[go: up one dir, main page]

EP0010284A3 - Process for the electrolysis of alkali chlorides - Google Patents

Process for the electrolysis of alkali chlorides Download PDF

Info

Publication number
EP0010284A3
EP0010284A3 EP79103962A EP79103962A EP0010284A3 EP 0010284 A3 EP0010284 A3 EP 0010284A3 EP 79103962 A EP79103962 A EP 79103962A EP 79103962 A EP79103962 A EP 79103962A EP 0010284 A3 EP0010284 A3 EP 0010284A3
Authority
EP
European Patent Office
Prior art keywords
electrolysis
membrane
chloride solution
cations
alkali
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.)
Withdrawn
Application number
EP79103962A
Other languages
German (de)
French (fr)
Other versions
EP0010284A2 (en
Inventor
Nikolaj Medic
Theodor Dr. Auel
Dieter Dr. Bergner
Jürgen Dr. Russow
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.)
Hoechst AG
Original Assignee
Hoechst 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 Hoechst AG filed Critical Hoechst AG
Publication of EP0010284A2 publication Critical patent/EP0010284A2/en
Publication of EP0010284A3 publication Critical patent/EP0010284A3/en
Withdrawn legal-status Critical Current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

Für die Elektrolyse einer wässrigen Alkalichlorid-Lösung in einer Memebran-Zelle mit perflorierter Kationenaustauscher-Memebran ist es wichtig, daß mög­ lichst wenig Kationen mehrwertiger Metalle, wie Calcium, vorhanden sind. Andernfalls kommt es u.a zu Ablagerungen im Inneren der Membran. Es wurde gefun­ den, daß sich die durch die genannten Kationen hervorgeru­ fenen Störungen wesentlich vermindern lassen, wenn der Alkalichlorid-Lösung eine aliphatische mehrbasische Pho­ sphonsäure oder deren Alkalisalz zugesertzt wird. For the electrolysis of an aqueous alkali chloride solution in a membrane cell with perforated Cation exchanger membrane, it is important that possible as few cations of multivalent metals as calcium, available. Otherwise, it happens to deposits inside the membrane. It was found the fact that they are caused by the cations mentioned open interference can be significantly reduced if the Alkali chloride solution an aliphatic polybasic Pho Sphonic acid or its alkali salt is added.

EP79103962A 1978-10-21 1979-10-15 Process for the electrolysis of alkali chlorides Withdrawn EP0010284A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19782845943 DE2845943A1 (en) 1978-10-21 1978-10-21 METHOD FOR ALKALICHLORIDE ELECTROLYSIS
DE2845943 1978-10-21

Publications (2)

Publication Number Publication Date
EP0010284A2 EP0010284A2 (en) 1980-04-30
EP0010284A3 true EP0010284A3 (en) 1980-05-14

Family

ID=6052801

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79103962A Withdrawn EP0010284A3 (en) 1978-10-21 1979-10-15 Process for the electrolysis of alkali chlorides

Country Status (4)

Country Link
US (1) US4236980A (en)
EP (1) EP0010284A3 (en)
JP (1) JPS5558378A (en)
DE (1) DE2845943A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4417961A (en) * 1981-03-30 1983-11-29 The Dow Chemical Company Membrane cell brine feed
US4381230A (en) * 1981-06-22 1983-04-26 The Dow Chemical Company Operation and regeneration of permselective ion-exchange membranes in brine electrolysis cells
US4515665A (en) * 1983-10-24 1985-05-07 Olin Corporation Method of stabilizing metal-silica complexes in alkali metal halide brines
US4618403A (en) * 1983-10-24 1986-10-21 Olin Corporation Method of stabilizing metal-silica complexes in alkali metal halide brines
JPS61166991A (en) * 1985-01-18 1986-07-28 Asahi Glass Co Ltd Salt electrolysis method
JPS61235587A (en) * 1985-04-12 1986-10-20 Asahi Glass Co Ltd Electrolyzing method
JPS6267185A (en) * 1985-09-20 1987-03-26 Asahi Glass Co Ltd Salt electrolysis method
US4830837A (en) * 1987-08-03 1989-05-16 Olin Corporation Process for removing aluminum from concentrated alkali metal halide brines

