Dust-removing bag plays an irreplaceable role in modern dust-removing equipment. Some manufacturers are greedy for cost and choose filter materials that are not suitable for their working conditions, which has caused immeasurable losses to the whole production. Therefore, choosing a good dust-removing bag is the most important thing to ensure the safe operation of the whole equipment. In this chapter, according to our company's construction experience and lessons for many years, let us learn how to choose a suitable dust bag for various working conditions and equipment.

The bag filter is usually selected according to the nature of dust-containing gas, dust and the way of dust removal. The following principles should be followed when selecting the bag filter.

1. The performance of dust bag should meet the general conditions and special requirements of production conditions and dust removal process, such as temperature, acidity and basicity of the main body and dust, and explosion risk.

2. On the premise of the above, the filter material with long service life should be selected as far as possible, because long service life can not only save operating costs, but also meet the long-term emission requirements.

3. When choosing the filter material of dust removal cloth bag, the sorting of various filter materials should be compared, and the so-called "good" filter material should not be used to adapt to various working conditions.

4. In terms of gas properties, dust properties and dust cleaning methods, the main influencing factors should be grasped to select dust removal filter materials, such as high temperature gas, flammable dust and so on.