Gas-phase packed bed discharge plasma generating device

Abstract

The invention provides a gas-phase packed bed discharge plasma generating device, which comprises a plasma reactor shell body, a lower sealing end cover, an upper sealing end cover, a low-voltage electrode structure, a high-voltage electrode structure and a packed bed, wherein the upper and lower sealing end covers are connected to the upper and lower parts of the plasma reactor shell body; the upper sealing end cover is connected with a high-voltage electrode structure, and the lower sealing end cover is connected with a low-voltage electrode structure; the high-voltage electrode structure comprises a high-voltage screw rod, a high-voltage electrode plate, an adjusting hand wheel, a high-voltage power line and an upper insulating dielectric plate; the low-voltage electrode structure comprises a grounding power line, a low-voltage screw rod, a low-voltage electrode plate and a lower insulating dielectric plate; and the packed bed is fixed on the upper surface of the lower insulating dielectric plate. The gas-phase packed bed discharge plasma generating device disclosed by the invention can realize dielectric barrier discharge of different gas components, is convenient for observinga discharge phenomenon, can measure a spectrum in real time, realizes surface modification experiments of materials such as an adsorbent and the like, and realizes degradation experiments of liquid-phase pollutants in different gas environments.

Description

technical field [0001] The invention belongs to the field of experimental equipment, and in particular relates to a gas phase packed bed discharge plasma generating device. Background technique [0002] Dielectric barrier discharge has a simple structure, is easy to operate, and can generate large-area plasma regions and abundant active species. It is widely used in pollutant degradation and material surface modification, that is, samples to be treated are placed in the discharge gap. When modifying the surface of the material, in some current technologies, the material to be modified is usually placed directly on the lower insulating dielectric plate, and the modification is carried out in the atmospheric environment, ignoring the fixation of the material in the discharge area, resulting in modification To deal with the phenomenon of inhomogeneity, and the current dielectric barrier discharge is deficient in the discharge of various gas environments, the existing technology...

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Problems solved by technology

When modifying the surface of the material, in some current technologies, the material to be modified is usually placed directly on the lower insulating dielectric plate, and the modification is carried out in the atmospheric environment, ignoring the fixation of the material in the discharge area, resulting in modification To deal with the phenomenon of inhomogeneity, and the current dielectric barrier discharge is deficient in the discharge of various gas environments, the existing technology is to directly connect the ventilation pipe between the insulating dielectric plates, and the flow rate of the air flow in the insulating dielectric plates is not uniform, and then Affect the discharge condition and affect the modification effect of the material

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