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Dust bag material composition and selection criteria

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Dust bag material is synthetic fibers, natural fibers or glass fibers woven into the fabric or felt. Cloth or felt necessary then sewn into a cylinder or flat-shaped bag. According to the flue gas properties, choose the conditions suitable for the application of the filter. Typically, the flue gas temperature below 120 ℃, requires acid resistance filter having a case and durability, often used in polyester and polyester needle felt cloth; When handling hot flue gas (<250 ℃), the main choice of graphite glass cloth; In some special cases, the choice of carbon fiber filter and the like. Bag filter operation speed control of flue gas through the filter (referred to as the filtration rate) is quite important. Generally the filtration rate of 0.5-2m / min, for particles larger than 0.1μm efficiency of up to 99%, the loss resistance of the device is about 980-I470Pa use cloth dust bag and non-woven textiles made of felt, the use of fabric filter dust effect on gas filtration. Baghouse dust bag is to determine the collection efficiency and operating temperature of key components, the replacement bag costs and maintenance costs are the main bag filter, so the dust bag working life and costs related to the running state of the dust, Select the appropriate filter and rational design of the structure is particularly important. In general, the selection of pulse jet bag filter needle felt, sub-room cleaning bag filter bag filter or mechanical rapping selection woven. Dust bag filter selection should be based on the gas temperature, humidity, and chemical properties; the size of the granule composition, weight, shape, whether of pecking and grinding dust concentration, filtration rate, cleaning method, baghouse emission concentration and operating system and other factors considered.

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