Dust purification method and dust purification device

Abstract

The invention discloses a dust purification method and a dust purification device. The dust purification method comprises the steps that A1, subjecting activated carbon to particle removal treatment through a vibrating screen, wherein an air knife is arranged on the vibrating screen; A2, performing activated carbon particle removal treatment through a winnowing dust removal process at the downstream of the vibrating screen; and A3, collecting dust removed by the vibrating screen and an air screen through a dust collecting device. According to the dust purification method, small particles smaller than 1.2 mm in the activated carbon are removed by arranging the vibrating screen; and a part of residual fine dust on the surface of the large-particle activated carbon is removed through the airknife at the rear section of the vibrating screen, and then the residual fine dust on the surface of the large-particle activated carbon is deeply removed through the air screen at an outlet of the vibrating screen, so that the dust purification method provided by the invention effectively reduces the dust emission concentration of activated carbon flue gas purification.

Description

technical field [0001] The invention relates to the technical field of dust purification, in particular to a dust purification method. The invention also relates to a dust purification device. Background technique [0002] The sieving method is usually used to classify ordinary powder in activated carbon. However, at present, the smallest sieve has a pore size of only about 20 μm (ie about 600 mesh), and particles with a diameter of more than 1 μm can be captured by direct interception. Particles less than 1 μm are captured by inertial impact and diffusion interception. [0003] According to the process principle of activated carbon, after the activated carbon from the adsorption tower is adsorbed, through the processes of direct interception, inertial impact and diffusion interception, the surface and pores of the activated carbon are mixed with a large amount of fine particles such as dust. After entering the desorption tower, a large amount of activated carbon ultrafine...

AI Technical Summary

Problems solved by technology

After the analysis, some fine particles were removed by sieving (the pore size of the screen is 1.2mm), but the ultrafine particles attached to the surface of activated carbon and in the pores are difficult to remove under the adsorption of activated carbon, resulting in the dust emission concentration of activated carbon flue gas purification higher

Images