Various media have certain characteristics, but also has its shortcomings, natural and synthetic fibers and their resistance to flexing abrasion resistance is better, but they are poor heat resistance, the use of these media must strictly control their use temperature, over-temperature use of the bag quickly shrink, even burn, affecting life. Using filter bags give us some lessons and experience Various media have certain characteristics, but also has its shortcomings, natural fibers (such as cotton, hemp, silk, wool fibers) and synthetic fibers (such as nylon, polypropylene, polyester, Nomex ……) and its resistance Flexing and wear better, but they are poor heat resistance, the use of these media must strictly control its temperature, over-temperature use of the bag quickly shrink, even burn and decrease the using time of life. Fiberglass either continuous glass fiber cloth, texturized yarn fabric, or needle felt filter, from the microscopic point of view, are cylindrical smooth surface rod materials, so it can flex resistance and poor wear resistance. Its molecular structure is mainly composed of tetrahedral silicon-oxygen bond, bond energy, so the temperature is good. Fiberglass filter surface must be chemically treated to improve its flex resistance, abrasion resistance and other properties, in the course must avoid weaknesses, such as fiberglass in the packaging, transportation, installation process must prevent drag on the rough ground , foot or with sharp or hard object collision, friction, contact with flower board, skeleton, support ring must be smooth welds must weld and polish, without desoldering hair defects, fraying before running or running bag, produce bag early damage should not have happened. Also in the course of a bag filter, bag filter, there had been a fire or explosion. Exhaust contains carbon black industry because a large amount of CO, H2, CH4 and other combustible gases, such as operational errors, large amounts of oxygen into the bag filter it prone to fire or explosion; when the temperature rises bag filter particulate combustion also hidden During a fire or explosion. In the course of the process conditions should be considered a bag filter and control the operating system, so as to ensure safety in production.