Gas hold-up and bubble diameters in a gassed oscillatory baffled column |
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| Affiliation: | 1. School of Chemical Engineering, Purdue University, West Lafayette, IN 47907, USA;2. Alconbury Weston Ltd, Stoke-on-Trent ST4 3PE, United Kingdom;3. Department of Chemical Engineering, Loughborough University, Loughborough LE11 3TU, United Kingdom;1. School of Chemical Engineering, Sungkyunkwan University (SKKU), 2066 Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do 16419, Republic of Korea;2. Institute of Convergent Chemical Engineering and Technology, Sungkyunkwan University (SKKU), Suwon, Gyeonggi-do 16419, Republic of Korea;3. Center for Convergent Chemical Process, 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea;4. Climate Change Research Division, Korea Institute of Energy Research, 152 Gajeong-ro, Yuseong-gu, Daejeon 34129, Republic of Korea;5. School of Chemical and Biological Engineering, Seoul National University, Seoul 08826, Republic of Korea;1. Department of Mining Engineering, Universidad de Chile, Chile;2. Advanced Mining Technology Center, AMTC, Universidad de Chile, Chile;1. Laboratoire de Physique des Solides, UMR8502–Université Paris Sud, Orsay, France;2. Laboratoire Matière et Système Complexes, UMR7057-Université Paris Diderot, Paris, France;3. Université Pierre et Marie Curie, Paris, France;1. School of Engineering, Newcastle University, Newcastle-upon-Tyne, UK;2. Department of Chemical Engineering, College of Engineering, Tikrit University, Tikrit, Salah and Din, Iraq |
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| Abstract: | In this paper attempts are made to address how bubble behaviour in a batch oscillatory baffled column (OBC) contributes to the overall measured enhancement in mass transfer. A CCD camera is used to measure the bubble size distribution and the gas hold-up in the OBC. The experimental results of Sauter mean diameter and gas hold-up are correlated as a function of the power dissipation and superficial gas velocity, in order to allow for comparisons with published correlations for the mass transfer coefficient. In general, an increase in the oscillatory velocity causes an increase in the hold-up and a decrease in the Sauter mean diameter. Furthermore, we are able to show that the changes in the gas hold-up contribute more than the mean bubble size to the control of the mass transfer coefficient. |
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