The filtration mechanism of the membrane surface of the normal temperature film-coated dust bag is the same as the filtration of the dust layer. It mainly relies on the sieving effect of micropores. Due to the small pore size of the membrane, it can block most of the dust particles on the surface of the membrane to complete the gas-solid separation. the process of. This process is different from the separation process of general filter materials. The dust does not penetrate into the fibers supporting the filter materials. Higher dust removal efficiency can ensure lower running resistance. And as mentioned earlier, cleaning is also easy.
The material of the high temperature resistant dust bag is aromatic polyamide fiber. In addition to the spinnability and wear resistance of polyester fiber, it is characterized by good heat resistance, flame retardancy and infusibility, and the fiber oxygen index can be adjusted. At 29%, no spontaneous combustion. The chemical resistance of high temperature dust bag, low concentration of acid and alkali and most hydrocarbons will not affect it, even a small amount of fluoride will not corrode significantly. The size of the high temperature dust filter bag is stable, and the thermal shrinkage rate is less than 1% at a temperature of 250 ° C, and it has high temperature stability. The fire resistance of the high-temperature dust filter bag can start to decompose and carbonize at 400 ° C, and the limiting oxygen index is 30, which does not spontaneously ignite nor support combustion. The temperature resistance of the high-temperature dust filter bag can be continuously operated at a temperature of 204 °C (instantaneous temperature of 250 °C), and can withstand repeated 250 °C instantaneous temperature fluctuations.