Filter bag filter speed and service life
Bag-type dust remover should choose appropriate filter wind speed to avoid dust containing airflow scour dust filter bag leading to damage of filter bag;In addition, the selection of the filter speed is also related to the material of the filter bag.According to the current domestic power plant widely used imported PPS PPS (Poly real Phenylene Sulfide) fiber filter bag as a benchmark, usually ≯ pure bag filter filtration wind speed 1 m/min, and electricity composite filter bag in bag filter wind speed from the 1 ~ 1. 2 m/min, that is to say, in the same conditions, the area of the electricity composite filter bag filter bag than pure filter bag bag filter can reduce the area of about 16. 7%.The cost of combined bag filter is less than that of pure bag filter.
From the perspective of the service life of the filter bag, the expected service life of the filter bag of the electric bag combination dust remover should be higher than that of the pure cloth bag dust remover, but the appearance time of the electric bag combination dust remover is still short, and there is no such data in China.Therefore, whether it is electric bag combined precipitator or pure cloth bag precipitator, the service life of its filter bag (imported PPS fiber) in engineering application is generally required to be about 30 000 h. From this point alone, it can be seen that the electric bag combined precipitator has not reached the expected goal of extending the service life of the filter bag.
