Fluid Dynamic Study of the Fluidized Bed Wit Jambu Seeds (Sphilantes oleracea L.)

Abstract:

This work has as objective the study experimental and computational of the hydrodynamics of gas-solid fluidized bed. The gas-solid fluidized beds present important applications in chemical industry; among typical examples of fluidized beds some applications could be outlined: the syntheses and catalytic reactions, the catalytic regeneration, the combustion and gasification of coal, coating, drying, etc. The simulated data were obtained through the commercial CFD (Computational fluid dynamics), and the results were compared to those obtained by experiments conducted in a fluidized bed, containing jambu seeds (Sphilantes oleracea L.) of 772.21  2.98 μm in diameter, sphericity de 0.45  0.0066, bulk density 1130.8 ± 0.22 Kg/m3 and with porosity 0.2303  0.0099. In this work the porosity profile and characteristic curve of fluidized bed were calculated by using an Eulerian multiphase model. The comparisons showed a very good agreement between experimental and simulation results.

• Periodical: Materials Science Forum (Volumes 660-661)
• Pages: 413-418
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.660-661.413
• Online since: October 2010
• Authors: R.O. Lourenço, C.M.L. Costa, Cristina dos Santos Rocha Sandra, A.L.A. Mesquita, E.N. Macêdo
• Keywords: Computational Fluid Dynamics (CFD), Fluidized Bed

References

[1] D. Kunii and O. Levenspiel: Fluidization Engineering. (Butter-worth-Heinemann, Inc. 2nd edition, 1991).

[2] C.H. Wen and Y.H. YU: AIChE. Vol. 12 (1966), p.610.

[3] J.R. Grace: Handbook of multiphase Systems. In: G. Hetsroni (Hemisphere Publishing Corporation: Nova York, 1982).

[4] F. Taghipour, N. Ellis, and C. Wong: Chemical Engineering Communication Vol. 60 (2005), p.6857.

[5] D. Gidaspow, R. Bezburuah and J. Ding: Hydrodynamics of Circulating Fluidized Beds: Kinetic Theory Approach. 7th Engineering Foundation Conference on Fluidization. Procceding… (1992), p.75.

[6] C. Y. Wen and Y. H. Yu: Chem. Eng. Prog. Symp. Series Vol. 62 (1966), p.100.

[7] S. Ergun: Chem. Eng. Prog. Vol. 48 (2) (1952), p.89.

[8] S. Ogawa, A. Umemura and N. J. Oshima: Appl. Math. Phys. Vol. 31 (1980), p.483.

[9] J. Ding and D. Gidaspow: AIChE Journal Vol. 36 (1990), p.523.

[10] S.P. Babu, B. Shah and A. Talwalkar: AIChe Symposium Series Vol. 74 (1978), p.176.

[11] J.R. Grace: Handbook of multiphase Systems. In: G. Hetsroni (Hemisphere Publishing Corporation: Nova York, 1982).

[12] A. Lucas, J. Arnaldos, J. Casal and L. Puigjaner: Chemical Engineering Comunication Vol 41 (1986), p.121.