The cause of adhesive paste bag in bag filter
Bag-type dust collector adhesive paste bag mainly refers to the dust adhesion is relatively large, although there is no condensation phenomenon, but the dust still adhere to the surface of the fiber, bag-type dust collector online ash removal system can not remove it down. Yutai environmental protection believes that the bag filter adhesive paste bag may come from the following reasons:
1, some dust may not be strong adhesion, but it can absorb the moisture in the smoke and recrystallization chemical process, the formation of new hydraulic substances or crystals, forming a "crust" covered in the filter surface. For example: cement clinker, desulfurization products - calcium sulfate.
2. Even though the dust itself is not sticky, if the dust particles are fine and the dust has a relatively large water content, the dust is easy to evenly adsorb on the surface of the filter material, forming a layer of "floating ash". The adhesion is not very strong, but it is difficult to remove. The longer it runs, the thicker the ash. This can happen in coal-fired power plants, especially for filter bags more than 6 meters long.
3. The viscosity of the dust itself is relatively large. When it comes into contact with the filter fiber, the intermolecular force is relatively strong. Such as oily particles, denitrification of ammonium sulfate, desulfurization of the use of saltpeter ash.
4. Although some dust is not sticky, it is easy to deliquescence. When it is trapped on the surface of the fiber, it will absorb water from the air and form a solution on the surface of the fiber. Like powdered sugar.