Research Article

Hydrodynamic Studies during Gas-Solid Conveying in a Vertically Upward Converging Riser Tube^‡

Corresponding Author

Tanushree Ghosh

[email protected]

Haldia Institute of Technology, Department of Chemical Engineering, 721657 Haldia, West Bengal, India

Correspondence: Tanushree Ghosh ([email protected]), Department of Chemical Engineering, Haldia Institute of Technology, Haldia, West Bengal, 721657, India.Search for more papers by this author

Jyotiprakas Sarkar,

Jyotiprakas Sarkar

National Institute of Technology, Department of Chemical Engineering, 713209 Durgapur, West Bengal, India

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Anup Kumar Sadhukhan,

Anup Kumar Sadhukhan

National Institute of Technology, Department of Chemical Engineering, 713209 Durgapur, West Bengal, India

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Sanghamitra Barman,

Sanghamitra Barman

Thapar Institute of Engineering and Technology, Department of Chemical Engineering, 147004 Patiala, Punjab, India

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Tanushree Ghosh,

Corresponding Author

Tanushree Ghosh

[email protected]

Haldia Institute of Technology, Department of Chemical Engineering, 721657 Haldia, West Bengal, India

Correspondence: Tanushree Ghosh ([email protected]), Department of Chemical Engineering, Haldia Institute of Technology, Haldia, West Bengal, 721657, India.Search for more papers by this author

Jyotiprakas Sarkar,

Jyotiprakas Sarkar

National Institute of Technology, Department of Chemical Engineering, 713209 Durgapur, West Bengal, India

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Anup Kumar Sadhukhan,

Anup Kumar Sadhukhan

National Institute of Technology, Department of Chemical Engineering, 713209 Durgapur, West Bengal, India

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Sanghamitra Barman,

Sanghamitra Barman

Thapar Institute of Engineering and Technology, Department of Chemical Engineering, 147004 Patiala, Punjab, India

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First published: 14 December 2021

https://doi.org/10.1002/ceat.202100452

^†

Presented at the International Chemical Engineering Conference on “100 Glorious Years of Chemical Engineering & Technology”, Jalandhar, India, September 2021.

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Abstract

Experimental and theoretical investigations on hydrodynamics for gas-solid particles flow were carried out in a vertical upward converging pneumatic conveying system. One-dimensional mathematical modeling and simulation were done using the FORTRAN-95 program. The influence of convergence geometry on the hydrodynamic parameters like particle velocity, gas-particle slip velocity, pressure drop, and particle Reynolds number (Re_p) along the riser were studied. Experiments were conducted using the dilute phase mode with three types of granular cereal seeds of different sizes. Some significant differences in all hydrodynamic parameter profiles along the riser were observed between converging and uniform risers. Enhancement of Re_p in the converging riser implies a higher gas-solid transfer coefficient.

Supporting Information

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