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Selection elements of bag filter

Source: Official website   |   Date:2019-08-31

Bag dust collectorIt is a dry dust filtering device. When the dusty gas enters the bag filter and enters the clean air chamber from the dust removal room, the dust particles in the flue gas are intercepted by the dust removal bag on the outer surface of the bag, thereby achieving dust removal. Therefore, dust removal bags can achieve fine dust purification that other dust removal equipment cannot achieve, with a dust removal efficiency of 99.96%, gradually replacing electrostatic precipitators and being widely used in the field of industrial dust control. However, the treatment required for bag filters varies in different industries and smoke environments, such as high temperature resistance, corrosion resistance, and wear resistance. The number of bag filters and fan power also need to be customized according to the actual situation of the enterprise. So the enterprise is conductingSelection of Bag Dust CollectorWhat are the elements that need to be noted in time? The details are as follows:


1. Processing air volume: The amount of gas processed is the decisive factor in determining the size and type of dust collector. When designing a bag filter for processing air volume, enterprises should ensure a certain margin or reserve some space that may increase equipment.

2. Dust concentration in flue gas. The dust concentration in the flue gas determines the cleaning frequency of the bag filter, the power of the induced draft fan, etc. In addition, when the dust concentration is high, it is necessary to perform anti wear treatment on the dust removal equipment and bag.

3. Adhesion of dust: The adhesion mechanism between dust and walls is closely related to the specific surface area and moisture content of dust. The smaller the dust particle size d, the larger the specific surface area, the more water content, and the greater its adhesion. For bag filters, handling dust with high adhesion often leads to clogging of the bag, resulting in increased operating costs. Therefore, corresponding treatment is needed.

4. Does the dust contain corrosive gases: When the flue gas contains corrosive gases, it is necessary to perform anti-corrosion treatment on the equipment and dust removal bags, while ensuring that the flue gas temperature is above the dew point.

5. Dust containing flue gas temperature: If the temperature of the dust containing flue gas is high, it is necessary to perform high-temperature treatment on the dust removal bag, while ensuring that the flue gas temperature is within the applicable temperature range that cannot be removed from the dust and above the dew point. If the temperature is too high, it is easy to burn the bag, and if it is too low, it will condense and cause blockage of the bag.

Does the smoke contain large particle dust such as iron filings? If the dust contains large particle dust such as iron filings, it is easy to cause equipment and bag wear during the operation of the bag filter, leading to increased operating costs. Therefore, it is necessary to add pre dust removal equipment before the bag filter to remove large particle dust.

7. Humidity of flue gas: When the moisture content in the flue gas is high, it is easy for the dust to stick and cause bag blockage, increasing operating costs. Therefore, it is necessary to control the moisture content in the flue gas.

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