What causes the bag filter to be blocked

Bag filter as a filter equipment, it is mechanical in the final analysis, there will be some accidents in daily use, leading to the reduction of filtering effect, among which the blockage phenomenon is a more common situation. So, what causes the bag filter to be blocked?

The main reasons for bag filter blockage are as follows:

1. Poor cleaning of filter bag

It is understood that bag filter if the frequency of cleaning, or cleaning time is too long, resulting in too much pressure, it is easy to loose the fiber tissue of the filter bag to increase the fine dust in the flue gas blocking the filter bag. In addition, if the cleaning time is too long, the initial powder layer on the surface of the filter bag will be cleaned together, resulting in a decrease in the filtration accuracy of the filter bag. However, if the cleaning time is too short, the dust on the surface of the filter bag has not been completely cleaned, and then filtration begins. Dust gradually accumulates on the surface of the filter bag, which will also cause the blockage of the filter bag.

2. Contain water

Water is the main cause of filter bag clogging, which is usually caused by condensation at low temperature, especially when dealing with high temperature flue gas. In this case, the following methods can be used to prevent: avoid improper boot; Avoid starting when the dust collector resistance is high; Start below dew point. When the dust collector is running below the dew point, it is easy to cause problems. If the intake is not evenly distributed, it is easy to cause local corrosion of the dust collector shell. Therefore, it is necessary to avoid the dust collector working below the dew point. If a cold boot is unavoidable, use insulation devices such as steam insulation or electric heating insulation.

3, air infiltration

It is reported that air infiltration often occurs in the dust collector's flange, access door or dust collector's mobile device, if the seal is not strict, the external air into the dust collector, in the treatment of high temperature flue gas, will produce a low temperature area in the dust collector, resulting in low temperature dew, corrosion dust collector, resulting in the filter bag paste bag or hardening.

4, the filter wind speed is too high

It is understood that if the filtration wind speed of the dust collector exceeds the design standard of the filter bag, it will also lead to the fine dust in the flue gas entering the fiber of the filter bag, and the blockage resistance of the filter bag will increase.

The above is a simple description of what causes the bag filter to be blocked. If you have other things you want to know, you can consult Henan Aite Environmental Protection Equipment Co., LTD. The company is focused on R & D, production and manufacture of replacement imported filter element, filter, oil filter and other oil purification products, sewage treatment products, air dust removal products, pure water treatment products, filter press products.