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Working principle of high-temperature resistant filter bags

Time : 2023-06-25 Hits : 4

High temperature resistant cloth bag dust removal is made by mixing two or more types of high temperature resistant fibers, using physical and chemical properties to achieve high temperature resistance. Generally, high temperature resistant dust removal does not have different characteristics such as high strength, acid alkali resistance, wear resistance, etc. After surface chemical treatment, it also has the characteristics of dust removal, water repellent, oil resistant, and anti-static. This effect is widely used in today's dust removal technology.

The principle of high-temperature resistant cloth bag dust removal: Dust particles are intercepted due to the impact of inertial force with the fibers when passing through the filter cloth fibers. In pulse and air box pulse dust collectors, dust is attached to the outer surface of the filter bag. When dusty gas passes through the dust collector, the dust is trapped on the outer surface of the filter bag, while clean gas enters the interior of the filter bag through the filter material. The cage frame inside the filter bag is used to support the filter bag, prevent it from collapsing, and at the same time, it helps to remove and redistribute dust cakes.

Factors to consider when selecting high-temperature resistant cloth bag dust removal:

1. First, the quality of the filter bag. Choosing good raw materials and reputable manufacturers, ensuring that the finished product does not have quality issues such as open lines or cracks, is considered compliant, and the size of the filter bag should not be too small. Because if a large amount of dust is adsorbed, high-temperature resistant cloth bag dust removal is prone to bag dropping.

2. The selection of filter bags should also pay attention to the temperature of the dust. If it is room temperature dust, filter materials with temperature resistance below 130 ℃ can be selected, and temperature resistant filter materials with temperature resistance between 130-180 ℃ can be used for room temperature dust. If using high-temperature resistant cloth bags for dust removal is high-temperature dust, a high-temperature resistant filter material of 180-280 ℃ should be selected. The temperature resistance of the filter material is limited, and high-temperature dust must be selected as the high-temperature filter material, otherwise it may cause the bag to paste or burn out the cloth bag.

3. If the treated dust contains acid, alkali, or is highly corrosive, the filter bag should be treated with acid and alkali resistance and anti-corrosion treatment. If the dust humidity is high and the viscosity is high, a cloth bag made of waterproof membrane filter material should be selected to achieve high dust removal efficiency.

4. Do not filter the wind speed too fast. If the filtering wind speed is too fast, it will cause accelerated damage to the dust removal bag during high-temperature bag dust removal. Although fast filtering speed can save costs, prolonged time can reduce the service life of the dust removal bag.

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