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Thermal behaviour and kinetics of coal/biomass blends during co-combustion
Open accessAbstract
The thermal characteristics and kinetics of coal, biomass (pine sawdust) and their blends were evaluated under combustion conditions using a non-isothermal thermogravimetric method (TGA). Biomass was blended with coal in the range of 5-80 wt.% to evaluate their co-combustion behaviour. No significant interactions were detected between the coal and biomass, since no deviations from their expected behaviour were observed in these experiments. Biomass combustion takes place in two steps: between 200 and 360 degrees C the volatiles are released and burned, and at 360-490 degrees C char combustion takes place. In contrast, coal is characterized by only one combustion stage at 315-615 degrees C. The coal/biomass blends presented three combustion steps, corresponding to the sum of the biomass and coal individual stages. Several solid-state mechanisms were tested by the Coats-Redfern method in order to find out the mechanisms responsible for the oxidation of the samples. The kinetic parameters were determined assuming single separate reactions for each stage of thermal conversion. The combustion process of coal consists of one reaction, whereas, in the case of the biomass and coal/biomass blends, this process consists of two or three independent reactions, respectively. The results showed that the chemical first order reaction is the most effective mechanism for the first step of biomass oxidation and for coal combustion. However, diffusion mechanisms were found to be responsible for the second step of biomass combustion.
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Citations
Cites
Kinetic Parameters from Thermogravimetric Data
COATS, A. W., & REDFERN, J. P. (1964) · Nature · doi:10.1038/201068a0 · Cited by 6,930
Cited by
Syed-Hassan, S. S. A., Wang, Y., Hu, S., Su, S., & Xiang, J. (2017) · Renewable and Sustainable Energy Reviews · doi:10.1016/j.rser.2017.05.262 · Cited by 641
Coal–biomass co-combustion: An overview
Sahu, S. G., Chakraborty, N., & Sarkar, P. (2014) · Renewable and Sustainable Energy Reviews · doi:10.1016/j.rser.2014.07.106 · Cited by 406
Peng, C., Zhai, Y., Zhu, Y., Xu, B., Wang, T., Li, C., & Zeng, G. (2016) · Fuel · doi:10.1016/j.fuel.2016.02.068 · Cited by 397
Hydrothermal Carbonization of Waste Biomass for Energy Generation
Liu, Z., & Balasubramanian, R. (2012) · Procedia Environmental Sciences · doi:10.1016/j.proenv.2012.10.022 · Cited by 114
Hadey, C., Allouch, M., Alami, M., Boukhlifi, F., & Loulidi, I. (2022) · The Scientific World Journal · doi:10.1155/2022/2554475 · Cited by 53
Metadata
- Authors
- Gil, M. V., Casal, D., Pevida, C., Pis, J. J., & Rubiera, F.
- Venue
- Bioresource Technology
- Publisher
- Elsevier BV
- Published
- 2010-07
- Volume
- 101
- Issue
- 14
- Pages
- 5601-5608
- ISSN
- 0960-8524 (ISSN-L)
- OpenAlex
- W1973497326
- Cited by
- 540
- References
- 1
- FWCI
- 14.56
- Type
- journal article
- Language
- en
- Open access
- green
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- Gil, M. V., Casal, D., Pevida, C., Pis, J. J., & Rubiera, F. (2010). Thermal behaviour and kinetics of coal/biomass blends during co-combustion. Bioresource Technology. https://doi.org/10.1016/j.biortech.2010.02.008
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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