Solids deposition in low-velocity slug flow pneumatic conveying

Jintang Li, C. Webb, S. S. Pandiella, G. M. Campbell, T. Dyakowski, A. Cowell, D. McGlinchey

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

Solids deposition in the horizontal pipeline of a pneumatic conveying system was studied both mathematically and experimentally. Mathematically modelled results using the coupled discrete element method (DEM) and computational fluid dynamics (CFD) approach have demonstrated an intensive exchange of particles between the stationary layer (deposited particles) and the moving slug and a variation of solids concentration and pressure and velocity distributions across the slug. Slug flows were also visualised experimentally through a glass section and analysed by a high-speed video camera. The amount of particle deposition in the pipeline after a conveying was calculated by controlling the solids feeding rate using a rotary valve and by monitoring the solids flow out of the system using dynamic load cells. Experimentally generated data have quantitatively shown a tendency of more solids deposition with lower gas mass flow rate in slug flows except that, below a certain amount of solids mass flow rate, the deposition becomes independent of gas flow rate.

LanguageEnglish
Pages167-173
Number of pages7
JournalChemical Engineering and Processing: Process Intensification
Volume44
Issue number2
Early online date25 Sep 2004
DOIs
Publication statusPublished - Feb 2005
Externally publishedYes

Fingerprint

Conveying
Flow velocity
Pneumatics
Flow rate
Pipelines
Flow of solids
High speed cameras
Video cameras
Dynamic loads
Velocity distribution
Finite difference method
Pressure distribution
Flow of gases
Computational fluid dynamics
Gases
Glass
Monitoring

Cite this

Li, Jintang ; Webb, C. ; Pandiella, S. S. ; Campbell, G. M. ; Dyakowski, T. ; Cowell, A. ; McGlinchey, D. / Solids deposition in low-velocity slug flow pneumatic conveying. In: Chemical Engineering and Processing: Process Intensification. 2005 ; Vol. 44, No. 2. pp. 167-173.
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Solids deposition in low-velocity slug flow pneumatic conveying. / Li, Jintang; Webb, C.; Pandiella, S. S.; Campbell, G. M.; Dyakowski, T.; Cowell, A.; McGlinchey, D.

In: Chemical Engineering and Processing: Process Intensification, Vol. 44, No. 2, 02.2005, p. 167-173.

Research output: Contribution to journalArticle

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T1 - Solids deposition in low-velocity slug flow pneumatic conveying

AU - Li, Jintang

AU - Webb, C.

AU - Pandiella, S. S.

AU - Campbell, G. M.

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AU - McGlinchey, D.

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AB - Solids deposition in the horizontal pipeline of a pneumatic conveying system was studied both mathematically and experimentally. Mathematically modelled results using the coupled discrete element method (DEM) and computational fluid dynamics (CFD) approach have demonstrated an intensive exchange of particles between the stationary layer (deposited particles) and the moving slug and a variation of solids concentration and pressure and velocity distributions across the slug. Slug flows were also visualised experimentally through a glass section and analysed by a high-speed video camera. The amount of particle deposition in the pipeline after a conveying was calculated by controlling the solids feeding rate using a rotary valve and by monitoring the solids flow out of the system using dynamic load cells. Experimentally generated data have quantitatively shown a tendency of more solids deposition with lower gas mass flow rate in slug flows except that, below a certain amount of solids mass flow rate, the deposition becomes independent of gas flow rate.

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