Pulse Jet Bag Filter for Dust Control

Bag filter is a dry filter device. It is used to capture small, dry, non-fibrous dust. The filter bag is made of textile cloth or non-woven felt, which filters the dust-laden gas by the filtration function of the fiber fabric. When the dust-laden gas enters the bag filter, the particles with large particle and large specific gravity, due to the effect of gravity Settled down, falling into the hopper, dust containing gas with smaller dust in the filter, the dust was blocked, so that the gas purification. Filter material used for a period of time, due to sieving, collision, retention, diffusion, static electricity and other effects, the surface of the bag accumulates a layer of dust, dust in the layer called the first layer, after the movement in the process, the initial layer filter has become the main filter layer, relying on the role of the first layer, mesh larger filter can get higher filtration efficiency. As dust accumulates in the filter media, the efficiency and drag of the dust collector increase correspondingly. When the pressure difference on both sides of the filter media is large, some fine dust particles attached to the filter material will be squeezed in the past, so that the efficiency of the precipitator decreased. In addition, the high resistance of the dust remover will significantly reduce the air volume of the dust removal system. Therefore, the dust collector's resistance reaches a certain value, it is necessary to timely cleaning. Cleaning cannot damage the first layer, so as to avoid the efficiency decline.
Bag filter is a dry purification equipment. Its structure is relatively simple, stable operation, less initial investment, compared with the ESP to facilitate the maintenance. For adsorption and purification of dust have a good effect, especially in the treatment of dust grinding. In the industry, bag filter is widely used, mainly for steel and cement, chemical, smelting, carbon, casting, building materials woodworking, ceramics, and other industries.
Bag filter work principle: Dust from the inlet into the dust collector housing and exhaust pipe between the formation of downward rotation of the outer swirl. Dust suspended in the external swirling of the dust in the centrifugal force to the wall, and with the external swirling to the lower part of the precipitator, the exhaust hole discharge. The purified gas forms an ascending internal swirling flow and is discharged through the exhaust pipe.
Bag filter is generally used pulse jet cleaning technology, high dust removal efficiency, low emission concentration, small leakage rate, less energy consumption, less steel consumption, small footprint, stable and reliable operation, good economic returns. For metallurgy, building materials, machinery, chemicals, electric power, light industry dust flue gas. Box with airtight design, good sealing, inspection door with excellent sealing material, the production process to kerosene leak, low air leakage rate. Inlet and outlet air duct layout is compact, airflow resistance is small. At the same time, the usage of sub-par wind stop pulse cleaning, cleaning cycle length, low consumption, can double the life of the filter bag and valve. Can be achieved without shutting bags, maintenance does not affect the normal operation of equipment.