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Co-Combustion Studies of Low-Rank Coal and Refuse-Derived Fuel: Performance and Reaction Kinetics

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  • Mudassar Azam

    (Institute of Chemical, Environmental and Bioscience Engineering, Vienna University of Technology (TU WIEN), Getreidemarkt 9, 1060 Vienna, Austria
    Institute of Chemical Engineering & Technology (ICET), University of the Punjab, Lahore 54590, Pakistan)

  • Asma Ashraf

    (Institute of Chemical Engineering & Technology (ICET), University of the Punjab, Lahore 54590, Pakistan
    Sharif College of Engineering & Technology, University of Engineering and Technology (UET), Lahore 39161, Pakistan)

  • Saman Setoodeh Jahromy

    (Institute of Chemical, Environmental and Bioscience Engineering, Vienna University of Technology (TU WIEN), Getreidemarkt 9, 1060 Vienna, Austria)

  • Sajjad Miran

    (Department of Mechanical Engineering, University of Gujrat, Gujrat 50700, Pakistan)

  • Nadeem Raza

    (Department of Chemistry, Emerson University Multan, Multan 60000, Pakistan)

  • Florian Wesenauer

    (Institute of Chemical, Environmental and Bioscience Engineering, Vienna University of Technology (TU WIEN), Getreidemarkt 9, 1060 Vienna, Austria)

  • Christian Jordan

    (Institute of Chemical, Environmental and Bioscience Engineering, Vienna University of Technology (TU WIEN), Getreidemarkt 9, 1060 Vienna, Austria)

  • Michael Harasek

    (Institute of Chemical, Environmental and Bioscience Engineering, Vienna University of Technology (TU WIEN), Getreidemarkt 9, 1060 Vienna, Austria)

  • Franz Winter

    (Institute of Chemical, Environmental and Bioscience Engineering, Vienna University of Technology (TU WIEN), Getreidemarkt 9, 1060 Vienna, Austria)

Abstract

In connection to present energy demand and waste management crisis in Pakistan, refuse-derived fuel (RDF) is gaining importance as a potential co-fuel for existing coal fired power plants. This research focuses on the co-combustion of low-quality local coal with RDF as a mean to reduce environmental issues in terms of waste management strategy. The combustion characteristics and kinetics of coal, RDF, and their blends were experimentally investigated in a micro-thermal gravimetric analyzer at four heating rates of 10, 20, 30, and 40 °C/min to ramp the temperature from 25 °C to 1000 °C. The mass percentages of RDF in the coal blends were 10%, 20%, 30%, and 40%, respectively. The results show that as the RDF in blends increases, the reactivity of the blends increases, resulting in lower ignition temperatures and a shift in peak and burnout temperatures to a lower temperature zone. This indicates that there was certain interaction during the combustion process of coal and RDF. The activation energies of the samples were calculated using kinetic analysis based on Kissinger–Akahira–Sunnose (KAS) and Flynn–Wall–Ozawa (FWO), isoconversional methods. Both of the methods have produced closer results with average activation energy between 95–121 kJ/mol. With a 30% refuse-derived fuel proportion, the average activation energy of blends hit a minimum value of 95 kJ/mol by KAS method and 103 kJ/mol by FWO method.

Suggested Citation

  • Mudassar Azam & Asma Ashraf & Saman Setoodeh Jahromy & Sajjad Miran & Nadeem Raza & Florian Wesenauer & Christian Jordan & Michael Harasek & Franz Winter, 2021. "Co-Combustion Studies of Low-Rank Coal and Refuse-Derived Fuel: Performance and Reaction Kinetics," Energies, MDPI, vol. 14(13), pages 1-13, June.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:13:p:3796-:d:581287
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    References listed on IDEAS

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    2. Lu, Jau-Jang & Chen, Wei-Hsin, 2015. "Investigation on the ignition and burnout temperatures of bamboo and sugarcane bagasse by thermogravimetric analysis," Applied Energy, Elsevier, vol. 160(C), pages 49-57.
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    Cited by:

    1. Jaroslaw Krzywanski & Wojciech Nowak & Karol Sztekler, 2022. "Novel Combustion Techniques for Clean Energy," Energies, MDPI, vol. 15(13), pages 1-3, June.

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