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Effect of Cu(NO 3 ) 2 and Cu(CH 3 COO) 2 Activating Additives on Combustion Characteristics of Anthracite and Its Semi-Coke

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  • Kirill Larionov

    (School of Energy & Power Engineering, National Research Tomsk Polytechnic University, 634050 Tomsk, Russia
    Laboratory of Catalysis and Processing of Hydrocarbons, National University of Science and Technology “MISIS”, 119049 Moscow, Russia)

  • Konstantin Slyusarskiy

    (School of Energy & Power Engineering, National Research Tomsk Polytechnic University, 634050 Tomsk, Russia
    Laboratory of Catalysis and Processing of Hydrocarbons, National University of Science and Technology “MISIS”, 119049 Moscow, Russia)

  • Svyatoslav Tsibulskiy

    (School of Energy & Power Engineering, National Research Tomsk Polytechnic University, 634050 Tomsk, Russia)

  • Anton Tolokolnikov

    (School of Energy & Power Engineering, National Research Tomsk Polytechnic University, 634050 Tomsk, Russia)

  • Ilya Mishakov

    (Laboratory of Catalysis and Processing of Hydrocarbons, National University of Science and Technology “MISIS”, 119049 Moscow, Russia
    Department of Materials Science and Functional Materials, Boreskov Institute of Catalysis SB RAS, 630090 Novosibirsk, Russia)

  • Yury Bauman

    (Laboratory of Catalysis and Processing of Hydrocarbons, National University of Science and Technology “MISIS”, 119049 Moscow, Russia
    Department of Materials Science and Functional Materials, Boreskov Institute of Catalysis SB RAS, 630090 Novosibirsk, Russia)

  • Aleksey Vedyagin

    (Laboratory of Catalysis and Processing of Hydrocarbons, National University of Science and Technology “MISIS”, 119049 Moscow, Russia
    Department of Materials Science and Functional Materials, Boreskov Institute of Catalysis SB RAS, 630090 Novosibirsk, Russia)

  • Alexander Gromov

    (Laboratory of Catalysis and Processing of Hydrocarbons, National University of Science and Technology “MISIS”, 119049 Moscow, Russia)

Abstract

The process of anthracite and its semi-coke combustion in the presence of 5 wt.% (in terms of dry salt) additives of copper salts Cu(NO 3 ) 2 and Cu(CH 3 COO) 2 was studied. The activating additives were introduced by an incipient wetness procedure. The ignition and combustion parameters for coal samples were examined in the combustion chamber at the heating medium temperatures (T g ) of 600–800 °C. The composition of the gaseous combustion products was controlled using an on-line gas analyzer. The fuel modification with copper salts was found to reduce the ignition delay time on average, along with a drop in the minimum ignition temperature T min by 138–277 °C. With an increase in T g temperature, a significant reduction in the ignition delay time for the anthracite and semi-coke samples (by a factor of 6.7) was observed. The maximum difference in the ignition delay time between the original and modified samples of anthracite (ΔT i = 5.5 s) and semi-coke (ΔT i = 5.4 s) was recorded at a T g temperature of 600 °C in the case of Cu(CH 3 COO) 2 . The emergence of micro-explosions was detected at an early stage of combustion via high-speed video imaging for samples modified by copper acetate. According to the on-line gas analysis data, the addition of copper salts permits one to reduce the volume of CO formed by 40% on average, providing complete oxidation of the fuel to CO 2 . It was shown that the introduction of additives promoted the reduction in the NO x emissions during the combustion of the anthracite and semi-coke samples.

Suggested Citation

  • Kirill Larionov & Konstantin Slyusarskiy & Svyatoslav Tsibulskiy & Anton Tolokolnikov & Ilya Mishakov & Yury Bauman & Aleksey Vedyagin & Alexander Gromov, 2020. "Effect of Cu(NO 3 ) 2 and Cu(CH 3 COO) 2 Activating Additives on Combustion Characteristics of Anthracite and Its Semi-Coke," Energies, MDPI, vol. 13(22), pages 1-14, November.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:22:p:5926-:d:444689
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    References listed on IDEAS

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    1. Gong, Xuzhong & Guo, Zhancheng & Wang, Zhi, 2010. "Variation on anthracite combustion efficiency with CeO2 and Fe2O3 addition by Differential Thermal Analysis (DTA)," Energy, Elsevier, vol. 35(2), pages 506-511.
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