Powder entrapment in a multi-phase flow packed bed

D. Pinson, A. B. Yu, P. Zulli, M. J. McCarthy

Research output: Contribution to conferencePaperOther

Abstract

Multiphase-phase flow in packed beds can be found in many industrial applications, for example, granular filters for (hot) gas cleaning and the flow of unburnt coal in an ironmaking blast furnace. Understanding the mechanisms governing powder entrapment in packed beds and relevant issues such as powder holdup and bed permeability is an important step towards the modelling of such a flow system. This paper presents a study of powder entrapment and its effect on gas pressure drop in a gas-powder two-phase flow bed with and without liquid holdup. It is found that the contact point between particles plays an important role in the capture of powder and the presence of a liquid phase in the packing may significantly increase the powder holdup and gas pressure drop. The effects of variables relevant to blast furnace conditions, such as gas flowrate, powder flowrate, liquid properties, and powder-particle size ratio on the entrapment behaviour are experimentally examined.

Original languageEnglish
Pages257-267
Number of pages11
Publication statusPublished - 1 Dec 1997
Externally publishedYes
EventProceedings of the 1997 TMS Annual Meeting - Orlando, FL, USA
Duration: 9 Feb 199713 Feb 1997

Conference

ConferenceProceedings of the 1997 TMS Annual Meeting
CityOrlando, FL, USA
Period9/02/9713/02/97

Cite this

Pinson, D., Yu, A. B., Zulli, P., & McCarthy, M. J. (1997). Powder entrapment in a multi-phase flow packed bed. 257-267. Paper presented at Proceedings of the 1997 TMS Annual Meeting, Orlando, FL, USA, .
Pinson, D. ; Yu, A. B. ; Zulli, P. ; McCarthy, M. J. / Powder entrapment in a multi-phase flow packed bed. Paper presented at Proceedings of the 1997 TMS Annual Meeting, Orlando, FL, USA, .11 p.
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year = "1997",
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Pinson, D, Yu, AB, Zulli, P & McCarthy, MJ 1997, 'Powder entrapment in a multi-phase flow packed bed' Paper presented at Proceedings of the 1997 TMS Annual Meeting, Orlando, FL, USA, 9/02/97 - 13/02/97, pp. 257-267.

Powder entrapment in a multi-phase flow packed bed. / Pinson, D.; Yu, A. B.; Zulli, P.; McCarthy, M. J.

1997. 257-267 Paper presented at Proceedings of the 1997 TMS Annual Meeting, Orlando, FL, USA, .

Research output: Contribution to conferencePaperOther

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AB - Multiphase-phase flow in packed beds can be found in many industrial applications, for example, granular filters for (hot) gas cleaning and the flow of unburnt coal in an ironmaking blast furnace. Understanding the mechanisms governing powder entrapment in packed beds and relevant issues such as powder holdup and bed permeability is an important step towards the modelling of such a flow system. This paper presents a study of powder entrapment and its effect on gas pressure drop in a gas-powder two-phase flow bed with and without liquid holdup. It is found that the contact point between particles plays an important role in the capture of powder and the presence of a liquid phase in the packing may significantly increase the powder holdup and gas pressure drop. The effects of variables relevant to blast furnace conditions, such as gas flowrate, powder flowrate, liquid properties, and powder-particle size ratio on the entrapment behaviour are experimentally examined.

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Pinson D, Yu AB, Zulli P, McCarthy MJ. Powder entrapment in a multi-phase flow packed bed. 1997. Paper presented at Proceedings of the 1997 TMS Annual Meeting, Orlando, FL, USA, .