THERMAL SCIENCE

International Scientific Journal

Authors of this Paper

External Links

Zhen Gong

,

Changzhong Song

,

Yuanyuan Li

,

Ze Li

COMBUSTION CHARACTERISTICS OF COAL GANGUE AND BIOMASS UNDER AN O2/CO2 ATMOSPHERE

ABSTRACT
Oxygen concentration and biomass content are key factors of the combustion of a mixed sample of biomass and coal gangue. Herein, we studied the effect of oxygen concentration and biomass content and their corresponding combustion and kinetic characteristics. Experiments were conducted in a thermogravimetric analyzer under an O2/CO2 atmosphere. Results showed that the fixed carbon combustion temperature, ignition temperature, and exothermic peak temperature decreased with oxygen concentration increased. By contrast, the burning rate of volatilization increased with oxygen concentration increased. The total and maximum loss rates of the sample, the burnout temperature, the exothermic peak temperature, and the comprehensive combustion index S gradually increased. As oxygen concentration increased, the activation energy at the initial stage of combustion gradually decreased, whereas the activation energy at the end of the reaction gradually increased when the oxygen concentration increased. Activation energy could be rapidly reduced after a small amount of biomass was added, whereas the biomass content had no significant influence on the activation energy of the samples at the end of combustion.
KEYWORDS
thermogravimetric analyzer, CG, biomass, kinetic
PAPER SUBMITTED: 2019-10-12
PAPER REVISED: 2020-01-05
PAPER ACCEPTED: 2020-01-27
PUBLISHED ONLINE: 2020-02-08
DOI REFERENCE: https://doi.org/10.2298/TSCI191012061G
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2020, VOLUME 24, ISSUE Issue 5, PAGES [2809 - 2821]
REFERENCES
  1. Hadjipaschalis, I., et al., Assessment of Oxyfuel Power Generation Technologies, Renewable and Sustainable Energy Reviews, 13 (2009), 9, pp. 2637-2644, DOI No. doi.org/10.1016/j.rser.2009.07.001
  2. Hodzic, N., et al., Concept of Co-Firing Coal with Biomass and Natural Gas - on Track of Sustainable Solution for Future Thermal Power Plants, Thermal Science, 20 (2016), 4, pp. 1171-1184, DOI No. 10.2298/tsci151126078h
  3. Toftegaard, M. B., et al., Oxy-Fuel Combustion of Solid Fuels, Progress in Energy and Combustion Science, 36 (2010), 5, pp. 581-625, DOI No. doi.org/10.1016/j.pecs.2010.02.001
  4. Gao, Z., et al., Thermogravimetric Test Study on Combustion Characteristics of Mixed Coal, Journal of Power Engineering, (2002), 03, pp. 1764-1767+1749
  5. Nimmo, W., et al., The Effect of O2 Enrichment on NOx Formation in Biomass Co-Fired Pulverised Coal Combustion, Fuel, 89 (2010), 10, pp. 2945-2952, DOI No. doi.org/10.1016/j.fuel.2009.12.004
  6. Chen, L., et al., Oxy-Fuel Combustion of Pulverized Coal: Characterization, Fundamentals, Stabilization and CFD Modeling, Progress in Energy and Combustion Science, 38 (2012), 2, pp. 156-214, DOI No. doi.org/10.1016/j.pecs.2011.09.003
  7. Demirbas, A., Combustion Characteristics of Different Biomass Fuels, Progress in Energy and Combustion Science, 30 (2004), 2, pp. 219-230, DOI No. doi.org/10.1016/j.pecs.2003.10.004
  8. Akinrinola, F. S., et al., Characterization of Selected Nigerian Biomass for Combustion and Pyrolysis Applications, Energy & Fuels, 28 (2014), 6, pp. 3821-3832
  9. Cepic, Z. M., Nakomcic-Smaragdakis, B. B., Experimental Analysis of the Influence of Air-Flow Rate on Wheat Straw Combustion in a Fixed Bed, Thermal Science, 21 (2017), 3, pp. 1443-1452, DOI No. 10.2298/tsci160403261c
  10. Tahmasebi, A., et al., Thermogravimetric Study of the Combustion of Tetraselmis Suecica Microalgae and its Blend with a Victorian Brown Coal in O2/N2 and O2/CO2 Atmospheres, Bioresource Technology, 150 (2013), pp. 15-27, DOI No. doi.org/10.1016/j.biortech.2013.09.113
  11. Kayahan, U., Özdoğan, S., Oxygen Enriched Combustion and Co-Combustion of Lignites and Biomass in a 30kWth Circulating Fluidized Bed, Energy, 116 (2016), pp. 317-328
