Ultrafine particle deduster

Abstract

The invention relates to an ultrafine particle deduster used for treating industrial fumes. Specifically, an electro-bag compound deduster of the second-grade filtration mode is improved, an onflow vortex mechanism is arranged between the outlet of a filter bag dedusting mechanism and the inlet of an induced draft fan, and the onflow vortex mechanism comprises an onflow vortex chamber, a fume inlet tube and a fume outlet tube; the onflow vortex chamber is in bucket shape of which the cross section is an inversed isosceles trapezoid, and the bottom of the onflow vortex chamber is connected withan ash bucket chamber. Secondary treatment fume which contains finer particulate matters enters the fume inlet tube; airflow downwards deflects after passing through an air deflector and enters the onflow vortex chamber, and finer particulate matters and the inner wall of the onflow vortex chamber diffuse and collide to accelerate ultrafine particles to precipitate, thus separating ultrafine particulate matters from fume. The filter efficiency of the ultrafine particle of the invention can reach above 99.99%; under the condition that the resistance of the deduster body is smaller than 1000Pa(other conditions are same), an anode or cathode fiber filter bag of which the mesh aperture is 5 mu m is used, and the outlet concentration of the deduster is smaller than 15mg / Nm<3>.

Description

Technical field [0001] The invention belongs to air pollution treatment and environmental protection equipment, and specifically relates to a dust collector equipment used for industrial smoke and dust treatment and capable of filtering fine particles with high efficiency. Background technique [0002] The smoke and dust emitted by metallurgical plants, chemical plants, cement plants, waste incineration plants, and electrolytic aluminum plants contain a large number of fine particles. When fine particles enter the human body, they can cause diseases such as bronchitis, cardiovascular disease, emphysema, and asthma. According to research: every 10μg / m increase in the concentration of fine particles 3 , The death rate of humans will increase by 15%, and the death rate of heart disease will increase by 8%-18%. The development of soot and dust removal technology is the direction of the development of circular economy. The collected fine particles can be used as raw materials for the ...

AI Technical Summary

Problems solved by technology

[0006] However, because these electric bag composite dust collectors adopt a two-stage filtration method, the filtration efficiency for fine particles is limited, and part of the fine particles will escape through the filter bag. Although the mass ratio of this part of dust is small, the particle volume is very small , the number is still very large, it is very harmful to people, and further filtration is required, and once the filter bag is damaged, it is easy to cause environmental pollution accidents

Images