GB1121408A - Process for reducing the mercury loss in a process for the electrolytic production of alkali hydroxide - Google Patents

Process for reducing the mercury loss in a process for the electrolytic production of alkali hydroxide

Info

Publication number
GB1121408A
GB1121408A GB5807866A GB5807866A GB1121408A GB 1121408 A GB1121408 A GB 1121408A GB 5807866 A GB5807866 A GB 5807866A GB 5807866 A GB5807866 A GB 5807866A GB 1121408 A GB1121408 A GB 1121408A
Authority
GB
United Kingdom
Prior art keywords
mercury
reducing
solution
electrolysis
alkali hydroxide
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
GB5807866A
Inventor
Juergen Fehling
Josef Gotzmann
Otto Koenig
Hans Hoffman
Guenter Zschieschang
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.)
VER VOLKSEIGENER BETR E ELETRO
Original Assignee
VER VOLKSEIGENER BETR E ELETRO
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 VER VOLKSEIGENER BETR E ELETRO filed Critical VER VOLKSEIGENER BETR E ELETRO
Priority to GB5807866A priority Critical patent/GB1121408A/en
Publication of GB1121408A publication Critical patent/GB1121408A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5272—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using specific organic precipitants
    • 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
    • C25B1/36—Simultaneous production of alkali metal hydroxides and chlorine, oxyacids or salts of chlorine, e.g. by chlor-alkali electrolysis in mercury cathode cells

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Water Supply & Treatment (AREA)
  • Environmental & Geological Engineering (AREA)
  • Hydrology & Water Resources (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Metallurgy (AREA)
  • Materials Engineering (AREA)
  • Electrochemistry (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)

Abstract

A process for reducing the mercury losses occurring in the electrolysis of an aqueous alkali metal chloride solution using a mercury cathode comprises precipitation of the mercury occurring in the dilute alkali metal chloride solution which leaves the cell after electrolysis; the precipitation being effected after dechlorination of said dilute solution by the addition of sulphurcontaining compounds, e.g. Na2S with or without FeCl2, or organic or inorganic reducing agents, e.g. metals, aldehydes or carboxylic acids, and the precipitate being removed from the solution by centrifuging, decantering or filtering. The dilute solution is then resaturated and, after purification, returned to the electrolysis cells.
GB5807866A 1966-12-29 1966-12-29 Process for reducing the mercury loss in a process for the electrolytic production of alkali hydroxide Expired GB1121408A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5807866A GB1121408A (en) 1966-12-29 1966-12-29 Process for reducing the mercury loss in a process for the electrolytic production of alkali hydroxide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5807866A GB1121408A (en) 1966-12-29 1966-12-29 Process for reducing the mercury loss in a process for the electrolytic production of alkali hydroxide

Publications (1)

Publication Number Publication Date
GB1121408A true GB1121408A (en) 1968-07-24

Family

ID=10480716

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5807866A Expired GB1121408A (en) 1966-12-29 1966-12-29 Process for reducing the mercury loss in a process for the electrolytic production of alkali hydroxide

Country Status (1)

Country Link
GB (1) GB1121408A (en)

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