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http://dx.doi.org/10.9713/kcer.2012.50.3.505

The Effect of Partitioning Porous Plate on Bubble Behavior and Gas Hold-up in a Bench Scale (0.36 m × 22 m) Trayed Bubble Column  

Yang, Jung Hoon (Clean Coal Center, Korea Institute of Energy Research)
Hur, Young Gul (Clean Coal Center, Korea Institute of Energy Research)
Lee, Ho-Tae (Clean Coal Center, Korea Institute of Energy Research)
Yang, Jung-Il (Clean Coal Center, Korea Institute of Energy Research)
Kim, Hak-Joo (Clean Coal Center, Korea Institute of Energy Research)
Chun, Dong Hyun (Clean Coal Center, Korea Institute of Energy Research)
Park, Ji Chan (Clean Coal Center, Korea Institute of Energy Research)
Jung, Heon (Clean Coal Center, Korea Institute of Energy Research)
Publication Information
Korean Chemical Engineering Research / v.50, no.3, 2012 , pp. 505-510 More about this Journal
Abstract
The gas hold-up has a strong relationship with the size distribution and rising velocities of bubbles in a bubble column. Therefore, many previous researchers have studied on the hydrodynamics focusing on the bubble size variation in bubble column. In this study, the bubble behavior was influenced by partitioning porous plates installed at a certain height in a trayed bubble column. The gas hold-up was increased in non-sparging region (H/D > 5) as well as sparging region. We identified the effect of the partitioning porous plate using three trayed bubble columns with different reactor geometries. Furthermore, the bubble break-up frequency and size distribution were observed before and after individual bubbles penetrated through the plate. The arrangement of the plates was also investigated using a 0.15-m-in-diameter bubble column. Based on the result, we applied this design concept to a 0.36-m-in-diameter, 22 m tall trayed bubble column and identified the effect of the partitioning porous plate on the gas hold-up increase.
Keywords
Trayed Bubble Column; Gas Hold-up; Bubble Break-up; Bubble Size Distribution; Scale-up;
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1 Polli, M., Stanislao, M. D., Bagatin, R., Bakr, E. A. and Masi, M., "Bubble Size Distribution in the Sparger Region of Bubble Columns," Chem. Eng. Sci., 57, 197-205(2002).   DOI   ScienceOn
2 Tsuchiya, K. and Nakanishi, O., "Gas Holdup Behavior in a Tall Bubble Column with Perforated Plate Distributors," Chem. Eng. Sci., 47, 3347-3354(1992).   DOI   ScienceOn
3 Thorat, B. N., Shevade, A. V., Bhilegaonkar, K. N., Aglawe, R. H., Veera, U. P., Thakre, S. S., Pandit, A. B., Sawant, S. B. and Joshi, J. B., "Effect of Sparger Design and Height to Diameter Ratio on Fractional Gas Hold-up in Bubble Columns," Chem. Eng. Res. Des., 76, 823-834(1998).   DOI   ScienceOn
4 Thaker, K. and Rao, D. P., "Effects of Gas Redispersion and Liquid Height on Gas-liquid Hydrodynamics in a Multistage Bubble Column," Chem. Eng. Res. Des., 85, 1362-1374(2007).   DOI   ScienceOn
5 Alvare, J. and Al-Dahhan, M. H., "Liquid Phase Mixing in Trayed Bubble Column Reactors," Chem. Eng. Sci., 61, 1819-1835(2006).   DOI   ScienceOn
6 Alvare, J. and Al-Dahhan, M. H., "Gas Holdup in Trayed Bubble Column Reactors," Ind. Eng. Chem. Res., 45, 3320-3326(2006).   DOI   ScienceOn
7 Doshi, Y. K. and Pandit, A. B., "Effect of Internals and Sparger Design on Mixing Behavior in Sectionalized Bubble Column," Chem. Eng. J., 112, 117-129(2005).   DOI   ScienceOn
8 Dreher, A. J. and Krishna, R., "Liquid-phase Backmixing in Bubble Columns, Structured by Introduction of Partition Plates," Cataly. Today, 69, 165-170(2001).   DOI   ScienceOn
9 Letzel, H. M., Schouten, J. C., Krishna, R. and van den Bleek, C. M., "Gas Holdup and Mass Transfer in Bubble Column Reactors Operated at Elevated Pressure," Chem. Eng. Sci., 54, 2237-2246(1999).   DOI   ScienceOn
10 Yang, J. H., Yang, J. I., Kim, H. J., Chun, D. H., Lee, H. T. and Jung, H., "Two Regime Transitions to Pseudo-homogeneous and Heterogeneous Bubble Flow for Various Liquid Viscosities," Chem. Eng. Process., 49, 1044-1050(2010).   DOI   ScienceOn
11 Clift, R., Grace, J. R. and Weber, M. E., "Bubbles, Drops and Particles," Dover publications, New York(1978).