In the field of dust removal of filter bag, the filter bag is usually the heart of a bag filter housing. Dust removal of bag filter can filter those dusty gas that it depends on the condition of the chemical fiber that is used to produce the filter bag.
In the general temperature conditions of flue gas, only need the filter bag can withstand the temperatures is less than 150 ℃, then, these filter material of polyester, polypropylene, acrylic, nylon and other chemical fibers can be basically used. In the case of high flue gas temperature, such as: chemical, carbon black , exhaust gas, blast furnace gas of Iron &steel plant, the kiln of cement plant exhaust gas, calcium carbide plant kiln exhaust gas, foundry, asphalt Concrete mixing asphalt flue gas, refractory brick kiln flue gas, Coking gas and so on. On the other hand, these dust flue gas have a flaw in specific resistance, it is not suitable for electric precipitator collection, can only be used by filter bags or other means to collect; at the same time for the dust flue gas, the cost of investment will be higher if its temperature is dropped below 150 ℃, And the installation space may also be limited; on the other hand in the dust flue gas because of the composition of sulfur, dust flue gas with acid "dew point", dust flue gas can only be filtered when the temperature of dust flue gas is higher than the acid dew point .Thus, need a chemical fiber in high temperature resistance to be used in this fields.