Self-cleaned plasma air conditioning method and device

Abstract

The invention discloses a self-cleaned plasma air conditioning method and device. A plasma dust collection principle is that PM2.5 dust haze particulates are supplied with charges and are captured bya high voltage electric field. Three problems can be caused, namely, PM2.5 particulates of larger sizes can be easily charged and captured, very fine PM2.5 particulates such as dust haze smaller than0.3 micrometers can easily escape from a plasma air conditioning electric field of an HEPA filtering net; after the dust haze is adsorbed to a dust collection electrode for a certain amount, a dust collection effect can be rapidly degraded if the filtering net is not cleaned in time; ozone and nitric oxides are inevitable byproducts in plasma air discharge. By adopting the method and the device disclosed by the invention, dust haze particulates are combined and aggregated with water mist to form large clusters which are further fed into a plasma charge zone and a dust charge zone, and then theparticulates can be easily charged and collected by the electric field; in addition, the water mist captured onto a dust collection electrode forms water droplets which flow down from the dust collection electrode, then the dust haze particulates on the dust collection electrode can be carried away, and a function of cleaning the dust collection electrode can be achieved; charges are adsorbed bythe water mist, so that the generation rate of ozone and nitric oxides is reduced, and in addition, due to photocatalytic decomposition of the ozone and the nitric oxides, the ozone and the nitric oxides can be remarkably degraded, and the concentrations can be remarkably reduced.

Description

technical field [0001] The field of the invention belongs to the technical field of electrode environment treatment, and in particular relates to a self-cleaning plasma air conditioning method and device. Background technique [0002] Plasma air conditioning technology integrates multiple functions such as sterilization, dust removal, decomposition of formaldehyde and TVOC, and has broad application prospects in many fields. However, fine PM2.5 particles, such as haze less than 0.3 microns, can easily escape from the plasma air conditioning device or HEPA filter, and if the dust collected on the dust collection electrode is not cleaned in time, it will seriously affect the The effect of air conditioning. In addition, when plasma is generated by discharge in the air, the by-products ozone and nitrogen oxides are unavoidable, and the effect of low-power plasma on degrading harmful gases such as formaldehyde and TVOCs is not ideal, which severely restricts the use of plasma te...

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Problems solved by technology

[0003] In terms of plasma industrial waste gas treatment, the plasma power is relatively large. Although it is not sensitive to ozone and nitrogen oxide indicators, the waste gas stays in the plasma reaction zone for a short time and leaves the reaction zone without sufficient reaction, resulting in low efficiency. , and the energy consumption is too high, which is also a key factor restricting the wide application of plasma industrial waste gas treatment technology

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