Projects per year
Abstract
The influence of bed composition – that is, the relative proportions of different components – on the mixing of fluidised beds containing mixtures of Geldart group B and D particles is of considerable importance to a variety of contemporary industrial processes, such as plastic recycling and biomass gasification. In this study, we use Positron Emission Particle Tracking (PEPT) to analyse the detailed, three-dimensional flow dynamics of such a system and, from these measurements, determine the rate of mixing as a function of bed composition. Our results show that for comparatively small fractions (/DK30%)
of Group D particles, the system’s mixing dynamics are only weakly affected by variations in /D . For higher concentrations, however, the mixing effectiveness of the system is observed to decrease sharply, and marked changes in the system’s flow patterns are observed, with a previously undocumented meta-stable state recorded for the highest concentrations of group D particles.
of Group D particles, the system’s mixing dynamics are only weakly affected by variations in /D . For higher concentrations, however, the mixing effectiveness of the system is observed to decrease sharply, and marked changes in the system’s flow patterns are observed, with a previously undocumented meta-stable state recorded for the highest concentrations of group D particles.
Original language | English |
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Article number | 118562 |
Journal | Chemical Engineering Science |
Volume | 271 |
Early online date | 13 Feb 2023 |
DOIs | |
Publication status | Published - 1 May 2023 |
Keywords
- Positron emission particle tracking
- Fluidised bed
- Mixing
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Dive into the research topics of 'Effect of system composition on mixing in binary fluidised beds'. Together they form a unique fingerprint.Projects
- 4 Finished
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Advanced Imaging and Numerical Modelling of Segregation and Transport of Plastics in Fluidised Beds: Toward a Circular Economy for Plastics
Windows-Yule, C. (Principal Investigator)
Engineering & Physical Science Research Council
1/02/21 → 30/04/23
Project: Research Councils
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Novel Positron Imaging and Euler-Lagrange Modelling of Plastic Recycling Systems
Windows-Yule, C. (Principal Investigator)
1/01/21 → 31/12/22
Project: Research
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Positron Imaging of a Novel Plastic-Recycling System
Windows-Yule, C. (Principal Investigator)
31/03/20 → 30/03/22
Project: Research Councils
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KTP - Recycling Technologies Ltd
Leeke, G. (Co-Investigator), Windows-Yule, C. (Co-Investigator) & Seville, J. (Principal Investigator)
Recycling Technologies Ltd, TECHNOLOGY STRATEGY BOARD
4/11/19 → 3/11/21
Project: Research