Membrane-electrode assembly, electrolytic cell employing the same, electrolytic-water sprayer, and method of sterilization

A membrane electrode assembly, electrolytic cell technology, applied in electrolytic assemblies, chemical instruments and methods, disinfection and other directions, can solve the problems of difficulty in obtaining size reduction, poor electrolyte operation performance, wide application, difficulty in ozonizing water, etc., to improve sterilization. Active, novel bactericidal effect, freshness-enhancing effect

Active Publication Date: 2009-08-05
DE NORA PERMELEC LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0046] (3) The power supply for ozone generation has high voltage and high frequency, making it difficult to achieve size reduction
[0047] (4) In the production equipment of ozonated water based on electric discharge, it takes a certain period of time (a wa

Method used

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  • Membrane-electrode assembly, electrolytic cell employing the same, electrolytic-water sprayer, and method of sterilization
  • Membrane-electrode assembly, electrolytic cell employing the same, electrolytic-water sprayer, and method of sterilization
  • Membrane-electrode assembly, electrolytic cell employing the same, electrolytic-water sprayer, and method of sterilization

Examples

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Effect test

example 1

[0222] A rod (diameter, 2 mm) made of niobium, on which a conductive diamond catalyst (doped agent boron concentration, 2,500ppm). On the separator, a commercial platinum wire (diameter, 0.4 mm) was helically wound as the cathode to obtain an anode-membrane-cathode assembly. The winding pitch is 4mm. Tubes (diameter, 4 mm) were bonded to the upper and lower parts of the assembly, and feed lines from a DC power source were connected to the respective electrodes to obtain an electrolysis cell. Pure water flows upward through the anode chamber at a rate of 40cc / min. Currents of 0.5A and 1A were made to flow individually. As a result, in these operations, the cell voltages were 13 V and 19 V, respectively, the ozonized water concentrations were 8 ppm and 21 ppm, and the ozone generation efficiencies were 13% and 12%, respectively. The water temperature at the outlet is about 30°C.

[0223] exist figure 1 In the trigger type injector shown, the electrolyzer is connected to a ...

example 2

[0228] Those parts of the membrane in the assembly of example 1, which constitute the two openings of the anode chamber, were fixed to a tube with a diameter of 4 mm. The resulting part was arranged in a second tube having an inner diameter of 5 mm to form a cathode chamber between the second tube and the membrane. Connect the feed wire terminal for the wire cathode to the cathode in the second tube. A 2 g / L aqueous solution of sodium chloride was fed to the anode chamber at a rate of 40 cc / min, and water was also fed to the cathode chamber in the same manner. Make a current of 1A flow. As a result, alkaline water containing hydrogen gas and having a pH of 11 and acidic water containing hypochlorite ions in an amount of 40 ppm can be simultaneously obtained.

example 3

[0230] The same test as Example 2 was performed except that tap water was fed to the anode and cathode chambers. As a result, ozonized water was produced at 0.5 A with a concentration of 4.5 ppm (current efficiency, 7.3%).

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Abstract

The present invention provides a membrane-electrode assembly, an electrolyte tank using the same, an electrolyte water injector and a disinfecting method. The membrane-electrode assembly comprises: at least one rod-form or tubular electrode; a tubular diaphragm disposed around the periphery of the electrode; and a wire-form counter electrode disposed around the periphery of the diaphragm, the diaphragm being fixed to the rod-form or tubular electrode with the wire-form counter electrode to thereby form an electrode chamber having a gas/liquid passage between the diaphragm and the rod-form or tubular electrode.

Description

technical field [0001] The present invention relates to a membrane electrode assembly for generating electrolytic water for disinfection, cleaning, etc., an electrolytic cell using the same, an electrolytic water injector including any electrolytic cell, and a disinfection method using these devices. Background technique [0002] Bactericide / Disinfectant: [0003] Chloride biocides such as sodium hypochlorite, calcium hypochlorite and dichloroisocyanuric acid have been widely used as biocides / disinfectants in most environments. Among these materials, hypochlorites including sodium hypochlorite are generally used from the standpoint of cost and effect. However, many proposals have been made in order to obtain the improvement of its sterilizing / disinfecting effect, which is required in various fields including the clinical field and the food industry (see, for example, JP-A-2001-253803, JP-A-2001-342496, and JP-A-2002-145710). [0004] Usually, such a bactericide / disinfecta...

Claims

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Application Information

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IPC IPC(8): C25B9/00C25B1/13C25B1/14C25B1/26C25B1/30A61L2/03C02F1/46C25B9/19
CPCC02F2201/003C02F1/467
Inventor 北折典之关户广太柴田友康铃木智久田中正志古田常人锦善则
Owner DE NORA PERMELEC LTD
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