期刊
FUEL PROCESSING TECHNOLOGY
卷 91, 期 7, 页码 749-758出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.fuproc.2010.02.008
关键词
CFD; Fluidized bed; Particle shape; Sphericity; Entrainment
资金
- UK Engineering and Physical Sciences Research Council [EP/G034281/1]
- Leverhulme-Royal Society
- EU
- Engineering and Physical Sciences Research Council [EP/E039995/1, EP/G034281/1] Funding Source: researchfish
- EPSRC [EP/E039995/1, EP/G034281/1] Funding Source: UKRI
The paper presents a 3-dimensional simulation of the effect of particle shape on char entrainment in a bubbling fluidised bed reactor. Three char particles of 350 mu m side length but of different shapes (cube, sphere, and tetrahedron) are injected into the fluidised bed and the momentum transport from the fluidising gas and fluidised sand is modelled. Due to the fluidising conditions, reactor design and particle shape the char particles will either be entrained from the reactor or remain inside the bubbling bed. The sphericity of the particles is the factor that differentiates the particle motion inside the reactor and their efficient entrainment out of it. The simulation has been performed with a completely revised momentum transport model for bubble three-phase flow, taking into account the sphericity factors, and has been applied as an extension to the commercial finite volume code FLUENT 6.3. (C) 2010 Elsevier B.V. All rights reserved.
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