Prediction and Measurement of the Pressure and Velocity Distributions in Cylindrical and Tapered Rigid Ceramic Filters

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A rigid ceramic filter is an effective gas filtration device to remove particles from gases at high temperature. It is important to study the gas flow dynamics in both the filtration and reverse flow mode in order to achieve better filter cleaning. Previous studies have shown that the axial pressure and velocity profiles are not usually uniformly distributed along the filter element. The non-uniformities may lead to insufficient filter cleaning. The uneven pressure difference across the wall of the filter element can be reduced by employing a tapered filter. A one-dimensional model is developed to predict the pressure and flow rate profiles, taking into account for the effects of both momentum changes and friction. The calculations show a good agreement with the experimental results. It is found that the friction factor term in the model has a strong influence in the reverse flow simulation. (C) 2003 Elsevier B.V. All rights reserved.


Original languageEnglish
Pages (from-to)47-60
Number of pages14
JournalSeparation and Purification Technology
Issue number1
Publication statusPublished - 1 Nov 2004


  • ceramic filters, tapered filter, flow resistance, friction factor, pressure difference