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1. EP1980527 - METHOD AND APPARATUS FOR SYNTHESIZING HYPOCHLOROUS ACID

Office
European Patent Office
Application Number 07707518
Application Date 26.01.2007
Publication Number 1980527
Publication Date 15.10.2008
Publication Kind A1
IPC
C01B 11/04
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF
11Oxides or oxyacids of halogens; Salts thereof
04Hypochlorous acid
C02F 1/46
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1Treatment of water, waste water, or sewage
46by electrochemical methods
C25B 1/26
CCHEMISTRY; METALLURGY
25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
BELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON- METALS; APPARATUS THEREFOR
1Electrolytic production of inorganic compounds or non-metals
24of halogens or compounds thereof
26Chlorine; Compounds thereof
C25B 11/10
CCHEMISTRY; METALLURGY
25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
BELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON- METALS; APPARATUS THEREFOR
11Electrodes; Manufacture thereof not otherwise provided for
04characterised by the material
10Electrodes based on barrier-type metals, e.g. titanium
CPC
C01B 11/04
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; ; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
11Oxides or oxyacids of halogens; Salts thereof
04Hypochlorous acid
C01B 11/06
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; ; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
11Oxides or oxyacids of halogens; Salts thereof
04Hypochlorous acid
06Hypochlorites
C02F 1/32
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1Treatment of water, waste water, or sewage
30by irradiation
32with ultra-violet light
C02F 1/4674
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1Treatment of water, waste water, or sewage
46by electrochemical methods
461by electrolysis
467by electrochemical disinfection; by electrooxydation or by electroreduction
4672by electrooxydation
4674with halogen or compound of halogens, e.g. chlorine, bromine
C02F 1/725
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1Treatment of water, waste water, or sewage
72by oxidation
725by catalytic oxidation
C02F 1/727
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1Treatment of water, waste water, or sewage
72by oxidation
727using pure oxygen or oxygen rich gas
Applicants OSAKA TITANIUM TECHNOLOGIES CO
Inventors AZUMA KAZUOMI
OGASAWARA TADASHI
SHIMOSAKI SHINJI
KATAKURA KATSUMI
Designated States
Priority Data 2006020597 30.01.2006 JP
Title
(DE) VERFAHREN UND VORRICHTUNG ZUR SYNTHESE VON HYPOCHLORSÄURE
(EN) METHOD AND APPARATUS FOR SYNTHESIZING HYPOCHLOROUS ACID
(FR) PROCEDE DE SYNTHESE DE L'ACIDE HYPOCHLOREUX ET APPAREIL CORRESPONDANT
Abstract
(EN)
Hypochlorous acid is produced economically without the supply of electricity energy from outside. To actualize the production, a photoelectric cell having a titanium oxide electrode 1 and a counter electrode 2 is placed in an electrolyte solution 3 containing a metal chloride. Under the environment that oxygen can be supplied to the counter electrode 2 of the photoelectric cell in the electrolyte solution 3, the titanium oxide electrode 1 is irradiated with light.

(FR)
La présente invention concerne un procédé permettant de fabriquer de l'acide hypochloreux de façon économique, sans apport d'énergie électrique extérieure. Plus spécifiquement, une cellule photoélectrique composée d'une électrode (1) en oxyde de titane et d'une contre-électrode (2) est placée dans une solution d'électrolyte (3) contenant un chlorure métallique. L'électrode (1) en oxyde de titane est soumise à une irradiation lumineuse dans des conditions d'alimentation en oxygène de la contre-électrode (2) de la cellule photoélectrique dans la solution d'électrolyte (3).