Frontiers of Chemical Science and Engineering >
CFD simulation of the hydrodynamics in an internal air-lift reactor with two different configurations
Received date: 26 Apr 2011
Accepted date: 18 Aug 2011
Published date: 05 Dec 2011
Copyright
Computational fluid dynamics (CFD) was used to investigate the hydrodynamic parameters of two internal airlift bioreactors with different configurations. Both had a riser diameter of 0.1 m. The model was used to predict the effect of the reactor geometry on the reactor hydrodynamics. Water was utilized as the continuous phase and air in the form of bubbles was applied as the dispersed phase. A two-phase flow model provided by the bubbly flow application mode was employed in this project. In the liquid phase, the turbulence can be described using the k-ϵ model. Simulated gas holdup and liquid circulation velocity results were compared with experimental data. The predictions of the simulation are in good agreement with the experimental data.
Mona EBRAHIMIFAKHAR , Elmira MOHSENZADEH , Sadegh MORADI , Mostafa MORAVEJI , Mahmoud SALIMI . CFD simulation of the hydrodynamics in an internal air-lift reactor with two different configurations[J]. Frontiers of Chemical Science and Engineering, 2011 , 5(4) : 455 -462 . DOI: 10.1007/s11705-011-1116-x
| 1 |
Blenke H. Loop reactors. Advances in Biochemical Engineering, 1979, 13: 121–214
|
| 2 |
Chisti M Y. Airlift Bioreactors. London and New York: Elsevier Applied Science, 1989
|
| 3 |
Sáez A E, Marquez M A, Roberts G W, Carbonell R G. Hydrodynamic model for gas-lift reactors. AIChE Journal. American Institute of Chemical Engineers, 1998, 44(6): 1413–1423
|
| 4 |
Joshi J B, Ranade V V, Gharat S D, Lele S S. Sparged loop reactors. The Canadian Journal of Chemical Engineering, 1990, 68(5): 705–741
|
| 5 |
Merchuk J C, Stein Y. Local holdup and liquid velocity in air-lift reactors. AIChE Journal. American Institute of Chemical Engineers, 1981, 27(3): 377–388
|
| 6 |
Siegel M H, Robinson C W. Applications of airlift gas-liquid-solid reactors in biotechnology. Chemical Engineering Science, 1992, 47(13-14): 3215–3229
|
| 7 |
Chisti M Y, Moo-Young M. Air-lift reactors: characteristic applications and design considerations. Chemical Engineering Communications, 1987, 60(1): 195–242
|
| 8 |
van Baten J M, Ellenberger J, Krishna R. Hydrodynamics of internal air lift reactors: experiments versus CFD simulations. Chemical Engineering and Processing, 2003, 42(10): 733–742
|
| 9 |
Pironti F F, Medina V R, Calvo R, Saez A E. Effect of draft tube position on the hydrodynamics of a draft tube slurry bubble column. The Chemical Engineering Journal and the Biochemical Engineering Journal, 1995, 60(1-3): 155–160
|
| 10 |
Koide K, Kurematsu K, Iwamoto S, Iwata Y, Horibe K. Gas holdup and volumetric liquid-phase mass transfer coefficient in bubble column with draught tube and with gas dispersion into tube. Journal of Chemical Engineering of Japan, 1983, 16(5): 413–419
|
| 11 |
Hwang S J, Fan L S. Some design considerations of a draft tube gas-liquid-solid spouted bed. The Chemical Engineering Journal, 1986, 33(1): 49–56
|
| 12 |
Wachi S, Jones A G, Elson T P. Flow dynamics in a draft tube bubble column using various Liquids. Chemical Engineering Science, 1991, 46(2): 657–663
|
| 13 |
Hekmat A, Amooghin A E, Moraveji M K. CFD simulation of gas-liquid flow behavior in an airlift reactor: determination of the optimum distance of the draft tube. Simulation Modelling Practice and Theory, 2010, 18(7): 927–945
|
| 14 |
Romkes S J P, Dautzenberg F M, van den Bleek C M, Calis H P A. CFD modeling and experimental validation of particle-to-fluid mass and heat transfer in a packed bed at very low channel to particle diameter ratio. Chemical Engineering Journal, 2003, 96(1-3): 3–13
|
| 15 |
Jafari A, Zamankhan P, Mousavi S M, Pietarinen K. Modeling and CFD simulation of flow behavior and dispersivity through randomly packed bed reactors. Chemical Engineering Journal, 2008, 144(3): 476–482
|
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