DE50111075D1 - Chloralkali electrolysis process in membrane cells with electrolysis of untreated evaporated salt - Google Patents

Chloralkali electrolysis process in membrane cells with electrolysis of untreated evaporated salt

Info

Publication number
DE50111075D1
DE50111075D1 DE50111075T DE50111075T DE50111075D1 DE 50111075 D1 DE50111075 D1 DE 50111075D1 DE 50111075 T DE50111075 T DE 50111075T DE 50111075 T DE50111075 T DE 50111075T DE 50111075 D1 DE50111075 D1 DE 50111075D1
Authority
DE
Germany
Prior art keywords
anode
electrolysis
cathode
membrane
sodium 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 - Lifetime
Application number
DE50111075T
Other languages
German (de)
Inventor
Jakob Dr Ing Joerissen
Simon Dipl Ing Schnitzler
Ulrich Dipl Ing Stemick
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Priority to DE50111075T priority Critical patent/DE50111075D1/en
Application granted granted Critical
Publication of DE50111075D1 publication Critical patent/DE50111075D1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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

Abstract

Chlor-alkali electrolysis comprises using an electrolysis cell having an anode chamber with an anode separated from a cathode chamber with a cathode by a membrane. Water is fed to the side of the cathode chamber and a saturated sodium chloride (NaCl) solution is fed to the side of the anode chamber. A mixture of aqueous sodium hydroxide and hydrogen gas is produced by electrolysis on the cathode side, and chlorine gas is produced on the anode side forming a lean sol. The membrane is in the acid state. The mixture of aqueous sodium hydroxide and hydrogen gas is removed on the cathode outlet of the electrolysis cell and the chlorine gas and oxygen are removed on the anode side of the cell. An Independent claim is also included for an apparatus for carrying out the process. Preferred Features: The chlorine gas removed on the anode side is free from lean sol. The aqueous sodium hydroxide has a concentration of less than 20, preferably 2-5 wt.% NaOH. The membrane is a cation exchange membrane, preferably made of a polymer derivative with sulfonyl groups. The polymer is a polymer based on perfluorinated hydrocarbons. The aqueous sodium hydroxide and the chlorine are used in the production of a chlorine bleaching solution. The anode is coated with mixed oxides based on iridium oxide and tantalum oxide.
DE50111075T 2000-06-24 2001-06-15 Chloralkali electrolysis process in membrane cells with electrolysis of untreated evaporated salt Expired - Lifetime DE50111075D1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE50111075T DE50111075D1 (en) 2000-06-24 2001-06-15 Chloralkali electrolysis process in membrane cells with electrolysis of untreated evaporated salt

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10031018A DE10031018B4 (en) 2000-06-24 2000-06-24 Chloralkali electrolysis process in membrane cells with electrolysis of untreated evaporated salt
DE50111075T DE50111075D1 (en) 2000-06-24 2001-06-15 Chloralkali electrolysis process in membrane cells with electrolysis of untreated evaporated salt

Publications (1)

Publication Number Publication Date
DE50111075D1 true DE50111075D1 (en) 2006-11-09

Family

ID=7646799

Family Applications (2)

Application Number Title Priority Date Filing Date
DE10031018A Expired - Fee Related DE10031018B4 (en) 2000-06-24 2000-06-24 Chloralkali electrolysis process in membrane cells with electrolysis of untreated evaporated salt
DE50111075T Expired - Lifetime DE50111075D1 (en) 2000-06-24 2001-06-15 Chloralkali electrolysis process in membrane cells with electrolysis of untreated evaporated salt

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE10031018A Expired - Fee Related DE10031018B4 (en) 2000-06-24 2000-06-24 Chloralkali electrolysis process in membrane cells with electrolysis of untreated evaporated salt

Country Status (4)

Country Link
EP (1) EP1167579B1 (en)
AT (1) ATE340884T1 (en)
DE (2) DE10031018B4 (en)
DK (1) DK1167579T3 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004085709A1 (en) * 2003-03-25 2004-10-07 Gablenko Vyacheslav Georgievic Device for synthesising oxidants from agueous sodium chloride solution
DE102015003911A1 (en) 2015-03-27 2016-09-29 Eilenburger Elektrolyse- Und Umwelttechnik Gmbh Process for the disinfection of pool, drinking and service water as well as for the production of a disinfectant concentrate

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4230544A (en) * 1979-08-31 1980-10-28 Ionics Inc. Method and apparatus for controlling anode pH in membrane chlor-alkali cells
US4528077A (en) * 1982-07-02 1985-07-09 Olin Corporation Membrane electrolytic cell for minimizing hypochlorite and chlorate formation
DE29718331U1 (en) * 1997-10-17 1998-01-22 Dinotec Gmbh Electrolysis plant for the production of an aqueous sodium hypochlorite solution

Also Published As

Publication number Publication date
EP1167579B1 (en) 2006-09-27
DK1167579T3 (en) 2007-01-08
ATE340884T1 (en) 2006-10-15
EP1167579A1 (en) 2002-01-02
DE10031018B4 (en) 2007-02-22
DE10031018A1 (en) 2002-01-31

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