Gas-solids flow structures in a novel circulating-turbulent fluidized bed

AIChE Journal

Volumn 54, Issue 5, 2008, Pages 1213-1223

  Zhu, Haiyan ^a   Zhu, Jesse ^a  

^a UNIVERSITY OF WESTERN ONTARIO   (Canada)

Author keywords

Circulating turbulent fluidized bed; Gas solid fluidization; High density; Hydrodynamics; Multi phase flow; New design; Particle technology

Indexed keywords

CONCENTRATION (PROCESS); FLOW STRUCTURE; HYDRODYNAMICS; TURBULENT FLOW;

CIRCULATING-TURBULENT FLUIDIZED BED; GAS-SOLID FLUIDIZATION; HIGH DENSITY; PARTICLE TECHNOLOGY;

TWO PHASE FLOW;

CONCENTRATION (PROCESS); FLOW STRUCTURE; HYDRODYNAMICS; TURBULENT FLOW; TWO PHASE FLOW;

EID: 43749090812     PISSN: 00011541     EISSN: 15475905     Source Type: Journal    
DOI: 10.1002/aic.11432     Document Type: Article

References (36)

1. Kunii D, Levenspiel O. Fluidization Engineering. London: Butterworth-Heinmann, 1991.
2. Grace JR, Bi HT. Introduction to circulating fluidized beds. In: Grace JR, Avidan AA, Knowlton TM, editors. Circulating Fluidized Beds. London: Chapman & Hall, 1997:1-18.
3. Grace JR. Reflections on turbulent fluidization and dense suspension upflow. Powder Technol. 2000;113:242-248.
4. Li Y, Kwauk M. The dynamics of fast fluidization. In: Grace JR, Matsen JM, editors. Fluidization. New York: Plenum Press, 1980: 537-544.
5. Bai DR, Jin Y, Yu ZQ, Zhu JX, The axial distribution of the cross-sectionally averaged voidage in fast fluidized beds. Powder Technol. 1992;71:51-58.
6. Issangya AS, Bai D, Bi HT, Lim KS, Zhu J, Grace JR. Suspension densities in a high-density circulating fluidized bed riser. Chem Eng Sci. 1999;54:5451-5460.
7. Yerushalmi J, Avidan A. High velocity fluidization. In: Davidson JF, Clift R, Harrison D, editors. Fluidization. London: Academic Press, 1985:225-291.
8. Bai D, Shibuya E, Masuda Y, Nishio K, Nakagawa N, Kato K. Distinction between upward and downward flows in circulating fluidized beds. Powder Technol. 1995;84:75-81.
9. Nieuwland JJ, Meijer R, Kuipers JAM, van Swaaij WPM. Measurements of solids concentration and axial solids velocity in gas-solid two-phase flows. 1996;87:127-139.
10. Dry RJ, Christensen IN, White CC. Gas-solids contact efficiency in a high-velocity fluidised bed. 1987;52:243-250.
11. Divilio RJ, Boyd TJ. Practical implications of the effect of solids suspension density on heat transfer in large-Scale CFB boilers. In: Avidan AA, editor. Circulating Fluidized Bed Technology, Vol. IV. New York: AIChE, 1994:334-339.
12. Lim KS, Zhu JX, Grace JR. Hydrodynamics of gas-solid fluidization. Int J Multiphase Flow. 1995;21:141-193.
13. Bi HT, Ellis N, Abba IA, Grace JR. A state-of-the-art review of gas-solid turbulent fluidization. Chem Eng Sci. 2000;55:4789-4825.
14. Bi HT, Zhu JX. Static instability analysis of circulating fluidized beds and concept of high-density risers. AIChE J. 1993;39:1272-1280.
15. Zhu JX, Bi HT. Distinctions between low density and high density circulating fluidized beds. Can J Chem Eng. 1995,73:644-649.
16. Issangya AS, Bai D, Grace JR, Lim KS, Zhu J. Flow behaviour in the riser of high-density circulating fluidized bed. AIChE Symp Ser. 1997;93:25-30.
