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What are the factors that affect the dust removal efficiency of dust remover in coal-fired power plant? -Novo environmental protection equipment

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What are the factors that affect the dust removal efficiency of dust remover in coal-fired power plant?

Source: Environmental protection equipment and Novo Release time: 2016-3-1 8:41:24
 What are the factors that affect the dust removal efficiency of dust remover in coal-fired power plant?
The use of dust collector in coal-fired power plant is not only approved by the Environmental Protection Bureau, but also ensures the health of operators. Under normal working conditions, the dust removal efficiency of coal-fired power plant dust collector is closely related to the dust layer on the filter material, the characteristics of filter material, the characteristics of dust and the selection of filtering wind speed.
Dust catcher of coal fired power plant It is not only approved by the Environmental Protection Bureau, but also ensures the health of operators, Dust catcher of coal fired power plant The dust removal efficiency is closely related to the dust layer on the filter material, the characteristics of the filter material, the characteristics of the dust and the selection of the filtering wind speed.
1、 Dust catcher of coal fired power plant Influence of dust layer on filter media of equipment
There is no dust layer on the filter material at the beginning of purifying the dust containing gas, so the ability of collecting dust is relatively low, Dust bag The filtration efficiency of the filter material can reach 99.9%, and it has a good trapping effect on the fine dust less than 1 um.
2、 Dust catcher of coal fired power plant Influence of equipment dust characteristics
In the dust characteristics of coal-fired power plants, the impact of Bag filter The filtration efficiency mainly depends on the size of dust particles. For 0.2um dust particles, the classification filtration efficiency can reach 95%; for dust particles larger than 0.9um, the filtration efficiency can be more than 99%. The more charged the dust particles carry, the higher the filtration efficiency is. Using this feature, the collection efficiency of dust particles above 1.5um can reach 99.99% when charged at the inlet or in front of the inlet of the bag filter.
3、 Dust catcher of coal fired power plant Influence of equipment filter material characteristics
In the weaving filter cloth, the short fiber fabric has more fluff on the surface of the filter material, which is easy to form a relatively stable dust layer, and its filtration efficiency is higher than that of the long fiber fabric. In terms of fabric structure, the filtration efficiency of plain filter is lower, while that of satin and twill is higher. The filtering efficiency of flannelette is higher than that of plain cloth. When the filter material is singly fluffed, a better filtration efficiency can be obtained by facing the dust laden air flow with the non pilling side.
The lower the filtration speed is, the easier it is to form the primary dust layer with small pore size and large porosity, and the more fine dust particles can be trapped. When the filtration speed is too high, the penetration of dust particles into the filter material is intensified, and the filtration efficiency is reduced. The penetration phenomenon can be overcome by selecting appropriate filter media. For some filter materials, the dust removal efficiency is hardly affected when the filtration wind speed changes in a certain range.

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