Factors to consider in the selection of dust collector equipment 1. Air volume (Q) The air volume is the volume of gas that the dust removal equipment can purify in a unit time.Units are cubic meters per hour (m3 / h) or standard cubic meters per hour (Nm3 / h).It is one of the important factors in the design of the bag filter . When designing or selecting a bag type dust collector based on the air volume, generally the dust collector cannot be operated under the specified air volume; otherwise, the filter bag is easily blocked, the life is shortened, the pressure loss is greatly increased, and the dust removal efficiency is also reduced; Choose too much air volume, otherwise it will increase equipment investment and floor space.Reasonable selection of processing air volume is often determined based on process conditions and experience. 2.Using temperature For a bag filter , its use temperature depends on two factors, one is the bearing temperature of the filter material, and the other is the gas temperature above the dew point temperature.Due to the large selection of glass fiber filter materials, its use temperature can reach 280 ° C. Cooling measures are taken for gases higher than this temperature, and warming measures must be taken for gases below the dew point temperature.For bag dust collectors , the relationship between the use temperature and the dust removal efficiency is not obvious. This is different from electric dust removal. For electric dust collectors , changes in temperature will affect the specific resistance of the dust and affect the dust removal efficiency. 3.Inlet dust concentration That is, the inlet dust concentration is determined by the process of the dusting point. When designing or selecting a bag type dust collector , it is another important factor behind the air volume.Expressed in g / m3 or g / Nm3. 4.Dust concentration at the outlet The dust concentration at the outlet refers to the discharge concentration of the dust collector , and it is expressed in the same way as the dust concentration at the inlet. The size of the dust concentration at the outlet should be based on local environmental protection requirements or user requirements. The discharge concentration of the bag dust collector can generally reach 50 g / Nm3 or less. 5.Pressure loss The pressure loss of bag dust removal refers to the pressure drop, or resistance, of the gas from the inlet to the outlet of the dust collector .The pressure loss of bag dust removal depends on the following three factors: 压力 Pressure loss of equipment structure. ⑵ Pressure loss of filter media.Related to the properties of the filter (such as porosity, etc.). (3) Pressure loss of the dust layer accumulated on the filter material. 6.Operating pressure The operating pressure of the bag filter is based on the static pressure value of the device before and after the dust collector and the fan and its installation position, and it is also the design pressure value of the bag filter . 7.Filter speed Filtration speed is an important factor in the design and selection of a bag filter . Its definition is the speed of filtering gas passing through the filter material, or the ratio of the air volume passing through the filter material and the filter material area.The unit is expressed in m / min.