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CFD simulation of gas-solid bubbling fluidized bed containing FCC particles

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Abstract

The hydrodynamics of a bubbling gas-solid fluidized bed of 57.4 μm FCC particles was simulated by using a state-of-the-art two-fluid model integrating the kinetic theory of granular flow for particulate phase stresses. The overestimation of the bed expansion was resolved by using a suitable scale factor in the drag model as suggested by McKeen and Pugsley (T.R. McKeen, T.S. Pugsley, Powder Technol., 129, 139 (2003)). This study showed that the method was appropriate in simulation of a gas-solid fluidized bed of Geldart A particles at high gas velocities (0.3 to 0.61 m/s). The reduction of computational time especially for simulation of large-scale systems was achieved. The time-averaged local voidage was compared with the experimental data and the trend of varying several parameters on the hydrodynamic of the bed was investigated. The simulation results showed both qualitative and quantitative agreement with the literature.

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Authors and Affiliations

  1. Department of Chemical Engineering, University of Sistan and Baluchestan, Zahedan, 98164-161, Iran

    Seyyed Hossein Hosseini, Rahbar Rahimi, Mortaza Zivdar & Abdolreza Samimi

Authors
  1. Seyyed Hossein Hosseini
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  2. Rahbar Rahimi
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  3. Mortaza Zivdar
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  4. Abdolreza Samimi
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Correspondence to Seyyed Hossein Hosseini.

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Hosseini, S.H., Rahimi, R., Zivdar, M. et al. CFD simulation of gas-solid bubbling fluidized bed containing FCC particles. Korean J. Chem. Eng. 26, 1405–1413 (2009). https://doi.org/10.1007/s11814-009-0220-9

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  • DOI: https://doi.org/10.1007/s11814-009-0220-9

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