When the dust-containing gas enters the boiler bag filter, the dust with large particles and large specific gravity settles under the action of gravity, which is exactly the same as the sedimentation chamber. When the particle diameter of the dust is larger than the gap between the fibers of the filter material, the dust is blocked when the airflow passes, which is called screening. When the airflow passes through the filter material, it can pass around the fiber and still move in the original direction, and the cockroach collides with the filter material to be caught. The light dust, which moves with the airflow, is very close to the airflow line and can bypass the fiber. However, after they collide with the gas molecules that are doing thermal motion, they change the original direction of motion, which increases the chance of dust and fiber contact, so that the dust can be captured. The smaller the diameter of the filter fiber, the smaller the void ratio. The higher the capture rate, the better it is to remove dust.
