Atmospheric pressure pulse discharge plasma generating device of suspended conductive electrode

Abstract

The invention discloses an atmospheric pressure pulse discharge plasma generating device of a suspended conductive electrode, and belongs to the field of gas pollution control engineering such as indoor air purification, human health of waste gas treatment and environmental pollution control. According to the invention, a suspension conductive electrode is placed between a line-line high-voltage electrode and a needle-needle high-voltage electrode, and a pulse high-voltage power supply is applied to the high-voltage electrode and the low-voltage electrode; and low-temperature plasmas are generated in two areas between the high-voltage electrode and the suspended conductive electrode and between the low-voltage electrode and the suspended conductive electrode. When treated gas passes through the plasma areas of the two areas, the effects of particulate matter charging, particulate matter collection, gaseous pollutant degradation, bacterium or virus inactivation and the like are generated, and the gas is purified. By increasing the distance between the electrodes and the number of electrode pairs, the low-temperature plasma and the processing gas amount are increased, and the advantages of simple structure and high spark voltage are achieved.

Description

technical field [0001] The invention belongs to the field of human health and environmental pollution control of indoor air purification and waste gas treatment, and relates to an atmospheric pressure pulse discharge plasma generator with suspended conductive electrodes. Background technique [0002] Atmospheric pressure low-temperature plasma does not require vacuum equipment, and its interior is rich in high-concentration high-energy electrons, reactive oxygen species, reactive nitrogen species, ultraviolet light, etc., and has been widely studied and applied in the field of gas pollution control engineering. [0003] Atmospheric pressure low-temperature plasma generation methods mainly include corona discharge method, dielectric barrier discharge method and sliding arc discharge method. Among them, the corona discharge method uses electrode structures that form a non-uniform electric field, such as needle-needle, needle-plate, line-line, line-plate, coaxial line-tube, etc...

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Problems solved by technology

Among them, the corona discharge method uses electrode structures that form a non-uniform electric field, such as needle-needle, needle-plate, line-line, line-plate, coaxial line-tube, etc. The discharge is in the form of a small radius of curvature It is generated near the needle and thread, and then extends to the plate and cylinder wall. It has the advantages of large electrode spacing and large plasma space. The disadvantage is that the area with high plasma intensity is limited to the area around the needle and thread, and the application effect is not high.

The dielectric barrier discharge method is to place an insulating medium between the electrodes to prevent the transition from spark discharge to arc discharge. Its electrode forms include body discharge, surface discharge and packed bed discharge. With high chemical activity and high application effect, the disadvantage is that the distance between electrodes is small and the resistance is large when dealing with large flow gas

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