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3954581A (en) * 1975-07-22 1976-05-04 Ppg Industries, Inc. Method of electrolysis of brine
US3988223A (en) * 1975-10-28 1976-10-26 Basf Wyandotte Corporation Unplugging of electrolysis diaphragms

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL6901571A (en) * 1968-02-06 1969-08-08
BE795460A (en) * 1972-02-16 1973-08-16 Diamond Shamrock Corp PERFECTIONS RELATING TO ELECTROLYTIC TANKS

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3954581A (en) * 1975-07-22 1976-05-04 Ppg Industries, Inc. Method of electrolysis of brine
US3988223A (en) * 1975-10-28 1976-10-26 Basf Wyandotte Corporation Unplugging of electrolysis diaphragms

Also Published As

Publication number Publication date
DE2845943A1 (en) 1980-04-30
JPS5558378A (en) 1980-05-01
EP0010284A2 (en) 1980-04-30
US4236980A (en) 1980-12-02

Similar Documents

Publication Publication Date Title
EP0010284A3 (en) Process for the electrolysis of alkali chlorides
BE796739A (en) PROCESS FOR MANUFACTURING PURE CALCIUM SULPHATE IN THE WET ATTACK WITH PHOSPHORIC ACID
AT320678B (en) Electrolysis cell for the electrolytic decomposition of aqueous salt solutions
ES470870A1 (en) Process for the production of tenside-containing cation exchanger aluminosilicates
FR2487385B1 (en) PROCESS FOR THE ELECTROLYSIS OF AN AQUEOUS SOLUTION OF ALKALI METAL CHLORIDE WITH IMPLEMENTATION OF A CATION EXCHANGE MEMBRANE
ATA473782A (en) METHOD FOR PRODUCING LYE BY ELECTROLYZING AN ALKALINE METAL SALT SOLUTION
EP0183142A3 (en) Preparation process of lithium salts of anionic dyes, preferably with reactive groups
SE8304704D0 (en) PROCEDURE FOR REPLACING GYPS
SE388129B (en) WAY TO EXTRACT POLYVALENTAL METAL IONS FROM AUTOMATIC SOLUTIONS OR SUSPENSIONS OF THEIR SALTS THROUGH ACID PHOSPHORIUM COMPOUNDS
FR2445396B1 (en) METHOD FOR THE ELECTROLYSIS OF AN AQUEOUS SOLUTION OF ALKALI METAL CHLORIDE USING A CATION EXCHANGE MEMBRANE ELECTROLYTIC CELL
SE7701729L (en) SYSTEM FOR REMOVAL OF OXIDE LAYERS
DE566030C (en) Production of beryllium fluoride from a double fluoride of beryllium and an alkali metal
BE826551A (en) PROCESS FOR THE ELECTROCHEMICAL ELIMINATION OF FLUORIDE IONS FROM AQUEOUS MEDIA
FR2353513A1 (en) ADIPIC ACID DEPURATION PROCESS
DE831542C (en) Process for the production of chlorine dioxide
GB1144239A (en) Improvements in or relating to antimonic acid products having cation exchange capacity
JPS552708A (en) Preparation of sebacic acid diester
DE692412C (en) Process for the preparation of hydroxylammonium salts
AT302527B (en) Process for the preparation of 6- (D-α-amino-p-hydroxyphenylacetamido) -penicillanic acid with a low water content, or the sodium or potassium salt of this acid
DE539076C (en) Process for the production of ammonium sulfate by the alternating decomposition of calcium sulfate and ammonium carbonate
DE870417C (en) Process for the production of caffeine
DE500158C (en) Cooling brine
SU672152A1 (en) Method of purifying solutions used for acid treatment of phosphorites
DE456852C (en) Process for the production of sodium nitrate and blanc fixe
DE514590C (en) Production of hot, highly concentrated magnesium sulfate solutions

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Designated state(s): BE DE FR GB IT NL

AK Designated contracting states

Designated state(s): BE DE FR GB IT NL

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 19801021

RIN1 Information on inventor provided before grant (corrected)

Inventor name: AUEL, THEODOR, DR.

Inventor name: BERGNER, DIETER, DR.

Inventor name: MEDIC, NIKOLAJ

Inventor name: RUSSOW, JUERGEN, DR.