Abstract
The use of the coal in power generation poses serious issues of particulate emissions and efficiency limitations. Power generation through a gasification route is a potential eco-friendly method. However, the gasification of high-ash-content coal itself is a major challenge, as the presence of high ash content (> 40%) limits the rate of reaction and leads to flow resistance, significantly affecting the gas quality. To overcome this limitation, one has to determine the optimal feasible operating parameters for its gasification. In the present investigation, a two-phase equilibrium model is used to determine the optimally feasible range of the equivalence ratio for gasification of five different types of coals whose ash content varies from 41.08 to 52.56% on a dry weight percentage basis. A parametric study is also carried out with respect to enriched O2 air and steam addition to find the optimal process configuration. Moreover, response surface methodology is used to optimize the operating variables. From the analysis, it is finally observed that for high-ash-content coals, the most optimally feasible operating parameters are the use of 26.5% O2-enriched air with 10% mass addition by steam.
Graphical abstract
Similar content being viewed by others
Data availability
All data generated or analysed during this study are included in this article.
Code availability
Not applicable.
References
Z. Yang, L. Zhang, J. Peng, Experimental study on gasification and kinetic characteristics of inferior coal with high ash content under CO2 atmosphere. Energy Sources Part A 38(3), 309–314 (2016)
Z. Yang et al., Gasification of inferior coal with high ash content under co2 and o2/h2o atmospheres. Int. J. Green Energy 12(10), 1046–1053 (2015)
F. Li et al., A kinetics study on the gasification of poor quality coal. Energy Sources Part A 34(21), 1943–1957 (2012)
M. Vajpeyi et al., Studies on gasification of two Indian low-rank coals. Energy Sources 8(4), 355–367 (1986)
K. Jayaraman, I. Gokalp, Thermogravimetric and evolved gas analyses of high ash Indian and Turkish coal pyrolysis and gasification. J. Therm. Anal. Calorim. 121(2), 919–927 (2015)
G. Aranda et al., Conversion of high-ash coal under steam and CO2 gasification conditions. Fuel Process. Technol. 141, 16–30 (2016)
S. Saha et al., Studies on CO2 gasification reactivity of high ash Indian coal. Int. J. Emerging Technol. Adv. Eng 3, 29–33 (2013)
H. Ghassemi, S.M. Mostafavi, R. Shahsavan-Markadeh, Modeling of high-ash coal gasification in an entrained-flow gasifier and an IGCC plant. J Energy Eng 142(4), 04015052 (2016)
Jayaraman K., et al. High ash Indian and Turkish coal pyrolysis and gasification studies in various ambiences. in MCS. 2013.
J. Ratnadhariya, S. Channiwala, Three zone equilibrium and kinetic free modeling of biomass gasifier–a novel approach. Renew. Energy 34(4), 1050–1058 (2009)
Gautam G., Parametric study of a commercial-scale biomass downdraft gasifier: experiments and equilibrium modeling. (2010)
A. Melgar et al., Thermochemical equilibrium modelling of a gasifying process. Energy Convers. Manage. 48(1), 59–67 (2007)
S. Channiwala, On biomass gasification process and technology development some analytical and experimental investigations (Indian Institute of Technology, Bombay, 1992)
M. Shahbaz et al., Optimization of hydrogen and syngas production from PKS gasification by using coal bottom ash. Biores. Technol. 241, 284–295 (2017)
S. Jarungthammachot, A. Dutta, Thermodynamic equilibrium model and second law analysis of a downdraft waste gasifier. Energy 2(9), 1660–1669 (2007)
Funding
No funding was received for conducting this study.
Author information
Authors and Affiliations
Corresponding author
Ethics declarations
Conflict of interest
The authors declare that they have no conflict of interest.
Additional information
Publisher's Note
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Rights and permissions
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
About this article
Cite this article
Dave, P.P., Shah, P.D., Poonawala, T.Y. et al. Determination of optimally feasible operating parameters for gasification of high-ash-content coal. MRS Energy & Sustainability 10, 100–112 (2023). https://doi.org/10.1557/s43581-022-00056-6
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1557/s43581-022-00056-6