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

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.

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

• Acceptance Date: Jul 20, 2017
• Online Publication Date: Sep 20, 2017
• Publication Date: 2018-03
• Deposit Date: Sep 18, 2017
• Publicly Available Date: Sep 21, 2018
• Journal: Environmental progress & sustainable energy
• Print ISSN: 1944-7442
• Publisher: Wiley
• Peer Reviewed: Peer Reviewed
• Volume: 37
• Issue: 2
• Pages: 815-823
• DOI: https://doi.org/10.1002/ep.12705
• Keywords: Energy grass; Combustion characteristics; Kinetics; Lignocellulosic compositions
• Public URL: https://hull-repository.worktribe.com/output/454805
• 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
• Contract Date: Sep 18, 2017