Product Description

Bag filter is the 1 kind of dry dust filtering device. It is suitable for trapping fine, dry, non-fibrous dust. The filter bag is made of textile filter cloth or non-textile felt. The dust-containing gas is filtered by the filtering effect of fiber fabric. When the dust-containing gas enters the bag filter, the dust with large particles and specific gravity settles down due to gravity and falls into the ash hopper. When the gas containing smaller dust passes through the filter material, the dust is blocked and the gas is purified. Bag filter is the 1 kind of dry dust filtering device. After the filter material is used for a period of time, due to the effects of screening, collision, retention, diffusion, static electricity, etc., a layer of dust has accumulated on the surface of the filter bag. This layer of dust is called the first layer. In the later movement, the first layer becomes the main filter layer of the filter material. Relying on the role of the first layer, the filter material with larger mesh can also obtain higher filtration efficiency. With the accumulation of dust on the surface of the filter material, the efficiency and resistance of the dust collector are correspondingly increased. When the pressure difference between the two sides of the filter material is large, some fine dust particles that have been attached to the filter material will be squeezed in the past, so that the efficiency of the dust collector will decrease. In addition, the high resistance of the dust collector will significantly reduce the air volume of the dust removal system. Therefore, after the resistance of the dust collector reaches the value, it is necessary to clear the dust in time. The initial layer cannot be destroyed during ash removal to avoid efficiency reduction. Bag type dust collector has the following advantages:
(1) The dust removal efficiency is high, generally above 99%, and the dust concentration of the dust collector outlet gas is within a few 10mg/m3, which has a higher classification efficiency for submicron fine dust.
(2) The range of air treatment is wide, the small one is only 1min m3, and the large one can reach 1min tens of thousands of m3, which can be used for dust removal of flue gas from industrial furnaces and reduce the emission of air pollutants.
(3) Simple structure, convenient maintenance and operation.
(4) Under the premise of ensuring the same high dust removal efficiency, the cost is lower than that of the electrostatic precipitator.
(5) the use of glass fiber, poly 4 gas ethylene, P84 and other high temperature resistant filter material, can be operated under high temperature conditions above 200 ℃
(6) It is not sensitive to the characteristics of dust and is not affected by dust and resistance.

Bag dust collector characteristics

The dust removal power is very high: it can usually reach 99% and can capture fine dust particles with a particle size greater than 0.3 microns.
Dust disposal is simple: bag filter is the 1 kind of dry purification equipment, so there is no sewage disposal or mud disposal.
The equipment is sensitive to use: it can be used as a small unit directly located indoors and adjacent, or it can be made into a large dust removal room.
The layout is relatively simple: the operation is relatively stable, the initial capital contribution is less convenient to maintain.
Stable performance of the equipment: the ash hopper of the dust collector can withstand long-term temperature, humidity changes and vibration, and has anti-corrosion performance.

The working principle of bag filter

Filtration Principle

Dust-containing gas enters the equipment from the air inlet of the equipment. Large particles of dust are affected by gravity and inertial force when passing through the ash hopper. The dust is separated by the equipment and falls into the ash hopper. The dust-containing gas enters the filter area of the box body through the ash hopper, the gas passes through the filter bag, the dust is retained on the surface of the filter bag, the gas is purified into the dust collector box, and the clean gas is discharged from the exhaust port.

Principle of cleaning ash

The bag filter is equipped with a differential pressure detection device. With the gradual extension of the filtration time, the dust on the filter bag will be more and more, and the resistance of the dust removal equipment will rise. The resistance rises to the set value, and the dust collector device carries out circulating dust removal.