Nanocluster-plasma haze dust removal method and device

Abstract

The invention provides a nanocluster-plasma haze dust removal method and apparatus thereof. The haze dust in the air can be taken as the condensation nuclei and forms nanocluster with oversaturated water steam; and finally the nanocluster is charged in a plasma field so as to remove the haze dust. The method comprises the following steps: introducing gas containing haze dust particles and saturated water into a heater, heating until the water steam reaches an overheated steam state; introducing the mixed gas of overheated water steam and gas into a convergent-divergent nozzle to carry out expansion with nearly unchanged entropy; then introducing the mixed gas into an expansion pipe, wherein in the expansion pipe, the water steam of the mixed gas reaches an oversaturated state, the water steam molecules are condensed on the surfaces of haze dust particles taken as condensation nuclei to form nanocluster; introducing the nanocluster into a plasma generating pipe, carrying out charged deflection, at the same time, dissolving and absorbing the gas-phase pollutants generated during the plasma discharge process, collecting and discharging the sewage by the sewage collecting electrode, introducing the gas into a condenser finally so as to condense water steam into liquid water, recycling or discharging the liquid water, and adjusting the air humidity at the same time.

Description

technical field [0001] The invention proposes a technology for removing haze and dust by using supersaturated water vapor and using haze and dust in the air as condensation nuclei to form nano-clusters, and the clusters are charged and removed in a plasma field. Background technique [0002] In recent years, with the development of industries such as fuel and coal, the increase of vehicles and other factors, the haze weather has gradually increased. Haze weather has a greater impact on the respiratory system. The main hazards to health in smog and dust are aerosol particles with a diameter of less than 10 microns, especially the PM2.5 particles we usually refer to, which will be deposited in the upper and lower respiratory tracts and alveoli respectively, causing acute rhinitis and acute bronchitis For patients with chronic respiratory diseases such as bronchial asthma, chronic bronchitis, and obstructive emphysema, smog can cause acute attack or acute exacerbation of the c...

AI Technical Summary

Problems solved by technology

But the main problem that exists in this scheme is, one, large-scale air plasma field can produce ozone, and ozone itself can be used in aspects such as water purification, deodorization, disinfection, but when the concentration is high, people will have discomfort, usually It is believed that when a person can smell the ozone smell, the ozone concentration is already too high

Ozone is an unavoidable product in the process of air plasma. Users of Beon air purifiers often report that there is ozone odor; 2. The dust particles are too small to efficiently absorb negative charges. Therefore, this method can effectively remove larger particles. , but when the particles are small, such as PM2.5 dust removal efficiency is often not high

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