Abstract
A standard testing method was applied to measure the evolutions of pressure drop during the dust collection by five fabric filters with different surface treatments on a base filtration material. The measurement was repeated until the number of pulse-jet cleaning reaches to 100. In general, the filtration cycle of a pulse jet cleaning filter consists of three stages, i. e., inner filtration, uniform dust layer formation and surface filtration. However, it was found that the inner filtration stage does not appear when the base filter is laminated with a membrane and entangled fiber layer. The present paper analyzed and discussed the effects of filter surface characteristics and base material structure on the pressure drop evolution during a filtration cycle in terms of the duration of three stages.
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