The four forces of the bag filter at work:

1, the role of inertial force: air flow through the filter material, can pass around the fiber, while the larger dust particles in the role of inertial force is still in the original direction of motion, helium and filter material collided and captured.
2. Screening: When the particle diameter of the dust is larger than the gap between the fibers of the filter material or the gap between the dust on the filter material, the dust is blocked when the airflow passes through. This is called the screening effect. When the accumulation of dust on the filter material increases, this effect is more significant.
3. Gravity sedimentation: When the dust-laden gas enters the bag filter, the dust with large particles and large specific gravity settles under the action of gravity, which is exactly the same as that of the sedimentation chamber.
4, the role of thermal movement: small and light dust (1 micron below) with the air movement, very close to the airflow streamline, can bypass the fiber. However, after they were subjected to collisions of gas and molecules, which were subjected to thermal motion (ie, Brownian motion), they changed their original directions of motion. This increases the chance of contact between the dust and the fibers, allowing the dust to be captured. When the diameter of the filter fiber is finer, the idle rate of the empty space is smaller and the capture rate is higher, so it is more favorable for dust removal.

High temperature dust bag dust collectors have long been widely used in various industrial sectors to capture non-bonded non-fibrous industrial dust and volatiles, capturing dust particles up to 0.1 microns. However, dew condensation should be avoided when using it to treat gas containing water vapor. The bag type dust collector has a high purification efficiency, that is, the efficiency of capturing fine dust can reach more than 99%, and its efficiency ratio is high. Bag Dust Collector Working Principle: Bag dust collector is a filter type dust removal device based on filtration principle. It uses organic fiber or inorganic fiber filter cloth to filter the dust out of the gas.

Dust-removing process of high-temperature dust-removing bag dust collector: Dust-laden gas enters the middle box from the air inlet, enters the bag from outside the bag, the dust particles block the surface outside the filter bag, and the purified air enters the bag. The upper part of the bag enters the upper box and is finally discharged by the exhaust pipe. The large-pulse long bag filter is a new type of high-efficiency long bag filter developed for domestic and foreign advanced technology. It is a new type and high efficiency bag filter developed on the basis of conventional short bag pulse dust collector. It not only integrates the features of chamber backflushing and pulse cleaning, but also overcomes the shortcomings of common chambers for backflushing and general pulse cleaning dust reattachment. It also lengthens the filter bag and gives full play to the effect of strong air cleaning with compressed air.

Dust removal skeleton

Bag filter and high temperature dust bag specific introduction