The water-repellent and oil-proof needle punch felt filter bag is formed by padding, pre-bake, and baking treatment with a hydrophobic agent and an oleophobic agent. The hydrophobic agent and oleophobic agent are rapidly dried and then attached to the surface of the filter fiber in a net shape, thereby reducing the surface tension of water and oil and the filter bag, so that the wet filter medium formed by water, oil and dust is not Will adhere to the surface of the dust filter bag, thus avoiding the paste bag phenomenon. The
The water-repellent and oil-proof needle felt is usually used when the temperature of the dust collector box is lower than the dew point temperature and the humidity of the dust-containing gas is relatively high. The
Under normal circumstances, if the acidity of the dust-containing gas is small, the dew point temperature is 40-60°C. If the acidity is large, the dew point temperature may be as high as 120°C. The
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The filter bag of the filter cloth treated with waterproof and oil-repellent treatment is used in the occasion with larger moisture content. Compared with the ordinary filter bag, because the filter material is not easy to block the paste bag, the service life of the bag is prolonged and the cleaning cycle can be prolonged. The flow rate is also increased, so it can save a lot of energy and maintenance costs.