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A CFD approach on the effect of particle size on char entrainment in bubbling fluidised bed reactors

A CFD approach on the effect of particle size on char entrainment in bubbling fluidised bed reactors
A CFD approach on the effect of particle size on char entrainment in bubbling fluidised bed reactors
The fluid – particle interaction inside a 41.7 mg s?1 fluidised bed reactor is modelled. Three char particles of sizes 500 ?m, 250 ?m, and 100 ?m are injected into the fluidised bed and the momentum transport from the fluidising gas and fluidised sand is modelled. Due to the fluidising conditions and reactor design the char particles will either be entrained from the reactor or remain inside the bubbling bed. The particle size is the factor that differentiates the particle motion inside the reactor and their efficient entrainment out of it. A 3-Dimensional simulation has been performed with a completele revised momentum transport model for bubble three-phase flow according to the literature as an extension to the commercial finite volume code FLUENT 6.2.

CFD, fluidized bed, momentum transport, char entrainment
0961-9534
21-29
Papadikis, Konstantinos
7626c31b-2ac0-46ab-9a73-1d28b347b1d9
Gu, Sai
a6f7af91-4731-46fe-ac4d-3081890ab704
Bridgewater, A.V.
b388761e-3af3-417d-b505-539362150c22
Papadikis, Konstantinos
7626c31b-2ac0-46ab-9a73-1d28b347b1d9
Gu, Sai
a6f7af91-4731-46fe-ac4d-3081890ab704
Bridgewater, A.V.
b388761e-3af3-417d-b505-539362150c22

Papadikis, Konstantinos, Gu, Sai and Bridgewater, A.V. (2010) A CFD approach on the effect of particle size on char entrainment in bubbling fluidised bed reactors. Biomass and Bioenergy, 34 (1), 21-29. (doi:10.1016/j.biombioe.2009.09.007).

Record type: Article

Abstract

The fluid – particle interaction inside a 41.7 mg s?1 fluidised bed reactor is modelled. Three char particles of sizes 500 ?m, 250 ?m, and 100 ?m are injected into the fluidised bed and the momentum transport from the fluidising gas and fluidised sand is modelled. Due to the fluidising conditions and reactor design the char particles will either be entrained from the reactor or remain inside the bubbling bed. The particle size is the factor that differentiates the particle motion inside the reactor and their efficient entrainment out of it. A 3-Dimensional simulation has been performed with a completele revised momentum transport model for bubble three-phase flow according to the literature as an extension to the commercial finite volume code FLUENT 6.2.

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Published date: January 2010
Keywords: CFD, fluidized bed, momentum transport, char entrainment

Identifiers

Local EPrints ID: 147403
URI: https://eprints.soton.ac.uk/id/eprint/147403
ISSN: 0961-9534
PURE UUID: 10923270-303f-4200-b546-c7ca53122d86

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Date deposited: 26 Apr 2010 09:06
Last modified: 06 Aug 2019 19:09

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Contributors

Author: Konstantinos Papadikis
Author: Sai Gu
Author: A.V. Bridgewater

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