Comparison of Performance of Three Kinds Rotating Distributors in Bubbling Fluidized Bed

Document Type : Research Article

Authors

Process Intensification Research Lab., Department of Chemical Engineering, Yasouj University, P.O. Box 75918-74831 Yasouj, I.R. IRAN

Abstract

In the present study, a bubbling fluidized bed was constructed. Three kinds of rotating distributors with hexagonal, blade, and swirling configurations of holes have been studied. The analysis of the experimental data showed that rotational speed and input air velocity are the key parameters that influence the fluidization quality and its minimum velocity. Through the comparison of different configurations of rotating distributors in bubbling fluidized bed, it was observed that the blade configuration of holes has the best operation in terms of fluidization quality.

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[1] Yasui G., Johanson L.N., Characteristics of Gas Pockets in Fluidized Beds, AlChE. J., 4:445-452 (1958).
[2] Whitehead A.B., Young A.D., Fluidization Performance in Large Scale Equipment,PartI, Proc. Intern. Symp. on Fluidization, Eindhoven, Netherlands, 284-293 (1967).
[3] Werther J., Influence of the Bed Diameter on the Hydrodynamics of Gas Fluidized Beds, AlChE. Symp. 141(70): 53-62 (1974).
[4] Tomita M., Adachi T., The Effect of Bed Diameter on the Behavior of Bubbles in Gas–Solid Fluidized Beds, J.Chem. Eng. Jpn, 6: 196-201 (1973).
[5] Sobrino C., Acosta-iborra A., Santana D., Vega M. D., Bubble Characteristics in a Bubbling Fluidized Bed with a Rotating Distributor, Int. J. Multiphase Flow., 35: 970-976 (2009).
[6] Sobrino C., "Experimental Study of a Bubbling Fluidized Bed with a Rotating Distributor", Ph.D. Thesis, Universidad Carlos III de Madrid (2008).
[7] Sobrino C., Almedros-Ibáñez J.A., Santana D., Vega M.D., Fluidization of Group B Particles with a Rotating Distributor, Powder Technol., 181: 273-280 (2008).
[8] کهساری، سونا؛ فرج­پور، عصمت؛ اثر سامانه­ی توزیع­کننده هوا بر رژیم­های جریان حبابی، نگه­داشت گاز و انتقال اکسیژن در بیوراکتور هواگرد داخلی، نشریه شیمی و مهندسی شیمی ایران، (2)28 : 87 تا 95 (1388).