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Please use this identifier to cite or link to this item: http://hdl.handle.net/2080/631

Title: Prediction of Pressure Drop and Top Packed Bed Height in Three-Phase Semi-fluidized Bed with Cylindrical Particles
Authors: Simon, A P
Thakur, C
Moghekar, D M
Jena, H M
Keywords: three phase semi-fluidization
pressure drop
minimum semi-fluidization velocity
bed expansion
phase holdup
Issue Date: 2006
Publisher: SCHEMCON
Citation: Student Indian Chemical Engineering Congress-2006 (SCHEMCON-2006), JNTU College of Engineering, Anathapur, AP
Abstract: The phenomenon of semi-fluidization can be visualized as a combination of fluidized bed at the bottom and a fixed bed at the top. Such a reactor bed can be used in the bio-oxidation process for wastewater treatment in which various low-moderate density solid particles of different shape and size can be used as cell support. Ceramic raschig ring possess moderate density and high surface area due to its hollow cylindrical structure, thus can be used as solid support for microorganisms, where higher mass transfer rate can be achieved. In this study the hydrodynamic characteristics viz. the pressure drop, formation of top packed bed and phase hold up of a co-current gas-liquid-solid three-phase semi-fluidized bed are studied using liquid as the continuous phase and gas as the discontinuous phase. These have been done in order to develop a good understanding of each flow regime in gas-liquid and liquid-solid semi-fluidization. Air, water and ceramic raschig rings are used as the gas, liqui...
Description: Copyright for the paper belongs to SCHEMCON
URI: http://hdl.handle.net/2080/631
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