Patchy-cleaning interpretation of dust cake release from non-woven fabrics

Seville, JPK, Cheung, W and Clift, R (1989) Patchy-cleaning interpretation of dust cake release from non-woven fabrics Filtration and Separation, 26 (3).

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Abstract

In reverse-flow cleaning of cakes deposited on porous filters, the pressure drop induced across the cake at the point of its detachment is the cleaning stress, ie the tensile stress which must be applied to overcome adhesion of the cake to the medium or the cohesion of the cake itself. A thicker cake requires a smaller pressure gradient for removal and therefore less cleaning gas flow and less pressure drop through the medium itself. Provided that true surface filtration occurs, the cleaning stress should be independent of cake areal mass. J. Sievert and F. Loeffler's data for a singed polyester needlefelt suggests that this is indeed so, and that the cleaning stresses induced by reverse-flow cleaning are close to those required if the filter is cleaned by mechanically-induced acceleration.

Item Type:	Article
Authors :	Name Email ORCID Seville, JPK UNSPECIFIED UNSPECIFIED Cheung, W UNSPECIFIED UNSPECIFIED Clift, R r.clift@surrey.ac.uk UNSPECIFIED
Date :	1 May 1989
Depositing User :	Symplectic Elements
Date Deposited :	17 May 2017 12:09
Last Modified :	17 May 2017 15:01
URI:	http://epubs.surrey.ac.uk/id/eprint/834257

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