title: The effect of operating conditions on resistance parameters of filter media and limestone dust cake for uniformly loaded needle felts in a pilot scale test facility at ambient conditions.
abstract: Resistance parameters are essential for the prediction of pressure drop in bag filters. The reported values for limestone dust differ in magnitude and also depend on operating parameters. In this work, experimental data is provided from a pilot scale pulse-jet regenerated bag filter test facility for three types of needle felts using air and limestone dust at ambient conditions. Results reveal that specific resistance of filter media is independent of velocity while the specific resistance of filter cake increases linearly with filtration velocity. Residual pressure drop is almost constant, independent of upper pressure drop limit. The cake resistance at constant velocity fits to a second degree polynomial whereas it increases linearly with the velocity. A linear relation is reported here for all the cases. The resistance of filter cake decreases at higher upper pressure drop limit.
authors.affiliation: Institut of Chemical Engineering and Technology, University of the Punjab, Quaid-i-Azam Campus, Lahore-54590, Pakistan ; Graz University of Technology, Graz, Austria.
authors.forename: Mahmood
authors.initials: M
authors.lastname: Saleem
authors.affiliation: Graz University of Technology, Graz, Austria.
authors.forename: Gernot
authors.initials: G
authors.lastname: Krammer
authors.affiliation: Graz University of Technology, Graz, Austria.
authors.forename: M Suleman
authors.initials: MS
authors.lastname: Tahir
keywords: Cake properties; Needle felt; Off-gas purification; Operating parameters; Pulse-jet bag filter