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Investigation of Pyrolysis Kinetic Triplet, Thermodynamics, Product Characteristics and Reaction Mechanism of Waste Cooking Oil Biodiesel under the Influence of Copper Slag

Author

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  • Tianhao Shen

    (Engineering Research of Metallurgy Energy Conservation & Emission Reduction, Ministry of Education, Kunming University of Science and Technology, Kunming 650093, China)

  • Fengxia Zhang

    (Engineering Research of Metallurgy Energy Conservation & Emission Reduction, Ministry of Education, Kunming University of Science and Technology, Kunming 650093, China
    Kunming Institute of Metallurgy, College of Metallurgy and Mining, Kunming 650033, China)

  • Shiliang Yang

    (Engineering Research of Metallurgy Energy Conservation & Emission Reduction, Ministry of Education, Kunming University of Science and Technology, Kunming 650093, China)

  • Hua Wang

    (Engineering Research of Metallurgy Energy Conservation & Emission Reduction, Ministry of Education, Kunming University of Science and Technology, Kunming 650093, China
    State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, China)

  • Jianhang Hu

    (Engineering Research of Metallurgy Energy Conservation & Emission Reduction, Ministry of Education, Kunming University of Science and Technology, Kunming 650093, China)

Abstract

WCO-Biodiesel can be used as a fuel instead of fossil energy for the copper smelting industry will not only save resources but also protect the environment. The pyrolysis of WCO-Biodiesel in the melting pool is influenced to some extent by the copper slag (CS) generated during the copper smelting process. In this study, the effects of CS on the kinetic triplet, thermodynamics, product characteristics and reaction mechanism of WCO-Biodiesel are comprehensively investigated via a thermogravimetric analyzer and pyrolysis experimental system. Firstly, the apparent activation energy (E α ) is calculated using STR, and E α decreased at different α under the influence of CS. Then, the trend of the WCO-Biodiesel pyrolysis mechanism with α is determined by the master plots method based on 18 commonly used models similar to the Pn and D1 models. The analysis of WCO-Biodiesel pyrolysis gas products shows that more flammable gases containing H are formed under the influence of CS. The analysis of the liquid products shows that more PAHs and more small molecule products are generated under the influence of CS. Two coke products are produced at high temperatures, which differ significantly in microscopic morphology, spherical carbon particle size and chemical structure. Finally, the mechanism of pyrolysis of the main components in WCO-Biodiesel in the high-temperature environment of melt pool melting is explored.

Suggested Citation

  • Tianhao Shen & Fengxia Zhang & Shiliang Yang & Hua Wang & Jianhang Hu, 2023. "Investigation of Pyrolysis Kinetic Triplet, Thermodynamics, Product Characteristics and Reaction Mechanism of Waste Cooking Oil Biodiesel under the Influence of Copper Slag," Energies, MDPI, vol. 16(5), pages 1-22, February.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:5:p:2137-:d:1077053
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    References listed on IDEAS

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