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Experimental analysis of gas hold-up for gas-liquid system agitated in a vessel equipped with two impellers and vertical tubular baffles

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Języki publikacji
EN
Abstrakty
EN
The influence of impellers system and type of liquid on the gas hold-up in the vessel has been presented in this paper. The analysis of gas hold-up was conducted on the basis of the data obtained in the vessel of the diameter D = 0.288 m, where the vessel was filled by a liquid up to the height H = 2D. The vessel was equipped in 24 vertical tubular baffles located on the circuit and two high-speed impellers situated on a shaft. Five different configurations of high-speed impellers were employed. The experiments in the gas-liquid system were conducted for setups which differed in capability of gas bubbles coalescence. The results of the experiment of the gas holdup for the five impellers configurations and four gas-liquid systems were presented in the graphic form and they were described mathematically.
Rocznik
Strony
7--12
Opis fizyczny
Bibliogr. 27 poz., rys., tab.
Twórcy
  • West Pomeranian University of Technology, Szczecin, Faculty of Technology and Chemical Engineering, al. Piastów 42, 71-065 Szczecin, Poland
autor
  • West Pomeranian University of Technology, Szczecin, Faculty of Technology and Chemical Engineering, al. Piastów 42, 71-065 Szczecin, Poland
Bibliografia
  • 1. John, A.H., Bujalski, W. & Nienow, A.W. (1997). A novel reactor with independently-driven dual impellers for gas-liquid processing. Recents Progr. Genie Proced. 11, 5, 169–176.
  • 2. Bouaifi, M., Hebrard, G., Bastoul, D. & Roustan, M. (2001). A comparative study of gas hold-up, bubble size, interfacial area and mass transfer coefficients in stirred gas-liquid reactors and bubble columns. Chem. Eng. Proc., 40, 97–111. DOI: 10.1016/S0255-2701(00)00129-X.
  • 3. Majirova, H., Pinelli, D., Machon, Y. & Magelli, F. (2003). Gas flow behavior in a two-phase sparged reactor stirred with multiple turbines. 11th European Conference on Mixing, 14–17 October 2003 (pp. 245–252), Bamberg.
  • 4. Moucha, T., Linek, V. & Prokopova, E. (2003). Gas hold-up, mixing time and gas-liquid volumetric mass transfer coefficient of various multiple-impeller configurations: Rushton turbine, pitched blade and techmix impeller and their combinations. Chem. Eng. Sci., 58, 1839–1846. DOI: 10.1016/S0009-2509(02)00682-6.
  • 5. Pinelli, D., Bakker, A., Myers, K.J., Reeder, M.F., Fasano, J. & Magelli, F. (2003). Some features of a novel gas dispersion impeller in a dual-impeller configuration. Trans IChemE, 81, 448–454.
  • 6. Karcz, J., Siciarz, R. & Bielka, I. (2004). Gas hold-up in a reactor with dual system of impellers. Chem. Pap., 58(6), 404–409.
  • 7. Fujasova, M., Linek, V., Moucha, T. & Prokopova, E. (2004). Energy demands of different types in gas-liquid dispersions. Sep. Purif. Technol. 39, 123–131. DOI: 10.1016/j.seppur.2003.12.015.
  • 8. Shewale, S.D. & Pandit, A.B. (2006). Studies in multiple impeller agitated gas-liquid contactors. Chem. Eng. Sci., 61, 489–504. DOI: 10.1016/j.ces.2005.04.078.
  • 9. Bao, Y., Yang, J., Chen, L. & Gao, Z. (2012). Influence of the top impeller diameter on the gas dispersion in a sparged multi-impeller stirred tank. Ind. Eng. Chem. Res., 51, 12411– –12420. DOI: 10.1021/ie301150b.
  • 10. Bao, Y., Wang, B., Lin, M., Gao, Z. & Yang, J. (2015). Influence of impeller diameter on overall gas dispersion properties in a sparged multi-impeller stirred tank. Chin. J. Chem. Engineer. 23, 890–896. DOI: 10.1016/j.cjche.2014.11.030.
