Kinetic Modelling for Tar Evolution and Formation in a Downdraft Gasifier

Salem, A.M., Kumar, U. and Paul, M.C. (2018) Kinetic Modelling for Tar Evolution and Formation in a Downdraft Gasifier. In: World Congress on Engineering 2018, London, UK, 04-06 Jul 2018, pp. 800-804. ISBN 9789881404893

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Biomass gasification modeling is a powerful tool used to optimize the design of a gasifier. A detailed kinetic model was built by the current authors [1] to predict the behavior of air blown downdraft gasifier for a wide range of materials within the range of (38≤C≤52) %, (5.2≤H≤7) %, and (21.7≤O≤45) %. The model was verified and showed a good stability for a wide range of working parameters like equivalence ratio and moisture content. In the current research, 4 main tar species are added to the model to represent tar formation using detailed kinetic reactions. The yield of tar species is discussed for different zones of a gasifier based on temperature of each zone. Mass and energy balance are calculated. 18 different kinetic reactions are implemented in the kinetic code to predict the optimum working conditions that leads to the production of higher value producer gas. Results conclude that using ER of 0.3 with moisture content levels lower than 10% will lead to the production of higher yields of syngas with lower amounts of tar.

Item Type:Conference Proceedings
Glasgow Author(s) Enlighten ID:Kumar, Dr Umesh and Paul, Professor Manosh and Salem, Ahmed Morsy Mostafa
Authors: Salem, A.M., Kumar, U., and Paul, M.C.
College/School:College of Science and Engineering > School of Engineering > Systems Power and Energy
Copyright Holders:Copyright © 2018 International Association of Engineers
First Published:First published in Proceedings of the World Congress on Engineering 2018: 800-804
Publisher Policy:Reproduced in accordance with the publisher copyright policy
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