Fulchini, F, Nan, W, Ghadiri, M orcid.org/0000-0003-0479-2845 et al. (5 more authors) (2017) CFD-DEM Analysis of Particle Attrition in a Jet in a Fluidised Bed. In: Radjai, F, Nezamabadi, S, Luding, S and Delenne, JY, (eds.) EPJ Web of Conferences. Powders and Grains 2017 – 8th International Conference on Micromechanics on Granular Media, 03-07 Jul 2017, Montpellier, France. EDP Sciences
Abstract
In fluidised bed processes, the solids are in vigorous motion and thus inevitably subjected to mechanical stresses due to inter-particle and particle-wall impacts. These stresses lead to a gradual degradation of the particles by surface wear, abrasion and body fragmentation commonly termed attrition. One significant contribution of attrition comes from the air jets of the fluidised bed distributor. Particles are entrained into the air jet, where they get accelerated and impacted onto the fluidised bed particles. The jet induced attrition only affects the part of the bed which is limited by the jet length, where the mode of attrition is largely collisional. The overall jet attrition rate is therefore the result of the combination of the single particle damage and the flux of particles entering into that region. The attrition behaviour of particles in the jet region is analysed by evaluating their propensity of breakage experimentally and by simulating an air-jet in a bed of particles by CFD-DEM. The frequency of collisions and impact velocities are estimated from which the attrition due to a single air-jet is predicted.
Metadata
Item Type: | Proceedings Paper |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © The Authors, published by EDP Sciences, 2017. This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Chemical & Process Engineering (Leeds) |
Funding Information: | Funder Grant number Total S.A. IPA - 4248 |
Depositing User: | Symplectic Publications |
Date Deposited: | 09 Aug 2017 09:50 |
Last Modified: | 23 Jun 2023 22:33 |
Status: | Published |
Publisher: | EDP Sciences |
Identification Number: | 10.1051/epjconf/201714007017 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:119934 |