  12. Kazanc, F., et al., Emissions of NOx and SO2 from Coals of Various Ranks, Bagasse, and Coal-Bagasse Blends Burning in O2/N2 and O2/CO2 Environments, Energy Fuels, 25 (2011), 7, pp. 2850-2861
  13. Riaza, J., et al., Ignition and NO Emissions of Coal and Biomass Blends under Different Oxy-fuel Atmospheres, Energy Procedia, 37 (2013), pp. 1405-1412, DOI No. doi.org/10.1016/j.egypro.2013.06.016
  14. Zhou, C., et al., Partitioning and Transformation Behavior of Toxic Elements During Circulated Fluidized Bed Combustion of Coal Gangue, Fuel, 135 (2014), 11, pp. 1-8
  15. Liu, H., Liu, Z., Recycling Utilization Patterns of Coal Mining Waste in China, Resources Conservation & Recycling, 54 (2010), 12, pp. 1331-1340
  16. Querol, X., et al., Environmental Characterization of Burnt Coal Gangue Banks at Yangquan, Shanxi Province, China, International Journal of Coal Geology, 75 (2008), 2, pp. 93-104, DOI No. doi.org/10.1016/j.coal.2008.04.003
  17. Zhang, Y., et al., Interactions of Coal Gangue and Pine Sawdust During Combustion of Their Blends Studied using Differential Thermogravimetric Analysis, Bioresour Technol, 214 (2016), pp. 396-403
  18. Chen, Y., Experimental Study on the Pyrolysis and Combustion Characteristics of Biomass and Coal Gangue, Chongqing University, 2007.
  19. Song, C., et al., Orthogonal Experiment Analysis of Coal Gangue and Corn Straw Mixed Burning under Considering Multiple Factors, Journal of Physics: Conference Series, 1324 (2019), pp. 012065, DOI No. 10.1088/1742-6596/1324/1/012065
  20. Song, C., et al., Analysis of Mixed Combustion Characteristics of Coal Gangue and Biomass, Renewable Energy Resources, 37 (2019), 12, pp. 1764-1769 (in Chinese)
  21. Duan., L., et al., Combustion Characteristics and Kinetic Analysis of Pulverized Coal under O2/CO2 Atmosphere, Journal of Combustion Science and Technology, 24 (2018), 03, pp. 223-231
  22. Biagini, E., et al., Devolatilization Rate of Biomasses and Coal-Biomass Blends: an Experimental Investigation, Fuel, 81 (2002), 8, pp. 1041-1050
  23. Li, Q., et al., Comparison of Pulverized Coal Combustion in Air and in O2/CO2 Mixtures by Thermo-Gravimetric Analysis, Journal of Analytical & Applied Pyrolysis, 85 (2009), 1, pp. 521-528
  24. Gong, Z., et al., Orthogonal Test Analysis of mixed Burning of Coal Gangue and Corn Stalk, Journal of Inner Mongolia University of Technology (natural science edition), (2019), 04, pp. 261-268
  25. Chen, X., et al., Thermal Analyses of the Lignite Combustion in Oxygen-Enriched Atmosphere, Thermal Science, 19 (2015), 3, pp. 801-811, DOI No. 10.2298/tsci141005007c
  26. Huang, X., et al., Combustion Characteristics of Fine- and Micro-pulverized Coal in the Mixture of O2/CO2, Energy & Fuels, 22 (2008), 6, pp. 3756-3762
  27. Li, J., et al., Study on Combustion Characteristics of Coal Gangue and Vulcanized Nitrile Butadiene Rubber, Renewable Energy Resources, 36 (2018), 11, pp. 1581-1587
  28. Zhang, Y.-F., et al., Oxygen-Enriched Combustion of Lignite, Thermal Science, 19 (2015), 4, pp. 1389-1392, DOI No. 10.2298/tsci1504389z
  29. Zou, S., et al., Pyrolysis Characteristics and Kinetics of the Marine Microalgae Dunaliella Tertiolecta using Thermogravimetric Analyzer, Bioresource Technology, 101 (2010), 1, pp. 359-365
  30. Gil, M. V., et al., Thermal Behaviour and Kinetics of Coal/Biomass Blends during Co-Combustion, Bioresour Technol, 101 (2010), 14, pp. 5601-8, DOI No. 10.1016/j.biortech.2010.02.008
  31. Jankovic, B., et al., A Kinetic Study of Non-Isothermal Decomposition Process of Anhydrous Nickel Nitrate under Air Atmosphere, Physica B-Condensed Matter, 404 (2009), 16, pp. 2263-2269
  32. Xu,T., Hui, S., Combustion Science, China Machine Press, Beijing, China, 2017
PDF VERSION [DOWNLOAD]
Combustion characteristics of coal gangue and biomass under an O2/CO2 atmosphere

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence