Under the condition of normal flue gas temperature, the temperature resistance of Metas dust-removing cloth bags must be below 150 ℃, and in the places with high flue gas temperature, such as smelters, carbon black plants, refining Dust removal and purification in high temperature environments such as iron plant blast furnace gas, calcium carbide plant kiln exhaust gas, casting, steelmaking plant flue gas, cement factory vertical kiln exhaust gas, asphalt concrete mixing asphalt flue gas, and coal-fired boilers are not competent.
First, the high temperature resistant Metas dust bag is because these dusty flue dust is not suitable for electric dust collector due to the specific resistance limit, and can only be collected in a bag or other methods;
Second, the high temperature resistant Metas dust bag is required to reduce the temperature of the dust-containing flue gas below 150 ℃ or the investment is high or subject to site restrictions;
Third, the high temperature resistant Metas dust bag is because the dust-containing flue gas contains sulfur components, the dust-containing flue gas has an acid "dew point", and can only be filtered and separated under the condition where the acid dew point is higher than the temperature Therefore, it is necessary to have a chemical fiber that can withstand higher temperatures for making filter media. METAMAX fiber is an aromatic polyamide fiber. In addition to the spinnability and abrasion resistance of polyester fiber, its biggest feature is that it has good heat resistance, flame resistance and infusibility. Fiber oxygen index can be 29%, which is unnatural. When the temperature is above 400 ° C, the fibers are slowly carbonized. In addition, Metas fibers also have good dimensional stability. Compared with glass fiber, its abrasion resistance and folding resistance are unmatched by glass fiber. Therefore, it has high temperature resistance and long service life. It is the first choice filter material for bag dust collectors in high temperature filtration occasions.