Hydrodynamic characteristics of dual-impeller configurations in a multiple-phase stirred tank

Industrial and Engineering Chemistry Research

Volumn 49, Issue 3, 2010, Pages 1001-1009

  Wang, Tao ^a   Yu, Gengzhi ^a   Yong, Yumei ^a   Yang, Chao ^a,b   Mao, Zai Sha ^a  

^a INSTITUTE OF PROCESS ENGINEERING   (China)

^b Jiangsu Institute of Marine Resource Exploitation   (China)

Author keywords

[No Author keywords available]

Indexed keywords

DOWNFLOW; GAS FLOWRATE; GAS LIQUIDS; GAS-LIQUID-SOLID; HYDRODYNAMIC CHARACTERISTICS; LIQUID-SOLID SYSTEM; MIXING TIME; PHASE SYSTEMS; PITCHED BLADE TURBINE; POWER INPUT; RADIAL IMPELLER; SOLID CONCENTRATIONS; SOLID PARTICLES; SOLID SUSPENSIONS; STIRRED TANK;

COMPUTATIONAL FLUID DYNAMICS; ELECTRIC CONDUCTIVITY OF SOLIDS; FLOW PATTERNS; LIQUIDS; MINING; REYNOLDS NUMBER; TANKS (CONTAINERS); TURBINES; TURBOMACHINE BLADES;

SUSPENSIONS (FLUIDS);

EID: 76049096541     PISSN: 08885885     EISSN: None     Source Type: Journal    
DOI: 10.1021/ie9006886     Document Type: Conference Paper

References (40)

