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Electrolysis system and electrolysis method for the same

A technology of electrolysis device and diaphragm, applied in the direction of electrolysis components, electrolysis process, chemical instruments and methods, etc., can solve problems such as disadvantages, and achieve the effect of suppressing the rise of electrolysis voltage, stabilizing electrolysis operation for a long time, and suppressing deposition

Inactive Publication Date: 2014-05-07
AQUAECOS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conventionally proposed techniques for inhibiting scale formation are unfavorable, requiring cost and manpower or sacrificing part of performance

Method used

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  • Electrolysis system and electrolysis method for the same
  • Electrolysis system and electrolysis method for the same
  • Electrolysis system and electrolysis method for the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0080] In Example 1, an SPE type electrolytic cell (SPE is a registered trademark of Permelec Electrode Ltd.) was used as a solid polymer electrolyte type electrolytic device as figure 1 An example of a two-chamber electrolysis device is shown. For the anode base material 4a and the cathode base material 2a, a SUS304 screen with a size of 30mm×30mm expanded metal is used (screen size: sheet thickness 1mm, SW3.5mm, and specific surface area 1.1m 2 / m 2 ).

[0081] A commercially available 5% dispersion of cation exchange resin (trade name: Nafion (registered trademark) DE520—Nafion is a registered trademark of EI du Pont de Nemours and Company) is applied to the parts other than the connection part with the current-carrying member 6 The substantially entire surface of the cathode 2 is then baked at 170 degrees Celsius, whereby the substantially entire surface of the cathode 2 is coated with an alkaline earth metal antifouling film 8 containing cation exchange resin. In addition, ...

Embodiment 2

[0094] In Example 2, use such as image 3 The diaphragm electrolysis device shown. For Cathode 2 and Anode 4, a Ti screen with a size of 16mm×16mm is used (screen specifications: sheet thickness 1mm, SW3.5mm and specific surface area 1.1m 2 / m 2 ). A commercially available 5% dispersion of cation exchange resin (trade name: Nafion (registered trademark) DE520—Nafion is a registered trademark of EI du Pont de Nemours and Company) was applied to substantially the entire surface of the cathode 2, and then Bake at 150 degrees Celsius, thereby forming an alkaline earth metal antifouling film 8 containing cation exchange resin. The cathode 2 and the anode 4 are arranged in parallel at an interval of about 1.5 mm, and are separated by a hydrophilic porous membrane 9 (neutral membrane) of 20 mm×20 mm. These were installed in the center of the cathode chamber 1 and the anode chamber 3 of the diaphragm electrolysis apparatus.

[0095] Tap water was supplied to the anode chamber 3 and the...

Embodiment 3

[0101] In Example 3, use such as Figure 4 The three-chamber electrolysis device shown. The three-compartment electrolysis apparatus includes the anode 4 and the cathode 2, the anion exchange membrane 10 (trade name: TOSFLEX SF48-registered trademark of Tosoh Corporation) as the diaphragm of the anode compartment 3 and the intermediate compartment 12 prepared as in Example 1, and the intermediate compartment 12 and The cation exchange membrane 11 between the cathode chambers 1 (trade name: Nafion117-registered trademark of EI du Pont de Nemours and Company). This structure is a device that simulates a production device that uses brine as a raw material to produce so-called strong acidic water containing hypochlorous acid in the anode chamber 3 and alkaline ionized water in the cathode chamber.

[0102] The diluted brine maintained at 30 g / L was circulated and supplied to the intermediate chamber 12 of the electrolytic cell, and tap water was supplied to the anode chamber 3 and th...

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Abstract

The present invention provides an electrolysis system and an electrolysis method for the same in which non-purified water containing a trace amount of alkali earth metal ions, such as calcium ion and magnesium ion is applied as raw material, having a configuration in which the raw material water is supplied to the cathode compartment (1), featuring that scale of the alkali earth metals including hydroxide can be prevented from depositing on the surface of the cathode (2) provided in the cathode compartment (1). The present invention prevents scales of hydroxide and others of the alkali earth metal from depositing on the cathode surface (2), by covering the substantially entire surface of the cathode (2) with the cation exchange resin-contained, alkali earth metal scale-preventive film in the electrolysis system having a configuration comprising a diaphragm (5), an anode compartment (3) separated by the diaphragm (5), a cathode compartment (1) separated by the diaphragm (5), an anode (4) provided in the anode compartment (3), a cathode (2) provided in the cathode compartment (1), and raw material water containing alkali earth metal ions supplied to the cathode compartment.

Description

Technical field [0001] The present invention relates to an electrolysis device and an electrolysis method thereof, in which unpurified water containing trace amounts of alkaline earth metal ions such as calcium ions and magnesium ions is used as a raw material, has a configuration in which raw water is supplied to a cathode chamber, and is characterized by preventing alkaline earth Scales such as metalloid hydroxides are deposited on the surface of the cathode. Background technique [0002] Water treatment using electrolysis is widely used for the purpose of producing functional water, producing ozone water, and producing electrolyzed water through electrolysis, sterilizing, and decomposing and removing harmful substances. The reactor used for these treatments generally has an anode, a cathode, and an ion exchange membrane disposed between the two or a porous diaphragm housed in a frame, and is called an electrolytic cell or an electrolytic chamber. Such an electrolytic cell or ...

Claims

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Application Information

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IPC IPC(8): C02F1/461C25B9/23
CPCC02F1/46104C02F2001/46119C02F2001/46138C02F2001/46142C02F2001/46147C02F2201/46115C02F2201/46195
Inventor 新田英郎细沼正志福岛安则大日方亮仁
Owner AQUAECOS
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