THERMAL SCIENCE

International Scientific Journal

Giuseppe Canneto

,

Cesare Freda

,

Giacobbe Braccio

NUMERICAL SIMULATION OF GAS-SOLID FLOW IN AN INTERCONNECTED FLUIDIZED BED

ABSTRACT
The gas-particles flow in an interconnected bubbling fluidized cold model is simulated using a commercial CFD package by Ansys. Conservation equations of mass and momentum are solved using the Eulerian granular multiphase model. Bubbles formation and their paths are analyzed to investigate the behaviour of the bed at different gas velocities. Experimental tests, carried out by the cold model, are compared with simulation runs to study the fluidization quality and to estimate the circulation of solid particles in the bed.
KEYWORDS
biomass gasification, interconnected fluidized bed, two-phase flow, Eulerian
PAPER SUBMITTED: 2012-12-20
PAPER REVISED: 2013-12-20
PAPER ACCEPTED: 2013-12-20
PUBLISHED ONLINE: 2014-02-09
DOI REFERENCE: https://doi.org/10.2298/TSCI121220002C
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2015, VOLUME 19, ISSUE Issue 1, PAGES [317 - 328]
REFERENCES
  1. Kalina, J., Fossil Fuel Savings, Carbon Emission Reduction and economic attractiveness of medium-scale integrated biomass gasification combined cycle co-generation plants THERMAL SCIENCE, Year 2012, Vol. 16, No. 3, pp. 827-848
  2. A. Gómez-Barea, B. Leckner, Modeling of biomass gasification in fluidized bed, Progress in Energy and Combustion Science, 36, 2010, 444-509.
  3. D. Kunii, M. Kuramoto. Development of a new system for circulating fluidizing particles within a single vessel, Powder Technology 44 (1985) 77-84.
  4. M. Kuramoto, D Kunii, T. Furusawa, Flow of Dense Fluidized Particles through an opening in a Circulation System. Powder Technology, 47 (1986) 141- 149.
  5. R.D. Abellon, et al., A single radiotracer particle method for the determination of solids circulation rate in interconnected fluidized beds. Powder Technology 92 (1997) 53-60
  6. F.F. Snieders, et al., The dynamics of large particles in a four-compartment interconnected fluidized bed. Powder Technology 101(1999) 229-239.
  7. T. B. Anderson, Roy Jackson, (1967) Fluid Mechanical Description of Fluidized Beds. Equations of Motion - Industrial & Engineering Chemistry Fundamentals (ACS Publications).
  8. M. Syamlal, W. Rogers, and T. O'Brien, MFIX Documentation: Theory Guide, Tech. Note, NTIS Report No. DOE/METC-94/1004 (DE94000087) Springfield, VA
  9. H. Enwald, E. Peirano A.-E. Almstedt, Eulerian two-phase flow theory applied to fluidization, Int. J. Multiphase Flow Vol. 22, Suppl., pp. 21-66, 1996
  10. A. Boemer, H.Qi, and U. Renz, Eulerian simulation of bubble formation at a jet in a two-dimensional fluidized bed. Int. J. Multiphase Flow Vol. 23, No. 5, pp. 927-944, 1997
  11. N. Reuge, et al., Multifluid Eulerian modeling of dense gas-solids fluidized bed hydrodynamics: Influence of the dissipation parameters Chemical Engineering Science 63 (2008) 5540-5551.
  12. FLUENT User's Guide. FLUENT Inc. 2009.
  13. Leon r. Glicksman, Scaling relationships for fluidized beds. Chemical Engineering Science 39 (1984) 1373-1379.
  14. Kunii, D., Levenspiel, O, (1991) Fluidization Engineering, 2nd edn. Butterworth-Heineman, Boston.
  15. L.G. Gibilaro, Fluidization-Dynamics, Butterworth Heinemann, Oxford,2001.
  16. R. Di Felice, S. Rapagna and P. U. Foscolo, Dynamic similarity rules: validity check for bubbling and slugging fluidized beds Powder Technologv, 71 (1992) 281-287
  17. Pier Ugo Foscolo, et al., Design and cold model testing of a biomass gasifier consisting of two interconnected fluidized beds. Powder Technology 173 (2007) 179-188.
  18. D. Geldart, Types of gas fluidization, Powder Technology 7 (1973) 285-292.
  19. B.G.M. van Wachem, et al., Eulerian Simulations of Bubbling Behaviour in Gas-Solid Fluidised Beds Computers chem. Eng. Vol. 22, Suppl.p, p.S 299-S306. 1998.
  20. Ian Hulme, et al., CFD Modeling and Validation of Bubble Properties for a Bubbling Fluidized Bed Ind. Eng. Chem. Res. 2005, 44, 4254-4266
  21. J. A.M. Kuipers, et al., Theoretical and experimental bubble formation at a single orifice in a two-dimensional gas-fluidized bed Chemical Engineering Science, Vol. 46, No. 1 I, pp 2881-2894, 1991
  22. Samuel F. Foerster, et al., Measurements of the collision properties of small spheres Phys. Fluids, Vol. 6, No.3, March 1994.
  23. ***, Cornell University College of Engineering, grainflowresearch.mae.cornell.edu
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Numerical simulation of gas-solid flow in an interconnected fluidized bed

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