Indian Journal of Chemical Technology

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Gas Hold-up, Pressure Drop and Flow Regime Study in Semi-Batch PSRBC Bubble Column


Affiliations
1 Department of Mechanical Engineering, GIET University Gunupur, Rayagada, Odisha- 765022, India
2 Department of Chemical Engineering, Haldia Institute of Technology, Haldia, West Bengal-721 657, India

The present investigation is aimed to give a new dimension to the bubble column hydrodynamic study such as gas hold-up, flow regime and total pressure-drop. Pressure swing rotating bubble cap (PSRBC) sparger is used for this purpose, which has a unique feature of self-rotating ability. Compressed air is supplied through the PSRBC sparger into the column of stationary water. Flow regime and gas hold-up of bubble column have been studied with various superficial air flow rates. Empirical and semi-empirical models have been developed for predicting gas hold-up, pressure drop and RPM for the PSRBC sparger bubble column in the present range of investigation. The calculated values from predicted models have been compared with the experimental values and the coefficients of correlations are found to be more than 0.97. The present hydrodynamic study on gas hold-up, pressure drop, flow regime and RPM may be found useful for the gas-liquid systems, where the gas phase is dispersed in liquid through bubbling manner.

Keywords

Flow regime, Gas hold-up, Hydrodynamics, Pressure swing rotating bubble cap (PSRBC), Sparger
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  • Gas Hold-up, Pressure Drop and Flow Regime Study in Semi-Batch PSRBC Bubble Column

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Authors

Shakti Prasanna Khadanga
Department of Mechanical Engineering, GIET University Gunupur, Rayagada, Odisha- 765022, India
Deepak Kumar Samal
Department of Chemical Engineering, Haldia Institute of Technology, Haldia, West Bengal-721 657, India
Prabina Kumar Patnaik
Department of Mechanical Engineering, GIET University Gunupur, Rayagada, Odisha- 765022, India
Gopendra Kishore Roy
Department of Mechanical Engineering, GIET University Gunupur, Rayagada, Odisha- 765022, India

Abstract


The present investigation is aimed to give a new dimension to the bubble column hydrodynamic study such as gas hold-up, flow regime and total pressure-drop. Pressure swing rotating bubble cap (PSRBC) sparger is used for this purpose, which has a unique feature of self-rotating ability. Compressed air is supplied through the PSRBC sparger into the column of stationary water. Flow regime and gas hold-up of bubble column have been studied with various superficial air flow rates. Empirical and semi-empirical models have been developed for predicting gas hold-up, pressure drop and RPM for the PSRBC sparger bubble column in the present range of investigation. The calculated values from predicted models have been compared with the experimental values and the coefficients of correlations are found to be more than 0.97. The present hydrodynamic study on gas hold-up, pressure drop, flow regime and RPM may be found useful for the gas-liquid systems, where the gas phase is dispersed in liquid through bubbling manner.

Keywords


Flow regime, Gas hold-up, Hydrodynamics, Pressure swing rotating bubble cap (PSRBC), Sparger