Quantification of powder phase transient accumulation behaviour in gas�powder�liquid flow through a packed bed with the cohesive zone of a blast furnace

Lakshminarasimha, S and Bosco, FSD and Gupta, GS (2024) Quantification of powder phase transient accumulation behaviour in gas�powder�liquid flow through a packed bed with the cohesive zone of a blast furnace. In: Chemical Engineering Research and Design, 202 . pp. 49-59.

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Abstract

Lower regions of industrial reactors, such as blast furnace, are complex multiphase system in which, gas, powder, and liquid flow co-, counter-, and cross-currently. Laboratory-scale experimental models are yet to consider this multiphase transport, even under chemically inert, cold conditions. In the iron-making blast furnace, the presence of fused metal and non-wetting nature of liquid iron towards coke bed challenges the simultaneous transport of gas, powder and liquid. Adverse conditions results in powder accumulation and liquid hold-up which decrease the coke bed's permeability, and consequently, the furnace's productivity. An experimental investigation on the aforementioned system is conducted for various flow conditions. Greater gas pressure drop, increase in raceway size, localized flooding of liquid, and distinct powder accumulation characteristics are observed as phases are introduced into the bed. Exploratory data analysis yields steady-state and transient correlations for powder hold-ups. The validity and functionality of these correlations are demonstrated. © 2023 Institution of Chemical Engineers

Item Type:	Journal Article
Publication:	Chemical Engineering Research and Design
Publisher:	Institution of Chemical Engineers
Additional Information:	The copyright for this article belongs to Institution of Chemical Engineers.
Keywords:	Coke; Gases; Iron; Packed beds; Powder metals; Regression analysis; Wetting, Experimental investigations; Gas liquids; Gas�liquid�powder flow; Liquid powders; Non-wetting; Non-wetting liquid; Powder accumulation; Powder accumulation correlation; Powder Flow; Wetting liquids, Blast furnaces
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	01 Mar 2024 07:23
Last Modified:	01 Mar 2024 07:23
URI:	https://eprints.iisc.ac.in/id/eprint/83924

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