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Flow of Gas-Solid Mixtures through Standpipes and Valves

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Multiphase Science and Technology

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Abstract

The subject matter of this chapter is the flow of a gas-solid mixture in a pipe and through an orifice: the flow of the granular solid will be downward, while the flow of the gas may be cocurrent or countercurrent to the solid. Such a pipe, with a downflow of particulate solid, is often referred to as a standpipe. It can be a vertical pipe connected to the bottom opening of a hopper, a cyclone dipleg, or a solids transfer line for transferring solids out of a fluidized bed. Examples of standpipes can be found in the hydrocarbon cracking process, the Fischer-Tropsch process, the coal gasification and liquefaction processes, and other processes involving the downflow of solids in a pipe. A number of such processes have been described by Zenz and Othmer (1960) and by Kunii (1980). The flow of solids through an orifice is often associated with the downflow of solids through a pipe where a valve (i.e., an orifice) is present at one or both ends of a standpipe.

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Authors and Affiliations

  1. Department of Chemical Engineering, University of Queensland, St. Lucia, 4067, Australia

    L. S. Leung

  2. Geelong Refinery, Shell Refining (Aust.) Pty. Ltd., Geelong, Victoria, Australia

    P. J. Jones

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  1. L. S. Leung
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  2. P. J. Jones
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Editors and Affiliations

  1. Thermal Hydraulics Division, U.K. Atomic Energy Authority, Harwell Laboratory, England

    G. F. Hewitt

  2. Department of Chemical Engineering and Chemical Technology, Imperial College of Sciences and Technology, London, England

    G. F. Hewitt

  3. Centre d’Etudes Nucléaires de Grenoble, Service des Transferts Thermiques, Grenoble, France

    J. M. Delhaye

  4. Division of Reactor Safety Research, U.S. Nuclear Regulatory Commission, Washington, D.C., USA

    N. Zuber

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Leung, L.S., Jones, P.J. (1986). Flow of Gas-Solid Mixtures through Standpipes and Valves. In: Hewitt, G.F., Delhaye, J.M., Zuber, N. (eds) Multiphase Science and Technology. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-01657-2_5

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