Advances in gas permeability measurements

Authors

  • Dr. Godwin J. I. Igwe,

    1. Postgraduate School of Studies in Powder Technology, Department of Chemical Engineering, University of Bradford, Bradford/England
    Current affiliation:
    1. Department of Chemical/Petrochemical Engineering, University of Science & Technology, Private Mail Bag 5080, Port Harcourt/Nigeria
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  • Dr. Terence Allen

    1. Postgraduate School of Studies in Powder Technology, Department of Chemical Engineering, University of Bradford, Bradford/England
    Current affiliation:
    1. 305 Highland Drive, Highway Meadows, Hokassin, Wilmington, Delaware 19707, USA
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Abstract

The Carman-Arnell equation relates the rate of flow of a fluid through a packed bed to the pressure drop across the bed. This equation is the basis for surface area determination by permeametry. It is found that the surface area measured at sub-atmospheric pressure varies with the bed porosity, so a porosity was selected where the rate of change was at a minimum. The study suggests that, at reduced pressures, the gas flow rate is a linear function of the mean pressure.

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