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Cold model study of local liquid holdup in the dropping zone using x-ray

Gupta, Govind S and Naveen, K (2006) Cold model study of local liquid holdup in the dropping zone using x-ray. In: International Conference on Advances in Materials and Materials Processing ICAMMP 2006, 2006, India.

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It is important to know and to quantify the liquid holdups both dynamic and static at local levels as it will lead to understand various blast furnace phenomena properly such as slag/metal.gas.solid reactions, gas flow behaviour and interfacial area between the gas/solid/liquid. In the present study, considering the importance of local liquid holdup and non-availability of holdup data in these systems, an attempt has been made to quantify the local holdups in the dropping and around raceway zones in a cold model study using a non-wetting packing for liquid. In order to quantify the liquid holdups at microscopic level, a previously developed technique, X-ray radiography, has been used. It is observed that the liquid flows in preferred paths or channels which carry droplets/rivulets. It has been found that local holdup in some regions of the packed bed is much higher than average at a particular flow rate and this can have important consequences for the correct modelling of such systems.

Item Type: Conference Paper
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited: 22 Nov 2011 04:58
Last Modified: 22 Nov 2011 04:58
URI: http://eprints.iisc.ernet.in/id/eprint/42331

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