In the process of daily dust filter bag use, the service life of the dust filter bag has been of concern to everyone, so the service life of the dust filter bag is related to what factors?
1. Blockage of dust removal filter bag. When the dust bag is blocked, the resistance increases, which can be shown by the increase of the reading value of the differential pressure gauge. The blockage of dust filter bag is the main cause of wear, perforation and falling off of dust bag. Due to the choice of different coal, resulting in the amount of dust in the flue gas is not the same, when the dust into the dust collector, the diameter of the dust with gravity to fall or fall off under the interception of the filter bag, and the particle size of the dust under the action of wind speed to generate kinetic energy.
2. Damage of cloth bag filter bag. The shape of the bag and the installation method and mechanism of the bag filter bag determine the location of the bag filter bag easy to damage, so that inspection and maintenance can be carried out.
3, the aging of dust bag. Cause investigation shall be carried out, elimination measures shall be taken and the bag filter bag shall be replaced.
4, the press cloth should not be hung too loose or too tight, too loose easy to dust, too tight easy to pull bad.
5, old and new cloth bag filter bag should not be mixed, to avoid damage to the time of different effects on the normal work of equipment. The replaced cloth bag filter bag should be blown clean with compressed air first, and then checked for holes. If any holes are repaired, leave for replacement. Such as dust paste live in the filter bag, rinse with water, cool dry after leaving for replacement.
When the dust is intercepted by the filter bag and gathers on the cloth bag, it will have an impact force on the filter bag. If the dust content in the flue gas is large, the filter wind speed is large, the filter bag will bear thousands of times of friction and erosion, and the filter bag surface fiber can not withstand erosion and fall off, damage the filter bag filtration efficiency. Therefore, for the working condition of large dust content, need to consider the wear resistance of needle felt, its purpose is to extend the service life of filter media.
Dust Filter bag are widely used in steel, cement, chemical, power plant, road construction, metallurgy, grain processing and so on.