Impact of bag filter on filtering wind speed

2. Influence of wind speed on equipment: When the filtering wind speed is high, the filtration area and volume can be reduced, the floor space can be reduced, and the investment can be reduced. However, the high selection of filtration wind speed will affect the dust removal efficiency, increase the difficulty of cleaning, increase the filtration resistance, reduce the service life of the dust filter bag, and bring about an increase in operating and maintenance costs. In fact, choosing wind speed is a more complicated task. It is not enough to treat the above advantages and disadvantages in isolation. It is most important to solve this problem. Wind speed on the problem of dust removal accessories: In recent years, in the case of increasingly strict environmental protection requirements, in the design of bag dust removal equipment , it is very important to properly select the filter wind speed of the dust collector.

3. Increasing the influence of wind speed: Under the premise of changing the air volume, increasing the filtration speed can save the filter material and improve the processing capacity of the filter material. However, after the filtration speed is increased, the resistance of the equipment is increased, the energy consumption is increased, and the running cost is increased. If the filtration speed is too high, the dust accumulated on the filter bag is laminated to increase the filtration resistance. Due to the large pressure difference between the two sides of the filter bag, the fine dust penetrates into the filter material and even penetrates the filter material, so that the dust concentration at the outlet increases. High filtration wind speed will also lead to the rapid formation of dust layer on the filter material, causing excessively frequent cleaning, increasing the energy consumption of cleaning and shortening the service life of the filter bag.

4. What is the impact of low wind speed: at low filtration speed, the pressure loss is small and the efficiency is high, but the required filter bag area is also increased, and the volume, floor space and investment cost of the dust collector are also increased. In general, dust that is finer or difficult to trap, has a high temperature of the dust-containing gas, a high dust concentration, and a low filtration rate when the moisture content of the flue gas is large.