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The 12th International Conference on Fluidization - New Horizons in Fluidization Engineering
May 13-17, 2007 - Vancouver, Canada
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Franco Berruti, The University of Western Ontario, London, Canada
Xiaotao (Tony) Bi, The University of British Columbia, Vancouver, Canada
Todd Pugsley, University of Saskatchewan, Saskatoon, Saskatchewan, Canada |
The articles for these proceedings are peer-reviewed.
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Approximate Prediction of Gas-Solid Conversion in Fluidized Bed Reactors
Alberto Gómez Barea, University of Seville and Chalmers Institute of Technology
B. Leckner, Chalmers University of Technology
M. Campoy, University of Seville
ABSTRACT:
A simple method is proposed to evaluate the performance of fluidized bed reactors where an nth-order gas-solid reaction occurs. The method takes into account the fluid dynamics of the fluidized bed by a two-phase flow model and the rates of diffusion in the solid reactant particles (internal and external) by a simple particle model. Approximate analytical expressions are derived in terms of three effectiveness factors: interphasic, external and intraparticle. These account for the contribution of fluid-dynamic and diffusional resistances to the overall mass-transfer resistance. Gas conversion is expressed in terms of four dimensionless governing quantities and the reaction order, in this way facilitating computations. Limiting cases of the general solution are discussed by comparison with analytical solutions found in literature. The methodology can be applied to catalytic or non-catalytic systems under isothermal conditions, where one heterogeneous reaction is involved.
Alberto Gómez Barea, B. Leckner, and M. Campoy, "Approximate Prediction of Gas-Solid Conversion in Fluidized Bed Reactors" in "The 12th International Conference on Fluidization - New Horizons in Fluidization Engineering", Franco Berruti, The University of Western Ontario, London, Canada
Xiaotao (Tony) Bi, The University of British Columbia, Vancouver, Canada
Todd Pugsley, University of Saskatchewan, Saskatoon, Saskatchewan, Canada Eds, ECI
Symposium Series, Volume RP4 (2007). http://services.bepress.com/eci/fluidization_xii/78
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