Paper Title
Effect of internals and sparger design on mixing behavior in sectionalized bubble column
Keywords
- Internals Effect
- Sparger Design
- Mixing Behavior
- Sectionalized Bubble Column
- Mixing Time (θmix)
- Fractional Gas Hold-Up (ɛG)
- Batch Mode Operation
- Gas-Liquid Phases
- Air-Water System
- Sparger Free Area (% FA)
- Superficial Gas Velocity (VG)
- Liquid Height to Column Diameter (Hc/D)
- Sectionalizing Plate
- One-Dimensional Dispersion Model
- Tracer Concentration Profile
- Longitudinal Dispersion Coefficient (DL)
- Electrolyte Effect
- Tracer Solution (NaCl)
- Intercell Exchange Velocity (uB)
- Correlation Development
Journal
Research Impact Tools
Publication Info
Volume: 112 | Issue: 1-3 | Pages: 117-129
Published On
September, 2005
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Abstract
An experimental study has been carried out to investigate the effect of internals and sparger design on mixing time (θmix) and fractional gas hold-up (ɛG) in a batch mode sectionalized bubble column. Air and water were used as the gas–liquid phases, respectively. In the present work, sparger with the percent free area (% FA) of 0.136 and 0.6% has been used and the superficial gas velocity (VG), liquid height to column diameter (Hc/D), percent free area of the sectionalizing plate was varied from 0.06 to 0.295 m s−1, 3 to 4 and 4 to 23%, respectively. It was found that there is no significant effect of the sparger design on the mixing time but it does strongly depend on VG, Hc/D and % FA of the sectionalizing plate. The one-dimensional dispersion model successfully predicts the tracer concentration profile and the longitudinal dispersion coefficient. Also, the effect of the presence of the electrolyte too has been studied by adding a known volume of the tracer solution (NaCl). Correlations have been developed for the estimation of the fractional gas hold-up, mixing time, longitudinal dispersion coefficient (DL) and the intercell exchange velocity (uB).
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