Bag Filter

The working principle of bag filter is that the dusty air flow enters the cylindrical filter bag from the lower orifice plate. When passing through the pores of the filter material, the dust is trapped on the filter material, and the clean gas passing through the filter material is discharged from the outlet. The dust deposited on the filter material can fall off from the surface of the filter material and fall into the ash hopper under the action of mechanical vibration.

Working principle:

When the flue gas passes through the bag filter, the filter material fiber screens, intercepts, inertia, diffusion, adhesion, static electricity and weight the dust is kept on the surface of the filter bag to achieve the separation of dust and gas, and to achieve the purpose of dust removal and purification of flue gas.

The working process of bag dust collector:

Flue gas into the bag dust catcher, interception, deposition of dust filter bag surface, when the dust layer after reaching a certain thickness, the resistance of the filter bag after rising, permeability decline, through the ash removal device at this time the settlement of powder layer peeling, restore the resistance of the filter bag, so the bag filter is a kind of periodic collect dust and soot cleaning work process, different types of soot cleaning bag filter structure and a different way.

Bag filter is classified by way of dust removal:

Dust removal is the decisive factor to make bag dust collector can work continuously for a long time. The basic requirement of dust removal is to quickly and evenly peel off the dust deposited on the filter bag, and usually require to maintain a certain dust layer, and do not damage the filter bag and consume less power. The characteristics of dust removal are important basis for the classification of bag filter. It can be divided into five categories: mechanical vibration type, reverse blowing type, rotary reverse blowing type, pulse blowing type and air box pulse type.