How should baghouse selection?

1, the temperature for the baghouse, its temperature depends on two factors, the first is the media’s maximum temperature, and the second is the gas temperature must be above the dew point. For bag filter, the use of temperature and dust removal efficiency relationship is not obvious, it is different from the electrostatic precipitator of ESP, the temperature change will affect specific resistance and other effects of dust collection efficiency. 2, the dust concentration at the entrance to the baghouse, the inlet dust concentration will directly affect the following factors: ⑴ pressure loss and cleaning cycle. Inlet concentration increases, fouling on the same filter area fast speed, pressure loss increases, the result is to be increased cleaning frequency. ⑵ bag and box wear. In the case of strong abrasive dust, the amount of wear can be considered proportional to the concentration of dust. ⑶ whether the necessary advance dust. Dust is dust in advance before the entrance to add a dedusting equipment, also known as pre-dust. ⑷ rows of gray ash capacity device. Ash ash capacity device should be able to accept all the discharged dust prevail, dust inlet dust concentration multiplied by an amount equal treatment capacity. ⑸ operation. Bag filter is divided into positive and negative two modes of operation, in order to reduce fan wear, large inlet concentration should not use positive pressure mode of operation. 3, the outlet dust concentration in the outlet dust concentration refers to the concentration of dust emissions, it expressed the same way as the inlet dust concentration, dust concentration should be the size of the outlet to the local environmental protection requirements or the requirements of users prevail, baghouse emission concentration Usually to achieve 50g / Nm3 or less. 4, air volume air volume refers to the removal device in the unit time of the volume of gas that can be purified. Units of cubic meters per hour (m3 / h) or standard cubic meters per hour (Nm3 / h). Baghouse is one of the most important design factor. According to air flow when designing or selecting baghouse, precipitator generally can not run at more than a predetermined amount of air, otherwise, the bag easy to plug, shortened life expectancy, drastically increase the pressure loss, collection efficiency should be reduced; but not the selected air volume is too large, otherwise the increase in investment in equipment and floor space. Rational selection process is often based on the amount of wind technology and experience to decide.