Experimental Study on the Hydrodynamics of Swirling Fluidized Bed


Article Preview

In recent years, the Swirling Fluidized Bed has been regarded as one of the novel designs in fluidization technology. This new technique features an annular blade distributor which injects the fluidizing gas through a certain inclination, is capable of fluidizing the bed and at the same time causes swirling motion of particles in a circular trajectory. In the present work, the fluidization characteristics and hydrodynamics of a swirling bed are studied using an experimental approach. The behavior of gas-particle interaction in a swirling bed in terms of operation regimes, trend of pressure drop across the bed and the hysteresis effect, are explored with varying bed configurations. Seven sets of particles, three in spherical shape, two in cylindrical shape and two in irregular shape, are used as bed material by considering bed weights from 500 g to 2000 g and blade overlap angles 18° for air velocities up to approximately 3.5 m/s and blade inclination of 10°. The results evidently showed that particle configurations dramatically affect the beds’ behavior.



Edited by:

Mohamed Othman




G. J. Jun et al., "Experimental Study on the Hydrodynamics of Swirling Fluidized Bed", Applied Mechanics and Materials, Vols. 229-231, pp. 756-760, 2012

Online since:

November 2012




[1] W. C. Yang, Foreword in Handbook of Fluidization and Fluid-Particle, Systems CRC Press, USA (2003).

[2] K. V. Vinod, M. Jeevaneswary, and V. R. Raghavan, Experimental Studies on the Effect of Blade Overlap Angle on Bed Pressure Drop in a Swirling Fluidized Bed, in International Conference on Plant, Equipment and Reliability, Kuala Lumpur, Malaysia (2010).

[3] B. Sreenivasan and V. R. Raghavan, Hydrodynamics of a Swirling Fluidized Bed, Chemical Engineering and Processing, p.41, 99-106 (2002).

[4] M. M. Paulose, Hydrodynamic Study of Swirling Fluidized Bed and The Role of Distributor, Ph.D. thesis, School of Eng., Cochin University of Science and Technology, Kerala, India (2006).

[5] J. Shu, V. I. Lakshmanan and C. E. Dodson, Hydrodynamic study of a toroidal fluidized bed reactor, Chemical Engineering and Processing, 39(6), pp.499-506 (2000).

DOI: https://doi.org/10.1016/s0255-2701(00)00097-0

[6] M. F. M. Batcha and V. R. Raghavan V. R., Experimental Studies on a Swirling Fluidized Bed with Annular Distributor, Journal of Applied Sciences, 11, pp.1980-1986 (2011).

DOI: https://doi.org/10.3923/jas.2011.1980.1986

[7] F. Ouyang and O. Levenspiel, Spiral Distributor for Fluidized Beds, Industrial and Engineering Chemistry Process Design and Development, 25(2), pp.504-507 (1986).

DOI: https://doi.org/10.1021/i200033a026

[8] A. Bejan, A, Shape and Structure, from Engineering to Nature, Cambridge University Press, Cambridge, UK (2000).