB506394A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2787591A (en) * 1949-06-23 1957-04-02 Olin Mathieson Electrolytic method of depositing alkali metal at a mercury cathode
US3115389A (en) * 1960-12-15 1963-12-24 Ici Ltd Treatment of brine
US4405465A (en) 1982-06-30 1983-09-20 Olin Corporation Process for the removal of chlorate and hypochlorite from spent alkali metal chloride brines

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2787591A (en) * 1949-06-23 1957-04-02 Olin Mathieson Electrolytic method of depositing alkali metal at a mercury cathode
US3115389A (en) * 1960-12-15 1963-12-24 Ici Ltd Treatment of brine
US4405465A (en) 1982-06-30 1983-09-20 Olin Corporation Process for the removal of chlorate and hypochlorite from spent alkali metal chloride brines

Similar Documents

Publication Publication Date Title
GB1520784A (en) Process for the purification of electrolysis brine
GB481467A (en) Process for the treatment of gases from furnaces for the production of aluminium
GB506394A (en) Improvements relating to the electrolysis of salt solutions
GB845511A (en) Improvements relating to the production of metal hydroxides
GB1038164A (en) Process of producing sulphuric acid
US2089913A (en) Improvements in the production of chlorine dioxide
US2092944A (en) Manufacture of water soluble chlorites
GB644309A (en) Manufacture of alkali metal chlorites starting from chlorine dioxide
GB668724A (en) Process of making hydrophilic carbon black
GB695877A (en) Improvements in or relating to process for electrolyzing alkali metal brines
US1446185A (en) Process for the production of potassium sulphate
GB672047A (en) Improvements in the manufacture of chlorine dioxide
US1866775A (en) Process for the production of zinc hydrocarbonate
SU121118A1 (en) Chlorine dioxide production method
US1756247A (en) Making magnesium chloride from chlorine and alpha magnesium base
GB672197A (en) Manufacture of chlorites
GB287892A (en) Method for separation of tin from tin plated scraps or the like
US2403940A (en) Production of magnesium thiosulphate and magnesium oxide from dolomite
GB240401A (en) A process for the production of lead compounds from ores, metallurgical products, waste-products from chemical processes and the like
GB323205A (en) Improvements in or relating to the manufacture of calcium hypochlorite
GB414862A (en) Improvements in the production of chlorinated rubber
GB508530A (en) Improvements in or relating to the manufacture of titanium pigments
US2225923A (en) Preparation of hypochlorites
GB618548A (en) Process for obtaining sulphuric acid and common salt by treatment of solid sodium sulphate and/or bisulphate with hydrochloric acid
GB1074286A (en) Improvements in and relating to the production of chlorine dioxide