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Dependency of the combustion behavior of energy grass and three other types of biomass upon lignocellulosic composition

Ma, Ying; Guan, Yanjun; Zhang, Kai; Xu, Gang; Yang, Yongping; Stevenson, Paul

Authors

Ying Ma

Yanjun Guan

Kai Zhang

Gang Xu

Yongping Yang

Paul Stevenson

Abstract

The combustion characteristics of four kinds of biomass fuels (energy grass, sawdust, corn cob, and walnut shell) are investigated in this article. All the samples are heated from room temperature to 800°C at multiple heating rates of 10, 20, and 30°C/min. The effect of hemicellulose, cellulose, and lignin components on the pyrolysis and combustion processes of energy grass is explored by comparison to those of the other three types of biomass. The hemicellulose and cellulose content of samples could improve the devolatilization performance during biomass combustion. Furthermore, the comprehensive combustion index suggested herein indicates that the combustion performance of energy grass or walnut shell is limited by their high ash content or their low ratio of cellulose to lignin. Kinetic parameters are obtained by combining the isoconversional method (OFW and KAS models) and the method of master-plots. The apparent activation energy of the devolatilization stage is higher than that of the char oxidization stage, which is mainly influenced by the lignocellulosic composition.

Publication Date 2018-03
Journal Environmental progress & sustainable energy
Print ISSN 1944-7442
Electronic ISSN 1944-7450
Publisher Wiley
Peer Reviewed Peer Reviewed
Volume 37
Issue 2
Pages 815-823
Institution Citation Ma, Y., Guan, Y., Zhang, K., Xu, G., Yang, Y., & Stevenson, P. (2018). Dependency of the combustion behavior of energy grass and three other types of biomass upon lignocellulosic composition. Environmental Progress and Sustainable Energy, 37(2), 815-823. https://doi.org/10.1002/ep.12705
DOI https://doi.org/10.1002/ep.12705
Keywords Energy grass; Combustion characteristics; Kinetics; Lignocellulosic compositions
Publisher URL http://onlinelibrary.wiley.com/doi/10.1002/ep.12705/full
Additional Information This is a description of an article which has been published in: Environmental progress & sustainable energy, 2017

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