Korean Chemical Engineering Research

The Korean Institute of Chemical Engineers (한국화학공학회)
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Bubble Properties in Bubble Columns with Electrolyte Solutions

전해질용액 기포탑에서 기포특성

  • Yoo, D.J. (Department of Chemical Engineering & Applied Chemistry, Chungnam National University) ;
  • Lim, D.H. (Department of Chemical Engineering & Applied Chemistry, Chungnam National University) ;
  • Jeon, J.S. (Department of Chemical Engineering & Applied Chemistry, Chungnam National University) ;
  • Yang, S.W. (Department of Chemical Engineering & Applied Chemistry, Chungnam National University) ;
  • Kang, Y. (Department of Chemical Engineering & Applied Chemistry, Chungnam National University)
  • 유동준 (충남대학교 응용화학공학과) ;
  • 임대호 (충남대학교 응용화학공학과) ;
  • 전종설 (충남대학교 응용화학공학과) ;
  • 양시우 (충남대학교 응용화학공학과) ;
  • 강용 (충남대학교 응용화학공학과)
  • Received : 2016.03.16
  • Accepted : 2016.04.01
  • Published : 2016.08.01
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Abstract

Bubble properties such as size (chord length) and rising velocity were investigated in a bubble column with electrolyte solutions, of which diameter was 0.152m and 2.5m in height, respectively. The size and rising velocity of bubbles were measured by using the dual electrical resistivity probe method. Effects of gas and liquid velocities and ionic strength of liquid phase on the size and rising velocity of bubbles were determined. The bubble size increased with increasing gas velocity but decreased with increasing liquid velocity or ionic strength of liquid phase. The rising velocity of bubbles increased with increasing gas velocity and decreased with increasing ionic strength of liquid phase, however, it showed a slight maximum value with varying liquid velocity. The size and rising velocity of bubbles were well correlated with operating variables.

직경 0.152 m이고 높이 2.5 m인 전해질용액 기포탑에서 기포의 크기(chord length)와 상승속도 등 기포의 물성에 대해 고찰하였다. 기포의 크기와 상승속도는 이중저항탐침법을 사용하여 측정하였다. 기체와 액체의 유속 그리고 액상의 이온강도가 기포의 크기와 상승속도에 미치는 영향을 결정하였다. 기포의 크기는 기체의 유속이 증가함에 따라 증가하였으나 액체의 유속과 액상의 이온강도가 증가함에 따라서는 감소하였다. 기포의 상승속도는 기체의 유속이 증가함에 따라 증가하고 액상의 이온강도가 증가함에 따라 감소하였으나 액체유속의 변화에 따라서는 약한 최대값을 나타내었다. 기포의 크기와 상승속도는 운전변수들의 상관식으로 잘 나타낼 수 있었다.

Keywords

References

  1. Deckwer, W. D., Bubble column Reactors, John Wiley & Sons, England, 239-267(1992).
  2. Ferreira, A., Pereira, G., Teixeira, J. A. and Rocha, F., "Statistical Tool Combined with Image Analysis to Characterize Hydrodynamics and Mass Transfer in a Bubble Column," Chem. Eng. J., 180, 216-228(2012). https://doi.org/10.1016/j.cej.2011.09.117
  3. Lim, D. H., Park, J. H., Kang, Y. and Jun, K. W., "Structure of Bubble Holdups in a Viscous Slurry Bubble Column with Low Surface Tension Media," Fuel Proce. Technol., 108, 2-7(2013). https://doi.org/10.1016/j.fuproc.2012.06.024
  4. Gan, Z. W., Yu, S. C. M. and Law, A. W. K., "PDA Measurements in a Three-phase Bubble Column," AIChE J., 59, 2286-2307(2013). https://doi.org/10.1002/aic.14041
  5. Lim, D. H., Yoo, D. J. and Kang, Y., "Characteristics of Gas-liquid Mass Transfer and Interfacial Area in a Bubble Column," Korean Chem. Eng. Res., 53, 315-320(2015). https://doi.org/10.9713/kcer.2015.53.3.315
  6. Dudukovic, M. P., Lorrachi, F. and Mill, P. L., "Multi Phase Catalytic Reactors : A Perspective on Current Knowledge and Future Trends," Catalysis Review, 44, 12-246(2002).
  7. Krishna, R. and Sie, S. T., "Design and Scale-up of Fischer-Tropsch Bibble Column Slurry Reactor," Fuel Proce. Technol., 64, 73-105(2000). https://doi.org/10.1016/S0378-3820(99)00128-9
  8. Shin, I. S., Son, S. M., Kim, U. Y., Kang, Y., Kim, S. D. and Jung, H., "Multiple Effects of Operating Variables on Bubble Properties in Three-phase Slurry Bubble Columns," Korean J. Chem. Eng., 26, 587-591(2009). https://doi.org/10.1007/s11814-009-0100-3
  9. Jin, H. R., Lim, D. H., Lim, H., Kang, Y., Jung, H. and Kim, S. D., "Demarcation of Large and Small Bubbles in Viscous Slurry Bubble Columns," I & EC Research, 51, 2062-2069(2012).
  10. Kang, Y., Cho, Y. J., Woo, K. J. and Kim, S. D., "Bubble Properties and Pressure Fluctuations in Pressurized Bubble Columns," Chem. Eng. Sci., 411-419(2000).
  11. Son, S. M., Song, D. S., Lee, C. K., Kang, S. H., Kang, Y. and Kusakabe, K., "Bubbling Behavior in Gas-liquid Countercurrent Bubble Column Bioreactors," J. Chem. Eng. Japan., 37, 990-998(2004). https://doi.org/10.1252/jcej.37.990
  12. Al Taweel, A. M., Idhbeaa, A. O. and Ghanem, A., "Effect of Electrolytes on Interphase Mass Transfer in Microbubble-sparged Airlift Reactors," Chem. Eng. Sci., 100, 474-485(2013). https://doi.org/10.1016/j.ces.2013.06.013
  13. Weissenborn, P. and Pugh, R., "Surface Tension of Aqueous Solutions of Electrolytes : Relationship with Ion Hydration, Oxygen Solubility and Bubble Coalescence," J. Colloid & Interface, 184, 550-563(1996). https://doi.org/10.1006/jcis.1996.0651
  14. Craig, V. S. J., Ninham, B. W. and Pashley, R. M., "The Effect of Electrolytes on Bubble Coalescence in Water," J. Phys. Chem., 97, 10192-10197(1993). https://doi.org/10.1021/j100141a047
  15. Chang, S. K., Kang, Y. and Kim, S. D., "Mass Transfer in Two and Three-phase Fluidized Beds," J. Chem. Eng. Japan, 18, 524-530(1988).
  16. Weissenborn, P. K. and Pugh, R. J., "Surface Tension and Bubble Coalescence Phenomena of Aqueous Solutions of Electrolytes," Langmuir, 11, 1422-1426(1955).
  17. Alves, S. S., Orvalho, S. P. and Vasconcelos, J. M. T., "Effect of Bubble Contamination on Rise Velocity and Mass Transfer," Chem/Eng. Sci., 60, 1-9(2005).