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Investigation of Mass Transfer Coefficient and Gas Hold Up and Bubble Size Distribution in Novel Design of Stirred Tank Reactor

Tushar Satpute, S. T. Patil, S. H. Gharat, S. M. Teli

Abstract


Stirred tanks are commonly used in chemical industries for reaction and separation. Large-scale reactors include many impellers to improve mixing performance. Agitator plays an important role during the gas-liquid contact in two phase flow. And it is very necessary to know for the understanding of any gas-liquid system. So, in this study my motto is to study which parameters affects in the mixing of gas inside the liquid. The parameters which are affecting the rate of mass transfer inside the system are gas holdup, impeller speed. Rate of mass transfer depends upon the gas flow rate and liquid hold up. It also depends on the turbulence which is created during the rotation of impeller and it directly effects the gas-liquid contact. On the other hand for gas-liquid systems, the gas hold-up, mass transfer coefficient, and interfacial area strongly depend on the size, type and clearance between the impellers & superficial velocity. In this work, we are investigating the effect of the impeller speed, superficial gas velocity and top impeller position on gas holdup, interfacial area and mass transfer coefficient. For the multiphase impeller system computed fluid dynamics have been carried out and the model predictions have compared with the experimental data.


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References


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