17. Issangya AS, Grace JR, Bai DR, Zhu JX. Further measurements of flow dynamics in a high-density circulating fluidized bed riser. Powder Technol. 2000;111:104-113.
18. Grace JR, Issangya AS, Bai DR, Bi HT, Zhu JX. Situating the high-density circulating fluidized bed. AIChE J. 1999;45:2108-2116.
19. Kim SW, Kirbas G, Bi HT, Lim CJ, Grace JR. Flow behaviour and regime transition in a high-density circulating fluidized bed riser. Chem Eng Sci. 2004:59:3955-3963.
20. Bi XT. Gas and solid mixing in high-density CFB risers. Int J Chem Reactor Eng. 2004;2:A12.
21. Pärssinen JH, Zhu JX. Axial and radial solids distribution in a long and high-flux CFB riser. AIChE J. 2001;47:2197-2205.
22. Pärssinen JH, Zhu JX. Particle velocity and flow development in a long and high-flux circulating fluidized bed riser. Chem Eng Sci. 2001;56:5295-5303.
23. Manyele SV, Pärssinen JH, Zhu JX. Characterizing particle aggregates in a high-density and high-flux CFB riser. Chem Eng J. 2002;88:151-161.
24. Mastellone ML, Arena U. The effect of particle size and density on solids distribution along the riser of a circulating fluidized bed. Chem Eng Sci. 1999;54:5383-5391.
25. Zhang H, Johnston PM, Zhu JX, de Lasa HI, Bergougnou MA. A novel calibration procedure for a fiber optic solids concentration probe. Powder Technol. 1998;100:260-272.
26. Werther J, Hage B, Rudnick C. A comparison of laser Doppler and single-fibre reflection probes for the measurement of the velocity of solids in a gas-solid circulating fluidized bed. Chem Eng Process. 1996;35:381-391.
27. Reddy BV, Basu P. Effect of pressure and temperature on cluster and particle heat transfer in a pressurized circulating fluidized bed. Int J Energy Res. 2001;25:1263-1274.
28. Louge M, Chang H. Pressure and voidage gradients in vertical gas-solid risers. Powder Technol. 1990;60:197-201.
29. Malcus S, Cruz E, Rowe C, Pugsley TS. Radial solid mass flux profiles in a high-suspension density circulating fluidized bed. Powder Technol. 2002;125:5-9.
30. Marzocchella A, Zijerveld RC, Schouten JC, van den Bleek CM. Chaotic behavior of gas-solids flow in the riser of a laboratory-scale circulating fluidized bed. AIChE J. 1997;43:1458-1468.
31. Cui HP, Mostoufi N, Chaouki J. Characterization of dynamic gas-solid distribution in fluidized beds. Chem Eng J. 2000;79:133-143.
32. Bai D, Issangya AS, Grace JR. Characteristics of gas-fluidized beds in different flow regimes. Ind Eng Chem Res. 1999;38:803-811.
33. Bader R, Findlay J, Knowlton TM. Gas/solid flow patterns in a 30.5-cm-diameter circulating fluidized bed. In: Basu P, Large JF, editors. Circulating Fluidized Bed Technology, Vol. 11. Oxford: Pergamon Press,1988:161-165.
34. Hartge EU, Rensner D, Werther J. Solids concentration and velocity patterns in circulating fluidized beds. In: Basu P, Large JF, editors. Circulating Fluidized Bed Technology, Vol. 11. Oxford: Pergamon Press,1988:165-180.
35. Noymer PD, Glicksman LR. Near-wall hydrodynamics in a scalemodel circulating fluidized bed. Int J Heat Mass Transfer. 1999; 42:1389-1403.
36. Liu JZ, Grace JR, Bi HT, Morikawa H, Zhu JX. Gas dispersion in fast fluidization and dense suspension upflow. 1999;54:5441-5449.