Plasma purifier with core-shell structure porous ball filter packing

Abstract

The invention belongs to the field of low temperature plasma application, and specifically relates to a plasma purifier provide with a core-shell porous spherical filtering filling material. The plasma purifier is characterized in that the core-shell porous balls are arranged between discharge electrodes of plasma, and thus the core-shell porous balls can be taken as the filtering filling material and can also be used as the discharge intermediate electrode as well. Each core-shell porous ball comprises a conductor core, an insulation shell, and a catalyst coating. The insulation shell is porous, thus the surface area of the insulation shell is large, and the absorption performance of the insulation shell is strong, so the core-shell porous balls are suitable for being used as a filtering filling material; moreover, the conductor core is easily polarized by an electric field, and thus the core-shell porous balls can also be used as an intermediate electrode for gas discharging. The core-shell porous balls have a very strong absorption performance and light catalyzing performance on pollutants, and the plasma has a strong decomposing performance on pollutants, so the plasma purifier can greatly improve the one-time purification efficiency, is capable of maintaining the cleanness, strong absorption performance and light catalyzing performance of the porous balls at any time, and can be widely applied to sewage treatment, health water production, activated water production, and purification of industrial tail gas, automobile tail gas, and indoor air.

Description

technical field [0001] The invention belongs to the application field of low-temperature plasma, and in particular relates to a plasma purifier provided with a core-shell structure porous ball filter filler. Background technique [0002] Materials with high porosity and high surface area, such as ceramic porous balls, medical stone porous balls and quartz porous balls, have strong adsorption capacity for pollutants, and have been widely used in water filtration systems as filter fillers. However, in the current water filtration systems using porous balls as filter fillers, there is no effective self-cleaning method for the filter materials, and new porous ball filter fillers need to be replaced regularly. Regular maintenance not only increases the material cost, but also increases the maintenance cost of the filtration system, and causes inconvenience to users. Once the maintenance is not timely, not only the water quality cannot be purified, but also the secondary pollutio...

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Problems solved by technology

However, the discharge voltage is proportional to the distance between the two electrodes. The increase in the distance between the electrodes will also increase the discharge voltage. Moreover, porous balls with a higher dielectric constant, such as ceramic ball porous balls and medical stone porous balls, are added between the electrodes. And quartz porous balls, etc., the strong electric field mainly falls on the porous balls, which will further increase the discharge voltage. Excessive discharge voltage will increase the cost and energy consumption of the plasma generator

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