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    High silicon (modified) filter bag with membrane

    High silicon (modified) filter bag with membrane

    Our high silica (modified) membrane coated filter bag is made of excellent high silica fiber as raw material. After drawing spinning warping weft expansion weaving, it produces excellent filter cloth with sufficient mechanical strength. After pretreatment process and heat setting processing, it has excellent physical and chemical indexes and stable size, and is made into a filter bag that meets the requirements of working conditions. In order to improve the use effect of the filter bag and meet the requirements of specific working conditions, the surface of the filter bag is impregnated with PTFE and coated with PTFE film. The characteristics of acid and high silica resistance are organically combined with the characteristics of temperature and corrosion resistance, good flexibility and easy ash removal of PTFE. The service life and other properties of the filter bag are greatly improved. It is a very cost-effective filter material.
    (1) High filtering precision
    The micropores on the surface of high silica (modified) membrane coated filter bag are small and uniform (0.10-2.0 μ m) , it can separate all dust larger than the diameter of micropores, and PM10 (inhalable dust) and PM2, which are seriously harmful to human health 5 (respirable dust) has very high capture efficiency. Therefore, the dust purification efficiency is high and stable, and it is easy to achieve less than 20mg / m 3 Emission standards.
    (2) Light and soft, easy to remove ash
    The thickness of filter material is about 0.8mm, which is only 1 / 3 of felt filter material. It is woven with expanded yarn and has soft texture. During ash cleaning, the filter material shakes in a serpentine shape, and the dust is easy to peel off; The ash cleaning pressure is small and the ash cleaning times are few, which can effectively reduce the consumption of compressed air, reduce the amount of maintenance and save the operation cost.
    (3) High strength, low elongation and stable size
    The longitude and latitude strength of high silica (modified) membrane coated filter bag is 2300n / 5 × Above 20cm, it will not shrink under high temperature, almost maintain the original size, and will not affect the filtering and ash removal effect. The elongation of acid resistant high silica oxygen filter bag is less than 3%. During the filtration operation, the self weight of filter material plus the weight of dust layer will not cause the elongation of filter bag. At the same time, it also greatly reduces the periodic damage of filter bag caused by pneumatic ash cleaning.
    (4) Outstanding temperature resistance
    The high silica (modified) membrane coated filter bag can operate continuously from above the acid dew point to 260 ℃, and the instantaneous temperature resistance can reach 280 ℃. For the instantaneous hot particles and sparks, the filter material will not burn and burn. The acid resistant high silica coated filter material is baked in the oven at 280 ℃ for 2 hours, and the physical and chemical indexes and color are basically unchanged, which is not possessed by other filter materials.
    (5) Oxidation and corrosion resistance
    The high silica (modified) membrane filter bag will not be oxidized by oxygen or nitride, so it is not necessary to consider the problem of high and low oxygen content in the dust collector. The high silica (modified) membrane coated filter bag has outstanding corrosion resistance, and after the whole filter material is impregnated with PTFE, PTFE will form a dense protective film on the surface of the high silica (modified) membrane coated filter bag, so the high silica (modified) membrane coated filter bag will suffer little erosion during operation.
    (6) Excellent folding resistance
    The base material of high silica (modified) membrane coated filter bag is made of ultra-fine high silica fiber. After scientific chemical post-treatment, the folding resistance of filter material is several times higher than that of ordinary filter material, which can withstand long-term shrinkage and expansion without damage to filter material and ensure the service life of filter material.
    (7) Water and oil repellent, suitable for working conditions with high moisture content
    The hydrolysis resistance of high silica (modified) membrane coated filter bag is very good. The base material is treated with water and oil repellent process. After application test, the waterproof grade is not less than 4.5, which eliminates the adsorption of water by the filter material and effectively reduces the hardening phenomenon after condensation.
    (8) Adapt to reverse blowing conditions
    The use of high silica (modified) membrane filter bag is not affected by the change of working conditions, and there are no strict requirements for the chemical composition, dust particle size, moisture content and so on of soot and collection products.

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