It has good chemical stability, smooth surface and very low friction coefficient inherent in polytetrafluoroethylene. It is resistant to high and low temperature, aging, durable consumer goods, and it also has microporosity, permeability and hydrophobicity. After using the filter bag of the membrane covered dust remover for a period of time, due to the effects of screening, collision, retention, diffusion and static electricity, the surface area of the filter bag gathers a layer of dust, which is called the primary layer. During the use process after that, the primary layer becomes the main filter layer of the filter material. Depending on the function of the primary layer, the filter material with larger mesh can also obtain higher filtering efficiency.
With the accumulation of dust on the surface of the filter material, the efficiency and resistance of the dedusting accessories increase correspondingly. When the pressure difference between the two sides of the filter material is large, some small dust particles that have been attached to the filter material will be squeezed past, so that the efficiency of the deduster will decrease The filter bag of the film covered dust remover has many characteristics, such as high pollution holding capacity, strong corrosion resistance, good temperature resistance, large flow rate, convenient operation, long service life and no fiber falling off. PTFE dedusting filter bag is a kind of fiber with stable chemical properties. Its characteristics are as follows:
1. The continuous working temperature is more than 250 ℃, and the instantaneous temperature is 280 ℃.
2. Completely free from acid, alkali and oxidation, and almost non combustible.
3. Fibers that will not age.
4. It can meet the severe working conditions and has a very long service life, usually more than 4 years.
The advantages of PTFE coated fabric bag
1. Close to zero emission, able to meet strict environmental protection standards
2. Good ash removal performance, which can provide high ventilation or reduce the pressure difference
3. The service life of the filter bag is prolonged, the cleaning times are reduced, and the equipment maintenance cost is reduced
4. With high air distribution ratio, small dust remover can be designed to reduce energy consumption when the pressure difference is reduced.