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1. (WO1991009158) ELECTROCHEMICAL PROCESS FOR PRODUCING CHLORINE DIOXIDE SOLUTIONS FROM CHLORITES
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1991/009158 International Application No.: PCT/US1990/007592
Publication Date: 27.06.1991 International Filing Date: 20.12.1990
Chapter 2 Demand Filed: 16.07.1991
IPC:
C25B 1/26 (2006.01) ,C25B 1/34 (2006.01)
C CHEMISTRY; METALLURGY
25
ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
B
ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON- METALS; APPARATUS THEREFOR
1
Electrolytic production of inorganic compounds or non-metals
24
of halogens or compounds thereof
26
Chlorine; Compounds thereof
C CHEMISTRY; METALLURGY
25
ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
B
ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON- METALS; APPARATUS THEREFOR
1
Electrolytic production of inorganic compounds or non-metals
34
Simultaneous production of alkali metal hydroxides and chlorine, its oxyacids or salts
Applicants:
OLIN CORPORATION [US/US]; 350 Knotter Drive, P.O. Box 586 Cheshire, CT 06410-0586, US
Inventors:
KACZUR, Jerry, L.; US
CAWLFIELD, David, W.; US
Agent:
HAGLIND, James, B. ; Olin Corporation 350 Knotter Drive P.O. Box 586 Cheshire, CT 06410-0586, US
Priority Data:
453,55220.12.1989US
Title (EN) ELECTROCHEMICAL PROCESS FOR PRODUCING CHLORINE DIOXIDE SOLUTIONS FROM CHLORITES
(FR) PROCEDE DE PRODUCTION PAR VOIE ELECTROCHIMIQUE DE SOLUTIONS DE DIOXYDE DE CHLORE A PARTIR DE CHLORITES
Abstract:
(EN) A process for electrolytically producing an aqueous solution of chlorine dioxide in an electrolytic cell (10) having an anode compartment (12), a cathode compartment (30), and at least one ion exchange compartment (20) between the anode compartment (12) and the cathode compartment (30), the process comprising feeding an aqueous solution of an alkali metal chlorite to the ion exchange compartment (20), electrolyzing an anolyte (16) in the anode compartment (12) to generate hydrogen ions, passing the hydrogen ions from the anode compartment (12) through a cation exchange membrane (18) into the ion exchange compartment (20) to displace alkali metal ions and produce an aqueous solution of chlorine dioxide, and passing alkali metal ions from the ion exchange compartment (20) into the cathode compartment (30).
(FR) Un procédé permet de produire par électrolyse une solution aqueuse de dioxyde de chlore dans une cellule électrolytique (10) ayant un compartiment à anode (12), un compartiment à cathode (30) et au moins un compartiment (20) d'échange ionique agencé entre le compartiment à anode (12) et le compartiment à cathode (30). Selon ce procédé, on introduit une solution aqueuse d'un chlorite d'un métal alcalin dans le compartiment d'échange ionique (20), on électrolyse un anolyte (16) dans le compartiment à anode (12) afin de générer des ions d'hydrogène, on fait passer les ions d'hydrogène du compartiment à anode (12) au compartiment d'échange ionique (20), à travers une membrane d'échange cationique (18), afin de déplacer les ions du métal alcalin et de produire une solution aqueuse de dioxyde de chlore, et on fait passer les ions du métal alcalin du compartiment d'échange ionique (20) au compartiment à cathode (30).
Designated States: AU, BB, BG, BR, CA, FI, HU, JP, KR, LK, MC, MG, MW, NO, RO, SD, SU
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, NL, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CM, GA, ML, MR, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
AU1991071448