Electrooxidation ozone generator

Abstract

The invention relates to an electrooxidation ozone generator. The electrooxidation ozone generator comprises a housing forming an electrolytic tank, and a core part of an electrolytic electrode; the core part of the electrolytic electrode comprises an anode membrane-permeation electrode, a cathode membrane-permeation electrode, and an ion exchange membrane pasted between the anode membrane-permeation electrode and the cathode membrane-permeation electrode; the anode membrane-permeation electrode comprises a microporous plate base layer, an interlayer coated on the base layer, and a multifunctional dynamic membrane layer disposed on the interlayer surface; the cathode membrane-permeation electrode comprises a microporous plate base layer, an interlayer coated on the base layer, and a multifunctional dynamic membrane layer disposed on the interlayer surface, or comprises a microporous plate base layer and a multifunctional dynamic membrane layer disposed on the microporous plate base layer surface. The electrooxidation ozone generator comprises the following characteristics: firstly, by using the membrane-permeation electrodes with selective permeation effect, the permeation of raw material liquid to a catalyst side is controlled effectively; balanced bidirectional permeation effect is realized; the electric resistance and energy consumption of the generator are reduced; and the efficiency is improved. Secondly, with a controllable internal-pressure structure and self-balanced gas phase transmission channels, electrode reactions are ensured to be carried out at a controllable pressure; gas dissolved out from the anode has an ozone concentration of more than 20%; and the ozone generation efficiency is high. Thirdly, the generator has the characteristics of simple manufacturing and low cost.

Description

technical field [0001] The invention belongs to an electrochemical oxidation ozone generation device, in particular to an electro-oxidation ozone generator with a controllable internal pressure structure and a dynamic catalytic film layer at the gas generation part. Background technique [0002] Using water or water-based electrolyte as raw material, an ozone-oxygen mixed gas with a certain concentration can be obtained at the anode through an electrolysis device (ozone generator). Compared with the corona method, the electrochemical method has the characteristics of low voltage, high ozone concentration, and the generated gas does not contain harmful components such as NO3, so it is widely used in drinking water treatment, medical sanitation, sewage treatment, industrial bleaching, etc. There are obvious advantages in application. [0003] The electrolytic ozone generation technology emerged in the 1980s, and there have been many research and application reports. Generall...

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Problems solved by technology

However, in practical applications, the catalyst layer of the independent sheet structure needs to use (PTFE) and other binders, which increases the resistance of the catalyst layer itself and the contact resistance between the layers, resulting in high energy consumption and temperature rise; although in the form of electroplating A lead dioxide catalyst layer can be formed on the anode, but the resulting electrode layer is very uneven and easily broken, which causes the generator to have high resistance and a short service life; patent CN200610138715 is used on the surface and pores of porous titanium plates The ozone generator made by deposition catalyst method has the obvious disadvantages of long start-up time and high voltage in practical application due to the limitation of technology itself

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