Articles & Issues
- Language
- English
- Conflict of Interest
- In relation to this article, we declare that there is no conflict of interest.
- Publication history
-
Received April 8, 2017
Accepted October 15, 2017
-
This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits
unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Copyright © KIChE. All rights reserved.
All issues
Some general aspects of a gas-solid fluidized bed using digital image analysis
School of Chemical Engineering, Iran University of Science and Technology, P. O. Box 16765-163, Tehran, Iran
movahedirad@iust.ac.ir, movahedirad@gmail.com
Korean Journal of Chemical Engineering, February 2018, 35(2), 613-620(8), 10.1007/s11814-017-0291-y
Download PDF
Abstract
Digital image analysis (DIA) was used to achieve some information related to aspect ratio of the bubbles, bed expansion fluctuations and the emulsion area at different gas velocities and different bed heights. All experiments were done in a pseudo-2D gas-solid fluidized bed. Variations of the bubble fraction at different gas velocities and different bed heights were investigated. It was found that when the excess gas velocity increases, the dimensionless bed height increases linearly with slope of about 0.4 for LLDPE particles. To validate the analysis, the bubble diameter achieved by DIA results in this work was compared with the bubble diameter correlation presented by Shen et al. Bubble aspect ratio in different heights of the bed was extracted through image analysis, and it was observed that the bubble aspect ratio first increases with the bed height and near the freeboard becomes flattened. Results of the experiments show that the emulsion phase becomes more expanded at higher excess gas velocities. As demonstrated by the analysis results, by increasing the bed height, bubble fraction parameter is decreased.
References
Kuni Di Levenspiel O, Fluidization Engineering, Elsevier (2013).
Nieuwland J, Veenendaal M, Kuipers J, Van Swaaij W, ChEnS, 51, 4087 (1996)
Olaofe OO, Buist KA, Deen NG, van der Hoef MA, Kuipers JAM, Powder Technol., 244, 61 (2013)
Busciglio A, Vella G, Micale G, Rizzuti L, Chem. Eng. J., 140(1-3), 398 (2008)
Mori S, Wen C, AIChE J., 21, 109 (1975)
Rowe P, Partridge B, Chem. Eng. Res. Des., 75, S116 (1997)
Kuipers J, Prins W, Van Swaaij W, ChEnS, 46, 2881 (1991)
Lim K, Agarwal P, O’neill B, Powder Technol., 60, 159 (1990)
Hull AS, Chen ZM, Fritz JW, Agarwal PK, Powder Technol., 103(3), 230 (1999)
Caicedo GR, Marques JJP, Ruiz MG, Soler JG, Chem. Eng. Process., 42(1), 9 (2003)
Goldschmidt MJV, Link JM, Mellema S, Kuipers JAM, Powder Technol., 138(2-3), 135 (2003)
Shen L, Johnsson F, Leckner B, ChEnS, 59, 2607 (2004)
Laverman JA, Roghair I, Annaland MVS, Kuipers H, CJChE, 86, 523 (2008)
Busciglio A, Vella G, Micale G, Rizzuti L, Chem. Eng. J., 148(1), 145 (2009)
Asegehegn TW, Schreiber M, Krautz HJ, Powder Technol., 210(3), 248 (2011)
Movahedirad S, Dehkordi AM, Banaei M, Deen NG, Annaland MV, Kuipers JAM, Ind. Eng. Chem. Res., 51(18), 6571 (2012)
Movahedirad S, Ghafari M, Dehkordi AM, Chem. Eng. Technol., 37(1), 103 (2014)
Guardiola J, Ramos G, Elvira R, ChEnS, 95, 33 (2013)
Geldart D, Powder Technol., 7, 285 (1973)
Link J, Cuypers L, Deen N, Kuipers J, ChEnS, 60, 3425 (2005)
Schneider CA, Rasband WS, Eliceiri KW, Nat. Methods, 9, 671 (2012)
Ridler T, Calvard S, ITSMC, 8, 630 (1978)
Movahedirad S, Ghafari M, Dehkordi AM, Chem. Eng. Technol., 35(5), 929 (2012)
Movahedirad S, Dehkordi AM, Deen NG, Annaland MV, Kuipers JAM, AIChE J., 58(11), 3306 (2012)
Nieuwland J, Veenendaal M, Kuipers J, Van Swaaij W, ChEnS, 51, 4087 (1996)
Olaofe OO, Buist KA, Deen NG, van der Hoef MA, Kuipers JAM, Powder Technol., 244, 61 (2013)
Busciglio A, Vella G, Micale G, Rizzuti L, Chem. Eng. J., 140(1-3), 398 (2008)
Mori S, Wen C, AIChE J., 21, 109 (1975)
Rowe P, Partridge B, Chem. Eng. Res. Des., 75, S116 (1997)
Kuipers J, Prins W, Van Swaaij W, ChEnS, 46, 2881 (1991)
Lim K, Agarwal P, O’neill B, Powder Technol., 60, 159 (1990)
Hull AS, Chen ZM, Fritz JW, Agarwal PK, Powder Technol., 103(3), 230 (1999)
Caicedo GR, Marques JJP, Ruiz MG, Soler JG, Chem. Eng. Process., 42(1), 9 (2003)
Goldschmidt MJV, Link JM, Mellema S, Kuipers JAM, Powder Technol., 138(2-3), 135 (2003)
Shen L, Johnsson F, Leckner B, ChEnS, 59, 2607 (2004)
Laverman JA, Roghair I, Annaland MVS, Kuipers H, CJChE, 86, 523 (2008)
Busciglio A, Vella G, Micale G, Rizzuti L, Chem. Eng. J., 148(1), 145 (2009)
Asegehegn TW, Schreiber M, Krautz HJ, Powder Technol., 210(3), 248 (2011)
Movahedirad S, Dehkordi AM, Banaei M, Deen NG, Annaland MV, Kuipers JAM, Ind. Eng. Chem. Res., 51(18), 6571 (2012)
Movahedirad S, Ghafari M, Dehkordi AM, Chem. Eng. Technol., 37(1), 103 (2014)
Guardiola J, Ramos G, Elvira R, ChEnS, 95, 33 (2013)
Geldart D, Powder Technol., 7, 285 (1973)
Link J, Cuypers L, Deen N, Kuipers J, ChEnS, 60, 3425 (2005)
Schneider CA, Rasband WS, Eliceiri KW, Nat. Methods, 9, 671 (2012)
Ridler T, Calvard S, ITSMC, 8, 630 (1978)
Movahedirad S, Ghafari M, Dehkordi AM, Chem. Eng. Technol., 35(5), 929 (2012)
Movahedirad S, Dehkordi AM, Deen NG, Annaland MV, Kuipers JAM, AIChE J., 58(11), 3306 (2012)