1. Gogate, P. R.; Beenackers, A. A. C. M.; Pandit, A. B. Multipleimpeller systems with a special emphasis on bioreactors: a critical review. Biochem. Eng. J. 2000, 6, 109-144.
2. Chen, D. F.; Xu, L. X.; Chen, G. T.; Rong, S. X. Characteristics of solid particles suspension in mechanically agitated vessels. Chem. React. Eng. Technol. 1992, 8, 44-53.
3. Nienow, A. W.; Konno, M.; Bujalski, W. Studies on three-phase mixing: a review and recent results. Chem. Eng. Res. Des. 1986, 64, 35- 42.
4. Nienow, A. W.; Bujalski, W. Recent studies on agitated three phase (gas-liquid-solid) systems in the turbulent regime. Chem. Eng. Res. Des. 2002, 80, 832-838.
5. Kasat, G. R.; Pandit, A. B. Review on mixing characteristics in solidliquid and solid-liquid-gas reactor vessels. Can. J. Chem. Eng. 2005, 83, 618-643.
6. Conway, K.; Kyle, A.; Rielly, C. D. Gas-liquid-solid operation of a vortex-ingesting stirred tank reactor. Chem. Eng. Res. Des. 2002, 80, 839- 845.
7. Li, X. Y.; Yu, G. Z.; Mao, Z.-S. Gas dispersion and gas-liquid mass transfer in surface aerated stirred tanks with gas sparging. Chem. Eng. 2007, 35, 30-51.
8. Armenante, P. M.; Chang, G. M. Power consumption in agitated vessels provided with multiple-disk turbines. Ind. Eng. Chem. Res. 1998, 37, 284-291.
9. Dohi, N.; Matsuda, Y.; Shimizu, K.; Minekawa, K.; Kawase, Y. An experimental investigation into vapor dispersion and solid suspension in boiling stirred tank reactors. Chem. Eng. Process. 2002, 41, 267-279.
10. Kuzmanic, N.; Zanetic, R.; Akrap, M. Impact of floating suspended solids on the homogenisation of the liquid phase in dual-impeller agitated vessel. Chem. Eng. Process. 2008, 47, 663-669.
11. Zhu, H.; Nienow, A. W.; Bujalski, W.; Simmons, M. J. H. Mixing studies in a model aerated bioreactor equipped with an up- or a down-pumping 'Elephant Ear' agitator: Power, hold-up and aerated flow field measurements. Chem. Eng. Res. Des. 2009, 87, 307-317.
12. Dohi, N.; Takahashi, T.; Minekawa, K.; Kawase, Y. Power consumption and solid suspension performance of large-scale impellers in gas-liquid-solid three-phase stirred reactors. Chem. Eng. J. 2004, 97, 103- 114.
13. Pour, S. B.; Fradette, L.; Tanguy, P. A. Laminar and slurry blending characteristics of a dual shaft impeller system. Chem. Eng. Res. Des. 2007, 85, 1305-1313.
14. Rudolph, L.; Schafer, M.; Atiemo-Obeng, V.; Kraume, M. Experimental and numerical analysis of power consumption for mixing of high viscosity fluids with a co-axial mixer. Chem. Eng. Res. Des. 2007, 85, 568- 575.
15. Manna, L. Comparison between physical and chemical methods for the measurement of mixing times. Chem. Eng. J. 1997, 67, 167-173.
16. Bouaifi, M.; Roustan, M. Power consumption, mixing time and homogenisation energy in dual-impeller agitated gas-liquid reactors. Chem. Eng. Process. 2001, 40, 87-95.
17. Kraume, M. Mixing times in stirred suspensions. Chem. Eng. Technol. 1992, 15, 313-318.
18. Hari-Prajitno, D.; Mishra, V. P.; Takenaka, K.; Bujalski, W.; Nienow, A. W.; Mckemmie, J. Gas-Liquid Mixing Studies with Multiple Up- and Down- Pumping Hydrofoil Impellers: Power Characteristics and Mixing Time. Can. J. Chem. Eng. 1998, 76, 1056-1068.
19. Jafari, M.; Mohammadzadeh, J. S. S. Mixing time, homogenization energy and residence time distribution in a gas-induced contactor. Chem. Eng. Res. Des. 2005, 83, 452-459.
20. Zhao, D.; Gao, Z.; Muller-Steinhagen, H.; Smith, J. M. Liquid- Phase mixing times in sparged and boiling agitated reactors with high gas loading. Ind. Eng. Chem. Res. 2001, 40, 1482-1487.
21. Rieger, F. Effect of particle content on agitator speed for off-bottom suspension. Chem. Eng. J. 2000, 79, 171-175.
22. Wu, J.; Zhu, Y.; Bandopadhayay, P. C.; Pullum, L.; Shepherd, I. C. Solids Suspension with Axial-Flow Impellers. AIChE J. 2000, 46, 647- 650.
23. Zhu, Y. G.; Wu, J. Critical impeller speed for suspending solids in aerated agitation tanks. Can. J. Chem. Eng. 2002, 80, 682-687.
24. Xu, S.; Ren, W.; Zhao, X. Critical rotational speed for a floating particles suspension in an aerated vessel. Chem. Eng. Technol. 2001, 24, 189-194.
25. Panneerselvam, R.; Savithri, S.; Surender, G. D. Computational fluid dynamics simulation of solid suspension in a gas-liquid-solid mechanically agitated contactor. Ind. Eng. Chem. Res. 2009, 48, 1608-1620.
26. Murthy, B. N.; Ghadge, R. S.; Joshi, J. B. CFD simulations of gas-liquid- solid stirred reactor: prediction of critical impeller speed for solid suspension. Chem. Eng. Sci. 2007, 62, 7184-7195.
27. Angst, R.; Kraume, M. Experimental investigations of stirred solid/liquid systems in three different scales: Particle distribution and power consumption. Chem. Eng. Sci. 2006, 61, 2864-2870.
28. Shan, X. G.; Yu, G. Z.; Yang, C.; Mao, Z.-S.; Zhang, W. G. Numerical Simulation of Liquid-Solid Flow in an Unbaffled Stirred Tank with a Pitched-Blade Turbine Downflow. Ind. Eng. Chem. Res. 2008, 47, 2926-2940.
29. Shan, X. G.; Yu, G. Z.; Yang, C.; Mao, Z.-S. Solid Holdup Distribution of Solid-Liquid Suspension in an Unbaffled Stirred Tank. Chin. J. Process Eng. 2008, 8, 1-7.
30. Zhang, H.; Johnston, P. M.; Zhu, J. X.; de Lasa, H. I.; Bergougnou, M. A. A novel calibration procedure for a fiber optic solids concentration probe. Powder Technol. 1998, 100, 260-272.
31. Gonzalez, R.; Gentina, J. C.; Acevedo, F. Optimisation of the solids suspension conditions in a continuous stirred tank reactor for the biooxidation of refractory gold concentrates. Electr. J. Biotechnol. 2003, 6, 233- 243.
32. Micale, G.; Carrara, V.; Grisafi, F.; Brucato, A. Solids suspension in three-phase stirred tanks. Chem. Eng. Res. Des. 2000, 78, 319-326.
33. Micale, G.; Grisafi, F.; Brucato, A. Assessment of particle suspension conditions in stirred vessels by means of pressure gauge technique. Chem. Eng. Res. Des. 2002, 80, 893-902.
34. Kasat, G. R.; Khopkar, A. R.; Ranade, V. V.; Pandit, A. B. CFD simulation of liquid-phase mixing in solid-liquid stirred reactor. Chem. Eng. Sci. 2008, 63, 3877-3885.
35. Montante, G.; Bourne, J. R.; Magelli, F. Scale-up of solids distribution in slurry, stirred vessels based on turbulence intermittency. Ind. Eng. Chem. Res. 2008, 47, 3438-3443.
36. Chapple, D.; Kresta, S. M.; Wall, A.; Afacan, A. The effect of impeller and tank geometry on power number for a pitched blade turbine. Chem. Eng. Res. Des. 2002, 80, 364-372.
37. Khazam, O.; Kresta, S. M. A novel geometry for solids drawdown in stirred tanks. Chem. Eng. Res. Des. 2009, 87, 280-290.
38. Murthy, G. G. K.; Elliott, J. F. Definition and Determination of Mixing Time in Gas Agitated Liquid Baths. ISIJ Int. 1992, 32, 190-195.
39. Wang, T.; Yu, G. Z.; Yong, Y. M.; Yang, C.; Mao, Z.-S.; Qiu, Z. H. Performance of a new type of impeller in multiphase system. 5th National Chemical and Biochemical Engineering Annual Meeting, Xi'an, China, October 28-30, 2008.
40. Panneerselvam, R.; Savithri, S.; Surender, G. D. CFD modelling of gas-liquid-solid mechanically agitated contactor. Chem. Eng. Res. Des. 2008, 86, 1331-1344.