Plasma sterilization device, preparation method of sterilization gas and sterilization method

Abstract

The invention relates to a plasma sterilization device, a preparation method of sterilization gas and a sterilization method. The plasma sterilization device comprises a gliding arc discharge reactor, a gas flow circulating device and a sealed cavity. The gas flow circulating device comprises a gas inlet end, a gas outlet end and a fan; the gas inlet end and the gas outlet end respectively communicate with the sealed cavity, and the gas flow circulating device hermetically communicates with the sealed cavity through the gas inlet end and the gas outlet end; the gliding arc discharge reactor comprises a power supply and two electrodes; the power supply is connected with the electrodes; the gas outlet end is an insulating high-temperature-resistant pipe or is connected with an insulating high-temperature-resistant pipe, and the electrodes are arranged in the insulating high-temperature-resistant pipe; and plasma sliding arcs are blown out from the electrode area under the action of the gas flow circulating device. The plasma sterilization device is simple in structure; gas in the space circularly flows in the insulating high-temperature-resistant pipe and forms sliding arc discharge for multiple times, so that the sterilization activity and timeliness of plasma gas in the sealed space are improved; and the plasma sterilization device has transient stability and is a green, environment-friendly and residue-free sterilization method.

Description

technical field [0001] The invention belongs to the technical field of sterilization and disinfection of air and environment, and in particular relates to a plasma sterilization device, a preparation method of a sterilization gas and a sterilization method. Background technique [0002] Various harmful bacteria and viruses exist in public spaces, living environments, and the surfaces of objects. General sterilization methods, such as ultraviolet sterilization and alcohol hydrogen peroxide sterilization, have problems such as sterilization loopholes and incompleteness. Commonly used sterilization methods are physical sterilization methods, such as ultra-high pressure sterilization, high-voltage electric field sterilization, and radiation sterilization. Although these sterilization methods can kill bacteria and viruses existing on the surface and space of objects to a certain extent, they will destroy the tissue shape of the product and The sterilization efficiency is low and ...

AI Technical Summary

Problems solved by technology

The sliding arc discharge in industrial applications is characterized by high temperature and low energy utilization rate; generally, the high temperature direct blowing mode of the sliding arc is used to achieve the purpose of sterilization, and the electrode structure of the sliding arc discharge is complex, requiring high temperature resistance and water cooling system, and the manufacturing cost is relatively high. high

Industrial sliding arc discharge plasma is mainly used for high-temperature combustion, the active material in the product has a short life, the air has only undergone ionization once, the sterilization effect and efficiency are low, the action area is limited to the discharge area, and it is mostly used for domestic water purification and sterilization

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