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Numerical investigation of microwave-assisted pyrolysis of lignin

Gadkari, S, Fidalgo, B and Gu, S (2016) Numerical investigation of microwave-assisted pyrolysis of lignin Fuel Processing Technology, 156. pp. 473-484.

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A comprehensive three-dimensional mathematical model is developed for studying the microwave-assisted pyrolysis of biomass. Kraft Lignin is considered as biomass feedstock in the model, and a mixture of lignin and char, is used as the sample for pyrolysis. A lumped kinetic model which considers three lumped pyrolysis products (gas, liquid and remaining solid fractions) is coupled with the governing equations for the microwave field, heat transfer, mass transfer, Darcy fluid flow and a transient numerical analysis is performed. The distribution of electric field in the microwave cavity, and the distribution of electric field, temperature, and pyrolysis products within the lignin sample are presented. The lignin sample is predicted to undergo volumetric heating when subjected to microwave heating. Accordingly the reaction zone extends from the center of the biomass sample bed towards the outer surface. Preliminary evaluation of the applicability of the model for assessing the effect of different parameters on the microwave pyrolysis of lignin is also carried out.

Item Type: Article
Subjects : Chemical and Process Engineering
Divisions : Faculty of Engineering and Physical Sciences > Chemical and Process Engineering
Authors :
Gadkari, S
Fidalgo, B
Gu, S
Date : 20 October 2016
Funders : Engineering and Physical Sciences Research Council (EPSRC)
DOI : 10.1016/j.fuproc.2016.10.012
Copyright Disclaimer : © 2016 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license
Uncontrolled Keywords : Biomass; Lignin; Pyrolysis; Microwave heating; 3D Mathematical model
Depositing User : Symplectic Elements
Date Deposited : 26 Oct 2016 08:01
Last Modified : 11 Dec 2018 11:22

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