A model for cluster size in risers

Powder Technology

Volumn 199, Issue 1, 2010, Pages 48-54

  Subbarao, Duvvuri ^a  

^a PETRONAS CARIGALI SDN BHD   (Malaysia)

Author keywords

Circulating fluidized bed; Cluster size; Drag coefficient; Fast fluidized beds; Riser; Two phase flow

Indexed keywords

CIRCULATING FLUIDIZED BED; CLUSTER SIZE; CLUSTER SIZES; CLUSTER VOLUME; EXPERIMENTAL OBSERVATION; FAST FLUIDIZED BED; GAS-SOLID FLOWS; IN-LINE; SLIP RATIO; VOID VOLUME; VOLUMETRIC FRACTIONS;

AGGLOMERATION; CLUSTER ANALYSIS; DRAG; DRAG COEFFICIENT; FLOW OF SOLIDS; FLUIDIZATION; FLUIDIZED BED PROCESS; TWO PHASE FLOW; VOID FRACTION;

FLUIDIZED BEDS;

ANALYTIC METHOD; ANALYTICAL PARAMETERS; ARTICLE; CLUSTER SIZE; CONTROLLED STUDY; DRAG COEFFICIENT; FLOW KINETICS; FLUID TRANSPORT; FLUIDIZATION; FLUIDIZED BED; GAS FLOW; GAS TRANSPORT; HYDRODYNAMICS; MATHEMATICAL ANALYSIS; MATHEMATICAL MODEL; PARTICLE SIZE; PHASE TRANSITION;

EID: 75749099369     PISSN: 00325910     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.powtec.2009.04.015     Document Type: Article

References (22)

1. Yerushalmi J., Cankurt N.T., Geldart D., Liss B., and Gluckman M.J. Flow regimes in vertical gas-solid contact systems. AIChE Symp. Ser. 74 176 (1976) 1-13
2. Yerushalmi J., and Cankurt N.T. Further studies on regimes of fluidization. Powder Technol. 24 (1979) 187-205
3. Horio M., and Kuroki H. Three dimensional flow visualization of dilutely dispersed solids in bubbling and circulating fluidized beds. Chem. Eng. Sci. 49 (1994) 2413-2421
4. Harris A.T., Davidson J.F., and Thorpe R.B. The prediction of particle cluster properties in the near wall region of a vertical riser. Powder Technol. 127 (2002) 128-143
5. Subbarao D. Clusters and lean phase behaviour. Powder Technol. 46 (1986) 101-107
6. Richardson J.F., and Zaki W.N. Sedimentation and fluidization. Trans. Inst. Chem. Eng. 32 (1954) 35-53
7. Matsen J.M. Mechanism of choking and entrainment. Powder Technol. 32 (1982) 21-33
8. Zou B., Li H., Xia Y., and Ma X. Cluster structure in a circulating fluidized bed. Powder Technol. 78 (1994) 173-178
9. Pandey P., Turton R., Yue P., and Shadle L.J. Nonintrusive particle motion studies in the near-wall region of a pilot-scale circulating fluidized bed. I & EC Res. 43 (2004) 5582-5592
10. Guenther C., and Breault R. Wavelet analysis to characterize cluster dynamics in a circulating fluidized bed. Powder Technol. 173 (2007) 163-173
11. Horio, Morishita K., Tachibana O., and Murata N. Solid distribution and movement in circulating fluidized beds. In: Basu P., and Large J.F. (Eds). Circulating Fluidised Bed Technology II (1988), Pergamon, Oxford 147-154
12. Wei F., Yang G., Jin Y., and Yu Z. The characteristics of clusters in a high density circulating fluidized beds. Can. J. Chem. Eng. 73 (1995) 650-655
13. Wei F., Jin Y., and Yu Z. The visualization of macrostructure of the gas solid suspension in a high density CFB. In: Avidan A. (Ed). Circulating Fluidised Bed Technology IV (1993), AIChE, New York 588-593
14. Zheng Y., Zhu J.-X., Marwaha N.S., and Bassi A.S. Radial solids flow structure in a liquid-solids circulating fluidized bed. Chem. Eng. J. 88 (2002) 141-150
15. Davidson J.F., and Harrison D. Fluidised particles (1963), Cambridge University Press, London
16. Pemberton S.T., and Davison J.F. Elutriation from fluidized beds - II disengagement of particles from gas in the free board. Chem. Eng. Sci. 46 (1986) 253-262
17. Subbarao D., and Basu P. A model for heat transfer in circulating fluidized beds. Int. J. Heat Mass Transfer 29 3 (1986) 487-489
18. Gupta A., and Subbarao D. A model for the performance of FCC riser reactor, effect of feed atomisation. Chem. Eng. Sci. 56 (2001) 4489-4503
19. Subbarao D., and Gambhir S. Gas to Particle Mass Transfer in Risers, 7th ICCFB,Canada (2002)
20. Subbarao D. A model for gas to particle mass transfer in risers. AIChE Annual Meeting and Fall Showcase, Cincinnati, USA, Conference Proceedings (2005) 2889-2896
21. Subbarao D. A Cluster Model for Mass Transfer in Risers. J. Eng. Sci. Technol. vol. 3 No.2 (2008) 131-138
22. Breault R.W., and Guenther C.P. Mass transfer in the core-annular and fast fluidization flow regimes of a CFB. Powder Technol. 190 (2009) 385-389