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Co-Combustion of Food Solid Wastes and Pulverized Coal for Blast Furnace Injection: Characteristics, Kinetics, and Superiority

Author

Listed:
  • Jian Yang

    (School of Metallurgical Engineering, Anhui University of Technology, Ma’anshan 243002, China)

  • Zhenying Li

    (School of Metallurgical Engineering, Anhui University of Technology, Ma’anshan 243002, China)

  • Rufei Wei

    (School of Metallurgical Engineering, Anhui University of Technology, Ma’anshan 243002, China)

  • Di Zhou

    (School of Metallurgical Engineering, Anhui University of Technology, Ma’anshan 243002, China)

  • Hongming Long

    (School of Metallurgical Engineering, Anhui University of Technology, Ma’anshan 243002, China
    Key Laboratory of Metallurgical Emission Reduction & Resources Recycling (Anhui University of Technology), Ministry of Education, Ma’anshan 243002, China)

  • Jiaxin Li

    (School of Metallurgical Engineering, Anhui University of Technology, Ma’anshan 243002, China)

  • Chunbao (Charles) Xu

    (Department of Chemical and Biochemical Engineering, Institute for Chemicals and Fuels from Alternative Resources (ICFAR), Western University, London, ON N6GA5B9, Canada)

Abstract

The combustion characteristics and kinetics of food solid wastes (FSW), pulverized coal (PC), and their mixtures were studied by a non-isothermal thermogravimetric method. In the co-combustion of FSW and PC, with the increase in FSW content in the mixture, the initial decomposition temperature, burnout temperature, and ignition temperature of the mixture decreased, and the flammability index and comprehensive combustion characteristic index gradually increased. The co-combustion of FSW and PC showed an inhibitory effect in the devolatilization stage but exhibited a combustion-promoting effect in the fixed carbon combustion stage. The interaction between FSW and PC while co-combusting them appeared to be dominated by thermal effects. On one hand, FSW combusted first and released heat that was partially absorbed by the PC, which hence suppressed the devolatilization stage of the co-combustion process. On the other hand, the PC absorbed the heat released by the combustion of the FSW, which increased the combustion rate of the PC in the fixed carbon combustion stage of the co-combustion process. The activation energy of the devolatilization stage and the fixed carbon combustion stage of the co-combustion process was calculated to be 34.16–74.52 kJ/mol and 15.04–36.15 kJ/mol, respectively. In general, the combustion performance of FSW is better than that of PC. The mixed injection of FSW and PC can improve the overall combustion efficiency and reduce CO 2 emissions in the iron-making process.

Suggested Citation

  • Jian Yang & Zhenying Li & Rufei Wei & Di Zhou & Hongming Long & Jiaxin Li & Chunbao (Charles) Xu, 2022. "Co-Combustion of Food Solid Wastes and Pulverized Coal for Blast Furnace Injection: Characteristics, Kinetics, and Superiority," Sustainability, MDPI, vol. 14(12), pages 1-16, June.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:12:p:7156-:d:836220
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    References listed on IDEAS

    as
    1. Zhou, Di & Wei, Rufei & Long, Hongming & Li, Jiaxin & Qi, Liying & Xu, Chunbao Charles, 2020. "Combustion characteristics and kinetics of different food solid wastes treatment by blast furnace," Renewable Energy, Elsevier, vol. 145(C), pages 530-541.
    2. Lelis Gonzaga Fraga & João Silva & Senhorinha Teixeira & Delfim Soares & Manuel Ferreira & José Teixeira, 2020. "Influence of Operating Conditions on the Thermal Behavior and Kinetics of Pine Wood Particles Using Thermogravimetric Analysis," Energies, MDPI, vol. 13(11), pages 1-22, June.
    3. Wei, Rufei & Xiang, Dongwen & Long, Hongming & Xu, Chunbao (Charles) & Li, Jiaxin, 2020. "Reduction of iron oxide by lignin: Characteristics, kinetics and superiority," Energy, Elsevier, vol. 197(C).
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    Cited by:

    1. Hridoy Roy & Samiha Raisa Alam & Rayhan Bin-Masud & Tonima Rahman Prantika & Md. Nahid Pervez & Md. Shahinoor Islam & Vincenzo Naddeo, 2022. "A Review on Characteristics, Techniques, and Waste-to-Energy Aspects of Municipal Solid Waste Management: Bangladesh Perspective," Sustainability, MDPI, vol. 14(16), pages 1-25, August.

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