Dust catchers have become common machines around people. The material of the filter bag of the precipitator is a cloth or felt made of synthetic fibers, natural fibers or glass fibers. If necessary, sewn cloth or felt into a cylinder or a flat filter bag. Depending on the nature of the flue gas, filter media suitable for the application conditions are selected. Generally, when the flue gas temperature is lower than 120°C, and the filter material is required to have acid resistance and durability, polyester fleece and polyester needle felt are often used; when high-temperature flue gas (<250°C) is processed, graphitization is mainly used. Glass cloth; in some special circumstances, the use of carbon fiber filters. It is important to control the speed at which the flue gas passes through the filter material (called the filtration rate) during operation of the bag filter. Generally, the filtration rate is 0.5-2 m/min, and the particle efficiency greater than 0.1 μm can reach 99% or more, and the device resistance loss is about 980-I470Pa.
