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CFD modelling of particle shrinkage in a fluidized bed for biomass fast pyrolysis with quadrature method of moment

Liu, B, Papadikis, K, Gu, Sai, Fidalgo, B, Longhurst, P, Li, Z and Kolios, A (2017) CFD modelling of particle shrinkage in a fluidized bed for biomass fast pyrolysis with quadrature method of moment Fuel Processing Technology.

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Abstract

An Eulerian-Eulerian multi-phase CFD model was set up to simulate a lab-scale fluidized bed reactor for the fast pyrolysis of biomass. Biomass particles and the bed material (sand) were considered to be particulate phases and modelled using the kinetic theory of granular flow. A global, multi-stage chemical kinetic mechanism was integrated into the main framework of the CFD model and employed to account for the process of biomass devolatilization. A 3-parameter shrinkage model was used to describe the variation in particle size due to biomass decomposition. This particle shrinkage model was then used in combination with a quadrature method of moment (QMOM) to solve the particle population balance equation (PBE). The evolution of biomass particle size in the fluidized bed was obtained for several different patterns of particle shrinkage, which were represented by different values of shrinkage factors. In addition, pore formation inside the biomass particle was simulated for these shrinkage patterns, and thus, the density variation of biomass particles is taken into account.

Item Type: Article
Subjects : Chemical & Process Engineering
Divisions : Faculty of Engineering and Physical Sciences > Chemical and Process Engineering
Authors :
NameEmailORCID
Liu, BUNSPECIFIEDUNSPECIFIED
Papadikis, KUNSPECIFIEDUNSPECIFIED
Gu, Saisai.gu@surrey.ac.ukUNSPECIFIED
Fidalgo, BUNSPECIFIEDUNSPECIFIED
Longhurst, PUNSPECIFIEDUNSPECIFIED
Li, ZUNSPECIFIEDUNSPECIFIED
Kolios, AUNSPECIFIEDUNSPECIFIED
Date : 8 May 2017
Identification Number : 10.1016/j.fuproc.2017.04.012
Copyright Disclaimer : © 2017. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
Uncontrolled Keywords : Fluidized bed, biomass, fast pyrolysis, CFD, QMOM, particle shrinkage
Related URLs :
Depositing User : Symplectic Elements
Date Deposited : 09 May 2017 18:16
Last Modified : 25 Jul 2017 14:59
URI: http://epubs.surrey.ac.uk/id/eprint/814147

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