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Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received November 21, 2012
Accepted February 24, 2013

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Prediction of bed pressure drop and top packed bed formation in gas-liquid-solid semi-fluidized bed with irregular homogeneous binary mixtures

Deepak Kumar Samal^† Yashobanta Kumar Mohanty Gopendra Kishore Roy

Department of Chemical Engineering, Gandhi Institute of Engineering and Technology (GIET), Gunupur, Rayagada, Odisha-765022, India

deepakkumarsamal@rediffmail.com

Korean Journal of Chemical Engineering, June 2013, 30(6), 1326-1334(9), 10.1007/s11814-013-0030-y

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Abstract

We studied the hydrodynamics of a gas-liquid-solid semi-fluidized bed relating to packed bed formation and bed pressure drop with irregular homogeneous binary mixtures in a 0.05 m internal diameter Perspex column, with water and air (secondary) as fluidizing medium at constant static bed height of 0.08 m. A homogeneous binary mixture has been taken for easy formation of a semi-fluidized bed. Air is supplied centrally below the bottom grid in radial direction with a special design air sparger after the bed is first fluidized by the liquid. Experimental parameters studied included superficial gas and liquid velocities, average particle size and density and the bed expansion ratio. Empirical and semi-empirical models were developed. The calculated values from predicted models were compared with the experimental values and fairly good agreement was obtained.

Keywords

Gas-liquid-solid Semi-fluidization Irregular Homogeneous Binary Mixtures Bed Pressure Drop Top Packed Bed Formation Dimensional and Statistical Analyses

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