Modelling of void initiation and breaking phenomena in a packed bed

Singh, V and Gupta, GS and Rajneesh, S (2006) Modelling of void initiation and breaking phenomena in a packed bed. In: Ironmaking & Steelmaking, 33 (2). pp. 101-110.

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Abstract

Void breaking and formation in a packed bed are important phenomena in stabilising and optimising the performance of reactors such as the blast furnace, spouted bed and catalytic regenerator. These phenomena have been studied using a mathematical model. The model is based on a previously published force balance approach to predict the cavity size. Limited numbers of experiments, at room temperature, have been carried out in order to compare the experimental results with theory. A good agreement has been found between the experimental and theoretical results. In addition, the predictions have been compared with published data, which give reasonable agreement. The role of various forces (friction, pressure and bed weight) on void initiation and breaking has been investigated. The effect of bed height, particle diameter and density, void fraction, as well as gas flow rate on void formation and breaking has also been studied.

Item Type:	Journal Article
Publication:	Ironmaking & Steelmaking
Publisher:	Institute of Materials, Minerals and Mining
Additional Information:	Copyright of this article belongs to Institute of Materials, Minerals and Mining.
Keywords:	Blast furnace; packed bed; void formation; void breaking; frictional forces.
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	28 Sep 2010 09:55
Last Modified:	28 Sep 2010 09:55
URI:	http://eprints.iisc.ac.in/id/eprint/31707

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