Effective dust cleaning intensity of high temperature filter bag

Abstract

In order to investigate the effective dust cleaning intensity of high temperature filter bag, the maximum peak pressures on the internal filter bag surface and pressure drops of the filter were tested on a size Φ120 mm×2 000 mm filter bag made of FuMeiSi(FMS) needle felt, and the wear of the filter bag was also observed in this study. The results show that the maximum peak pressure has a rational distribution values in which the filter bag has a good cleaning effect with less wear on filter bag. For fly ashes, the average value 876 Pa of maximum peak pressure along the height of the filter bag could meet the cleaning requirements of the filter. The bigger the maximum peak pressure was, the better the cleaning effect was. However, when the average value of filter bag's the maximum peak pulse pressure exceeded 2 713 Pa, the cleaning effect only increased slightly. Moreover, the filter bag would be worn out to cause excessive cleaning once the maximum peak pulse pressure exceeded 5 282 Pa in some part of the filter bag