Numerical simulation approaches for modelling a single coal particle combustion and gasification

Sutardi, T., Wang, L., Paul, M. C. and Karimi, N. (2018) Numerical simulation approaches for modelling a single coal particle combustion and gasification. Engineering Letters, 26(2), pp. 257-266.

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Combustion and gasification are the fundamental process es of coal utilization, and t he research of these applications has been continuously progressing. Numerical modelling is one of the methodologies that also has significant advancement , due to the progress of computational engineering and also considering economic impact. This paper is a part of the numerical developments on the coal combustion and gasification that introduces a new approach by which a single coal particle model has been developed and used to investigate those process es. CFD (Computational Fluid Dynamics ) techniques with an Eddy Break Up (EBU) model and also with a set of kinetics parameter reactions are used in the study . However, defining the chemical reactions is crucial for the model development . Seven reactions for coal combustion and additional six reactions for ga sification are investigated . It is identified that the best fit kinetic parameter value for the pre- exponent factor ( A ) of R2 and R3 , while comparing with the experimental results, is 20 and 1000, respectively . Finally, these values are implemented in to the model of both coal particle combustion and gasification for investigation. The results of the simulation show that the H 2 and CH 4 products from the gasification are significantly higher than those from the combustion. The maximum mole fraction value of CO products in combustion is ~ 1.5 times higher than in gasification at an air condition, which is unexpected. However, CO production lasted longer than ~ 200 ms at O 2 condition below than 21% in the coal gasification, which resulted in more CO production. The se results clear ly identify the process of coal combustion and gasification. Th is particle model can thus be considered for further investigation for various coal combustion and gasification applications.

Item Type:Articles
Additional Information:The first author acknowledges the scholarship support to the Ministry of Research, Technology and Higher Education Republic of Indonesia through the RISET-Pro (Research & Innovation Science & Technology Program), and the research support from the University of Glasgow.
Glasgow Author(s) Enlighten ID:Paul, Professor Manosh and Sutardi, Tata and Wang, Dr Linwei and Karimi, Dr Nader
Authors: Sutardi, T., Wang, L., Paul, M. C., and Karimi, N.
College/School:College of Science and Engineering > School of Engineering > Systems Power and Energy
Journal Name:Engineering Letters
Publisher:Newswood Ltd.
ISSN (Online):1816-0948
Published Online:30 May 2018
Copyright Holders:Copyright © 2018 International Association of Engineers
First Published:First published in Engineering Letters 26(2): 257-266
Publisher Policy:Reproduced with the permission of the Editor

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