Membrane electrode electrolysis ozone generator and preparation process thereof

An ozone generator and membrane electrode technology, applied in the direction of electrodes, electrolysis process, electrolysis components, etc., can solve the problems of difficult membrane electrode area, high material cost, breakdown of cation exchange membrane, etc., to solve the problem of uneven current distribution, The effect of uniform particle distribution and material cost reduction

Pending Publication Date: 2018-12-11
胡松
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0024] 1. The cathode catalyst uses precious metal platinum, which has high material cost. The preparation of platinum carbon powder into an "independent" diaphragm is manual operation, and the consistency of the diaphragm quality is difficult to control; the process of self-made carbon-supported platinum catalyst is complicated
[0025] 2. In more than ten years of long-term production and practice, it was found that the c

Method used

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  • Membrane electrode electrolysis ozone generator and preparation process thereof
  • Membrane electrode electrolysis ozone generator and preparation process thereof
  • Membrane electrode electrolysis ozone generator and preparation process thereof

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Embodiment approach

[0067] see Figure 4-Figure 10 , the embodiment of the preparation process of a kind of above-mentioned membrane electrode electrolysis ozone generator of the present invention, comprises the following steps;

[0068] (1) A sealing ring 4 is arranged on the concave surface of the cathode diversion_fastening plate 3, and a cathode microporous plate 2 is arranged in the sealing ring 4, and the Ti 2 o 3 Particle 1-a or the Ti 2 o 3 The mixture of particle 1.1 and separator particle 1.2 is filled on the cathode microporous plate 2 in the sealing ring 4, and the accumulated Ti 2 o 3 Granules 1.1 or Ti 2 o 3 The particles 1.1 and the separated particle mixture 1.2 are scraped to form a cathode catalyst particle layer 1, which is flush with the top surface of the sealing ring 4 (such as Figure 7 shown);

[0069] (2) Under the parallel downward pressure of the press, make the cathode catalyst particle layer 1 pressure to 100-200N / cm 2 , forming a layer of cathode catalyst pa...

Embodiment 1

[0074]Cathode structure preparation: set the sealing ring 4 on the cathode diversion_fastening plate 3, and set the cathode inside the sealing ring 4 (φ39 mm (outer diameter) × φ34 mm (inner diameter) × 3 mm (thick)) made of fluorine rubber The outer diameter of the microporous plate 2 and the cathode microporous plate 2 (such as a titanium microporous plate) are equal to the inner diameter of the sealing ring 4 . 180 purpose Ti 2 o 3 Particles 1.1 are filled into the sealing ring 4, scraped and leveled with the sealing ring 4 ( Figure 7 ). Under the parallel downward pressure of the press ( Figure 8 ), so that the pressure of the cathode catalyst particle layer 1 reaches 100-200N / cm 2 , the cathode catalyst particle layer 1 is basically formed. The cathode microporous plate 2 is a titanium microporous plate, and the pores of the titanium microporous plate are 40-80 μm.

[0075] Then, the cation exchange membrane 5 (such as: DuPont Nafion @ 117 film) be spread on the ...

Embodiment 2

[0078] Cathode structure preparation: set the sealing ring 4 on the cathode diversion_fastening plate 3, and set the cathode inside the sealing ring 4 (φ39 mm (outer diameter) × φ34 mm (inner diameter) × 3 mm (thick)) made of fluorine rubber The outer diameter of the microporous plate 2 and the cathode microorifice plate 2 are equal to the inner diameter of the sealing ring 4 . 180 purpose Ti 2 o 3 Granules 1.1 and 180-mesh polytetrafluoroethylene particles 1.2 are mixed evenly at a ratio of 100:5, then filled into the sealing ring 4, scraped and leveled with the sealing ring 4 ( Figure 7 ). Under the parallel downward pressure of the press ( Figure 8 ), so that the pressure of the cathode catalyst particle layer 1 reaches 100-200N / cm 2 , the cathode catalyst particle layer 1 is basically formed. The cathode microporous plate 2 is a titanium microporous plate, and the pores of the titanium microporous plate are 40-80 μm.

[0079] Then, put a cation exchange membrane 5 ...

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Abstract

The invention provides a membrane electrode electrolysis ozone generator and a preparation process thereof. The membrane electrode electrolysis ozone generator comprises a positive ion exchange membrane, a cathode structure and an anode structure, wherein the cathode structure and the anode structure are respectively arranged at two sides of the positive ion exchange membrane. The membrane electrode electrolysis ozone generator is characterized in that a sealing ring is arranged on a cathode flow guide-fastening plate; a cathode micropore plate is put into the sealing ring to be tightly attached to the cathode flow guide-fastening plate; a cathode catalyst is put into the sealing ring to be attached to the cathode micropore plate; the cathode structure, the positive ion exchange membrane and the anode structure are fastened into a whole by fastening elements. The cathode catalyst is a cathode catalyst particle layer formed by Ti2O3 particles or Ti2O3 particle and isolate particle mixtures; the material cost of the cathode catalyst of the membrane electrode electrolysis ozone generator is reduced. After the tight pressing by force, the contact of the fastened cathode catalyst particle layer and the positive ion exchange membrane is more uniform; the problem of current distribution nonuniformity of the membrane electrode electrolysis ozone generator is solved; the service life ofthe membrane electrode electrolysis ozone generator is effectively prolonged.

Description

technical field [0001] The invention belongs to the technical field of electrochemical preparation of ozone, and relates to a cathode catalyst structure and a process of a membrane electrode electrolytic ozone generator, in particular to a membrane electrode electrolytic ozone generator and a preparation process thereof. Background technique [0002] Ozone has been used by humans for more than 100 years, and it will be used more widely and deeply in the future. [0003] There are several ways to artificially prepare ozone. Generally, there are two types of methods used in practice: the high-voltage corona method using air or oxygen as raw material, and the electrochemical electrolysis method using deionized water as raw material. [0004] The membrane electrode electrolytic ozone generator is a specific product of the electrochemical electrolysis method. [0005] The membrane electrode electrolytic ozone generator uses deionized water as raw material, the cathode electrolys...

Claims

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Application Information

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IPC IPC(8): C25B1/13C25B9/10C25B11/06C25B9/23
CPCC25B1/13C25B9/23C25B11/073
Inventor 胡松
Owner 胡松
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