The compression properties of IGCC (integrated coal gasification combined cycle) fly ash cake on a ceramic filter were carefully investigated under well-controlled conditions. Overall cake porosity and pressure drop of dust cake of three different particles of geometric mean diameters of 3.7, 6.2, and 12.1 μm, and dynamic shape factors of 1.37, 1.57 and 1.65, respectively, were investigated, at face velocities of 0.02-0.06 m/s. Overall cake porosity was strongly dependent on face velocity, mass load, and particle size. The expressions for overall cake porosity, considering the compression effect, and pressure drop across the dust cake were developed with good agreement with experimental results.
Hemmer G, Berbner S, Umhauer H, Kasper G, "The Separation Efficiency of Ceramic Barrier Filters Determined at High Temperature by Optical Size and Concentration Measurement," High Temperature Gas Cleaning, Vol. 2, Ed. by A. Diller et al., 220, 1999