With the development of economy, the state has shifted its focus from enterprise benefits to environmental protection. The chemical industry should pay more attention to the discharge of pollutants in the production process. In the past year, the chemical industry has shown a trend of continuous growth. In addition to the changes in quantity, they also gradually began to pay attention to the improvement of growth efficiency. The emission and pollution of dust and waste gas in the chemical industry is a headache for every enterprise. How can it be alleviated or completely eliminated? It can't do without chemistry Industrial dust collector Let's talk about the choice of Wet electrostatic precipitator Come on!

With more and more diversified dust collectors on the market, how to select them has become a problem: Wet electrostatic precipitator Desulfurization dust remover, spray paint room dust remover, electric furnace dust remover, bag type dust remover and so on all have certain specific dust removal capacity, which is suitable for different environments.

1. Treatment air volume

The treated air volume refers to the amount of gas that can be purified by the dedusting equipment in unit time. The unit is cubic meter/hour (m3/h) or cubic meter/hour (Nm3/h). It is one of the important factors in the design of bag filter.

When designing or selecting bag filter according to air volume, it is generally impossible to make the filter screen run beyond the specified air volume; Otherwise, the filter bag is easy to be blocked, its service life will be shortened, the pressure loss will be greatly increased, and the dust removal efficiency will also be reduced. However, too much air volume shall not be selected, otherwise the equipment investment and floor area will be increased. Reasonable air volume selection is often based on process conditions and experience.

2. Service temperature

For the bag filter, its operating temperature depends on two factors, one is the maximum bearing temperature of the filter material, and the other is that the gas temperature must be higher than the dew point temperature. At present, due to the large selection of glass fiber filter material, its maximum temperature can reach 280 ℃. Cooling measures must be taken for gases higher than the dew point temperature, and heating measures must be taken for gases lower than the dew point temperature. More PPS filter materials are now used. The temperature is 170 degrees. For the bag filter, the relationship between the working temperature and the dust removal efficiency is not obvious, which is different from the electrostatic precipitator. For static Electrostatic precipitator For example, the temperature change will affect the dust removal efficiency, such as the specific resistance of dust.

3. Inlet dust concentration

That is, in the design or selection of bag filter, the inlet dust concentration is another important factor in addition to the treatment air volume, which is determined by the dust point process. Expressed in g/m3 or g/Nm3.