How do you calculate bag filter efficiency?
The measurement of the dust removal efficiency of the bag filter is not unilateral. It should be considered from many aspects. The following items are explained.
(1) Influence of filter bag of dust collector on dust removal efficiency under different working conditions
The classification efficiency of the same dust removal bag is different under different working conditions. The dust removal efficiency of the clean dust removal bag is the lowest, and the dust removal efficiency of the dust removal bag is the highest after the dust is accumulated. The dust collection efficiency of the dust removal bag is reduced after the dust removal. It can be seen that the dust layer on the surface of the bag filter is the main dust collector, which is usually called the secondary filter layer, while the bag filter only supports the dust layer. Therefore, the intensity of dust removal should be appropriate, and a certain thickness of dust layer should be retained to avoid the reduction of dust removal efficiency.
(2) Influence of dust particle size on dust removal efficiency of bag filter
Bag-type dust collector: 0.2-0.4 μ The particle size of m, the dust collection efficiency of the ordinary filter bag is the lowest under the three working conditions, because the dust particles in this range are in the working principle of the bag filter
The lower limit of “interception” and “diffusion” is 0.2-0.4 μ The dust within the range of m is the most difficult to capture.
(3) Influence of filter bag structure and dust load on dust removal efficiency of rate bag filter
The size of the dust load deposited on the surface of the dust collecting bag is also directly related to the dust removal efficiency of the bag filter.
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