The high-temperature filter material is mainly used for flue gas filtration, and the application of high-temperature filter material can recover a large amount of heat energy from it, because the flue gas does not need to be cooled before filtering. Representatives in this regard are metal fiber needle-punched felt filter materials, which can be used at a high temperature of 300-600°C, and the general use temperature is 450°C; high silica filter materials, high silica fibers are a special kind of fiber in glass fibers. The filter material can be used for a long time at a high temperature of 600℃, and the short-term high temperature can reach 800℃; ceramic fiber filter material, this filter material can be used at a high temperature of 760℃ for a long time, and the high temperature can reach 1100℃.
