The filter cloth is the most critical part of the bag filter. The characteristics of the filter cloth are not only related to the nature of the fiber (such as temperature resistance, corrosion resistance and mechanical strength, etc.), but also related to the surface structure (weave pattern, hairiness) Degree related. Temperature resistance, resistance to installation, etc. are basic requirements for filter cloths.
Bag filter dust removal process basic requirements for filter cloth
(1) To meet the requirements of dust removal efficiency. In general, the structure of the filter cloth should be selected according to the strength of the filter bag. For dust-removal intensity, such as using compressed air pulse backflushing, the ash-attached ash layer on the filter bag is sprayed off, and the dust-removal effect string is completely supported by the compactness of the filter cloth. Generally, it is required that the filter cloth is relatively free and welcome. Dust surface with fluff. The presence of fluff on the surface of the filter bag can increase the surface area of the trapped particles and provide support between the holes to prevent the accumulated ash from penetrating into the pores, thereby forming a loose layer; when the filter bag is cleaned, it acts as a bond. The structure helps to maintain the ash layer and increase the initial string.
(2) To meet the requirement of cleaning, the resistance of the filter cloth to maintain economic operation is 800-1500pa. In addition to the rational selection of the cleaning method, the filter cloth is also required to be easily cleaned.
(3) Satisfy the breathability requirements, the air permeability of the fabric filter cloth is an important filter performance, and the water absorption of the filter cloth has a decisive effect on the air permeability. Natural fibers and organic synthetic fibers absorb moisture from dust-laden gas at room temperature, so they adhere to the fine dust contained in the dust-containing gas, accumulate on the filter bag, or further chemical changes gradually lose breathability, thus lowering Even lost the filter, so that must be removed to clean or replace the filter bag.
(Addtime：2018-3-20)