  • 11. Cudak, M., Kiełbus-Rąpała, A., Major-Godlewska, M. & Karcz, J. (2016). Influence of different factors on momentum transfer in mechanically agitated multiphase systems. Chem. Process. Eng. 37(1), 41–53. DOI: 10.1515/cpe-2016-0005.
  • 12. Cabaret, F., Fradette, L. & Tanguy, P.A. (2008). Gas-liquid mass transfer in unbaffled dual-impeller mixers. Chem. Eng. Sci., 63, 1636–1647. DOI: 10.1016/j.ces.2007.11.028.
  • 13. Babalona, E., Bahouma, D., Tagia, S., Pantouflas, E. & Markopoulos, J. (2005). Power consumption in dual impeller gas-liquid contactors: impeller spacing, gas flow rate, and viscosity effects. Chem. Eng. Technol. 28(7), 802–806. DOI: 10.1002/ceat.200407160.
  • 14. Bouaifi, M. & Rouston, M. (2001). Power consumption, mixing time and homogenisation energy in dual-impeller agitated gas-liquid reactors. Chem. Eng. Process. 40, 87–95. DOI: 10.1016/S0255-2701(00)00128-8.
  • 15. Xie M., Xia J., Zhou Z., Chu J., Zhuang Y. & Zhang S. (2014). Flow pattern, mixing, gas hold-up and mass transfer coefficient of triple-impeller configurations in stirred tank bioreactors. Ind. Eng. Chem. Res., 53, 5941–5953.
  • 16. Major-Godlewska, M. & Karcz, J. (2003). Gas hold-up and power consumption for gas-liquid system agitated in a stirred tank equipped with vertical coil. Chem. Pap., 57(6) 432–437.
  • 17. Major-Godlewska, M. & Karcz, J. (2011). Process characteristics for a gas-liquid system agitated in a vessel equipped with a turbine impeller and tubular baffles. Chem. Pap., 65(2), 132–138. DOI: 10.2478/s11696-010-0080-0.
  • 18. Machoň, V., Vlček, J. & Kudrna, V. (1978). Gas hold-up in agitated aqueous solutions of strong inorganic salts. Coll. Czech. Chem. Commun. 43, 593–603. dx.doi.org/10.1135/cccc19780593.
  • 19. Lee, J.C. & Meyrick, D.L. (1970). Gas-liquid interfacial areas in salt solutions in an agitated tank. Trans. Inst. Chem. Eng. 48, 37–45.
  • 20. Cudak, M. (2014). Hydrodynamic characteristics of mechanically agitated air-aqueous sucrose solutions., Chem. Process. Eng. 35(1), 97–107. DOI: 10.2478/cpe-2014-0007.
  • 21. Havas, G., Deak, A. & Sawinsky, J. (1982). Heat transfer coefficients in an agitated vessels using vertical tube baffles. Chem. Eng. J. 28, 161–165.
  • 22. Man, K.L., Hughes, W. & Moody, G.W. (1991). The effect of rheology and baffle design on the power and heat transfer performance in stirred vessels using vertical tubular baffles. 7th European Congress on Mixing, 18–20 september 1991 (pp. 321–332). Brugge, Belgium.
  • 23. Karcz, J. & Major, M. (2001). Experimental studies of heat transfer in an agitated vessel equipped with vertical tubular coil. Inż. Chem. Proc. 22, 445–459.
  • 24. Karcz, J. & Major, M. (2001). Badania wymiany ciepła w mieszalniku z wężownicą pionową. Inż. Chem. i Proc., 22, 3C, 639–644.
  • 25. Kiełbus-Rąpała, A. & Karcz, J. (2012). Experimental analysis of the hydrodynamics of a three-phase system in a vessel with two impellers. Chem. Pap., 66(6), 574–582. DOI: 10.2478/s11696-012-0157-z.
  • 26. Kembłowski, Z. (1973). Reometria płynów nieniutonowskich, WNT, Warszawa.
  • 27. Adamiak, R. (2005). Experimental studies of conditions for gas dispersion in liquid in the stirred tank on different scale. PhD Thesis, Politechnika Szczecińska, Szczecin (in Polish).
Uwagi
Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-d62a5031-0979-4160-ac78-21bc67a36040
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