Journal of Engineering Physics and Thermophysics

, Volume 77, Issue 6, pp 1121–1133 | Cite as

Mixing of particles in apparatuses with a circulating fluidized bed

  • Yu. S. Teplitskii
  • V. I. Kovenskii
  • E. F. Nogotov
  • V. A. Borodulya
Hydrodynamics and Heat Exchange in Dispersed Flows


A phenomenological model of mixing of particles in a circulating fluidized bed has been formulated; a distinctive feature of the model is allowance for convective particle fluxes in the radial direction that ensure a substantial decrease observed in practice in the concentration of the particles over the riser’s height. As a result of a comparison of experimental and calculated mixing curves it has been established that the value of the coefficient of radial dispersion of the particles lies in the interval 0.0006–0.006 m2/sec.


Statistical Physic Radial Direction Distinctive Feature Transport Phenomenon Riser 
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  1. 1.
    A. P. Baskakov, in: V. G. Ainshtein and A. P. Baskakov (Eds.), Fluidization [in Russian], Khimiya, Moscow (1991), pp. 333–395.Google Scholar
  2. 2.
    Yu. S. Teplitskii and E. F. Nogotov, Mixing of particles in a circulating fluidized bed, Inzh.-Fiz. Zh., 75, No. 3, 9–16 (2002).Google Scholar
  3. 3.
    F. Wei, Z. Wang, Y. Jin, et al., Dispersion of lateral and axial solids in a cocurrent down-flow circulating fluidized bed, Powder Technol., 81, 25–30 (1994).Google Scholar
  4. 4.
    S. G. Patience and J. Chaouki, Solids hydrodynamics in the fully developed region of CFB risers, in: Proc. 8th Eng. Found. Conf. on Fluidization, Vol. 1, Tours (1995), pp. 33–40.Google Scholar
  5. 5.
    Yu. S. Teplitskii, Near-wall hydrodynamics of a circulating fluidized bed, Inzh.-Fiz. Zh., 74, No. 5, 177–181 (2001).Google Scholar
  6. 6.
    B. A. Borodulya and Yu. S. Teplitskii, Scale transition in a circulating bed, in: Proc. III Minsk Int. Forum “Heat and Mass Transfer-MIF-96” [in Russian], May 20–24, 1996, Vol. 5, Minsk, 1996, pp. 69–74.Google Scholar
  7. 7.
    Yu. S. Teplitskii and V. I. Kovenskii, Resistance of a circulating fluidized bed, Inzh.-Fiz. Zh., 74, No. 1, 62–66 (2001).Google Scholar
  8. 8.
    Yu. S. Teplitskii, Formulation of boundary-value problems of longitudinal mixing of particles in circulating fluidized beds, Inzh.-Fiz. Zh., 76, No. 1, 80–83 (2003).Google Scholar
  9. 9.
    B. Bader, J. Findlay, and T. M. Knowlton, Gas/solids flow patterns in a 30.5-cm-diameter circulating fluidized bed, in: P. Basu and J. F. Large (Eds.) Circulating Fluidized Bed Technology, Compiegne (1988), pp. 123–128.Google Scholar

Copyright information

© Springer Science+Business Media, Inc. 2004

Authors and Affiliations

  • Yu. S. Teplitskii
    • 1
  • V. I. Kovenskii
    • 1
  • E. F. Nogotov
    • 1
  • V. A. Borodulya
    • 1
  1. 1.A. V. Luikov Heat and Mass Transfer InstituteNational Academy of Sciences of BelarusMinskBelarus

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