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CFD modelling of the fast pyrolysis of an in-flight cellulosic particle subjected to convective heat transfer

Papadikis, K, Gerhauser, H, Bridgwater, AV and Gu, S (2008) CFD modelling of the fast pyrolysis of an in-flight cellulosic particle subjected to convective heat transfer Biomass and Bioenergy, 33 (1, Jan). pp. 97-107.

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Abstract

The pyrolysis of a freely moving cellulosic particle inside a View the MathML source continuously fed fluid bed reactor subjected to convective heat transfer is modelled. The Lagrangian approach is adopted for the particle tracking inside the reactor, while the flow of the inert gas is treated with the standard Eulerian method for gases. The model incorporates the thermal degradation of cellulose to char with simultaneous evolution of gases and vapours from discrete cellulosic particles. The reaction kinetics is represented according to the Broido–Shafizadeh scheme. The convective heat transfer to the surface of the particle is solved by two means, namely the Ranz–Marshall correlation and the limit case of infinitely fast external heat transfer rates. The results from both approaches are compared and discussed. The effect of the different heat transfer rates on the discrete phase trajectory is also considered.

Item Type: Article
Authors :
NameEmailORCID
Papadikis, KUNSPECIFIEDUNSPECIFIED
Gerhauser, HUNSPECIFIEDUNSPECIFIED
Bridgwater, AVUNSPECIFIEDUNSPECIFIED
Gu, Ssai.gu@surrey.ac.ukUNSPECIFIED
Date : 20 June 2008
Identification Number : https://doi.org/10.1016/j.biombioe.2008.04.021
Uncontrolled Keywords : CFD, Fast pyrolysis, Cellulose, Particle modeling, Fluidised bed
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 13:51
Last Modified : 17 May 2017 15:13
URI: http://epubs.surrey.ac.uk/id/eprint/840581

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