Key Factors Affecting Baghouse Dust Removal Efficiency

Since the beginning of the 20th centuryBaghouse Dust CollectorOur dust removal equipment products have become a mature offering in the dust removal market. In reality, there is a wide range of technological discrepancies among bag dust collector manufacturers, and some manufacturers' technology is not very mature. Consequently, the dust removal efficiency of the bag dust collectors they produce does not always achieve the expected filtration results. However, for dust removal systems, even the best products can be affected by certain factors under specific conditions. Below, Shiheng Environmental Protection introduces the main factors that influence the dust removal efficiency of bag dust collectors:

1. Dust Characteristic Factors: The efficiency of bag dust collectors is directly related to the size, weight, shape, electrostatic effect, and concentration of dust particles. Generally speaking, the larger the particles, the higher the dust removal efficiency, the greater the gravity, the more irregular the shape, and the more pronounced the electrostatic effect. Dust collector bag performance. The performance of the filter fabric greatly affects the dust removal efficiency and wear resistance of the fabric. The filter material should meet the following conditions: it can prevent the passage of dust, and the holes of the woven fabric should be small; the warp and weft threads themselves should be able to increase the effective area of the sieve filter, reducing resistance.

2. Dust Bag Performance Factors: The filter cloth can significantly affect both dust removal efficiency and resistance. It must block the passage of fine dust particles; the weave holes of the fabric should be small, and the threads themselves should be thin to increase the effective screening area and reduce resistance; the nap of the fabric should be long and dense to cover the holes and maintain a certain strength.

3. Air-to-fabric ratio factor: An important characteristic of the bag dust collector is the effective utilization area of the filter bag material, which is determined by the air-to-fabric ratio of the filter bag material. The lower the air-to-fabric ratio, the longer the service life of the filter bags. However, lowering the air-to-fabric ratio can lead to a decrease in the efficiency of the dust collector, an increase in the volume and investment of the dust collector. When using smoke purification reverse blowing, the air-to-fabric ratio is0.4～l.0m3When using compressed air pulse backblowing, the air-to-fabric ratio is1.1～2.5m3。

4. Filtration Airflow Factor: Filtration airflow refers to the speed at which air flows through the filter fabric, measured by the actual airflow volume per filter fabric, hence also known as filtration intensity or unit load.qIncreasing the filter wind speed can enhance the bag filter's processing capacity and reduce the filter area; however, excessive wind speed can blow up the dust that has settled on the filter material, increasing resistance and affecting the dust removal efficiency. Experiments show that for velvet and tweed fabrics, an increase in filter wind speed has little impact on dust removal efficiency; but for glass fiber crepe, its dust removal efficiency significantly decreases with the increase in filter wind speed. To ensure good dust removal efficiency and relatively low resistance for bag dust collectors, the filter wind speed should be determined separately according to different filter materials and cleaning methods.