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Mechanistic Determination of the Role of Aluminum in Particle Adhesiveness at High Temperatures Induced by Sodium and Potassium Using a Synthetic Ash Strategy

  • Genki Horiguchi
    Genki Horiguchi
    Department of Chemical Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo 184-8588, Japan
  • Yuta Beppu
    Yuta Beppu
    Department of Chemical Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo 184-8588, Japan
    More by Yuta Beppu
  • Kentaro Yoshinaga
    Kentaro Yoshinaga
    Department of Chemical Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo 184-8588, Japan
  • Hidehiro Kamiya
    Hidehiro Kamiya
    Department of Chemical Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo 184-8588, Japan
  • , and 
  • Yohei Okada*
    Yohei Okada
    Department of Chemical Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo 184-8588, Japan
    *Email: [email protected]
    More by Yohei Okada
Cite this: ACS Sustainable Chem. Eng. 2021, 9, 10, 3727–3734
Publication Date (Web):February 24, 2021
https://doi.org/10.1021/acssuschemeng.0c08483
Copyright © 2021 American Chemical Society

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    Abstract

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    Energy recovery from various fuels with high efficiency is an important objective to realize sustainable energy conversion systems. During the combustion process, ash particles are produced that can form aggregates inside of combustion plants, which inhibit stable and effective plant operation. This is a serious problem for plant operation, and the control of ash particle aggregation under high-temperature conditions is an important objective. In this research, a method to effectively suppress the adhesiveness of particles at high temperatures is proposed based on a synthetic ash strategy. Synthetic ashes were prepared from a base material with sodium (Na) or potassium (K) as target elements to induce adhesiveness. The base material included both silicon (Si) and aluminum (Al). The tensile strengths of powder beds of the prepared synthetic ash with various alkali concentrations were measured at high temperatures, by which it was confirmed that Na could induce higher adhesiveness than K at low alkali concentrations. This difference was ascribed to the presence of Al. The role of Al in particle adhesiveness was clarified by control of the Al concentration through the addition of aluminum oxide (Al2O3) nanoparticles, and the ratio of alkali to Al (Na/Al or K/Al) had an effect on particle adhesiveness at high temperatures, that is, the particle adhesiveness could be suppressed by a decrease of these ratios.

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    The Supporting Information is available free of charge at https://pubs.acs.org/doi/10.1021/acssuschemeng.0c08483.

    • Characterization of materials and synthetic ashes, tensile strength measurements, thermodynamic and theoretical calculations, characterization of synthetic ashes with Al2O3 or SiO2 nanoparticles, and thermodynamic calculations for Al2O3 or SiO2 addition (PDF)

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    Cited By

    This article is cited by 10 publications.

    1. Genki Horiguchi, Tatsuya Okuizumi, Hidehiro Kamiya, Yohei Okada. Phosphorus-Related Ash Chemistry at High Temperatures: Role of Aluminum on Particle Adhesion. ACS Sustainable Chemistry & Engineering 2024, 12 (11) , 4655-4661. https://doi.org/10.1021/acssuschemeng.3c08419
    2. Tatsuya Okuizumi, Genki Horiguchi, Hidehiro Kamiya, Yohei Okada. Role of Al-Based Additives in Controlling Ash Adhesion. Energy & Fuels 2024, 38 (3) , 2319-2326. https://doi.org/10.1021/acs.energyfuels.3c03942
    3. Nanami Aoki, Genki Horiguchi, Hidehiro Kamiya, Yohei Okada. Shear Strength Testing of Synthetic Ash: The Role of Surface vs Interparticle Adhesions. Industrial & Engineering Chemistry Research 2022, 61 (9) , 3358-3364. https://doi.org/10.1021/acs.iecr.1c04308
    4. Genki Horiguchi, Masahiro Ito, Atsuki Ito, Hidehiro Kamiya, Yohei Okada. Role of Phosphorus and Iron in Particle Adhesiveness at High Temperatures Using Synthetic Ashes. ACS Sustainable Chemistry & Engineering 2021, 9 (45) , 15315-15321. https://doi.org/10.1021/acssuschemeng.1c05676
    5. Masahiro Ito, Koichiro Tone, Genki Horiguchi, Takami Koseki, Hidehiro Kamiya, Yohei Okada. Understanding particle adhesion of sewage sludge incineration ash at high temperatures: Effect of physical characteristics. Journal of the Energy Institute 2024, 115 , 101691. https://doi.org/10.1016/j.joei.2024.101691
    6. Tsuyoshi Fujimoto, Genki Horiguchi, Hidehiro Kamiya, Yohei Okada. Understanding adhesion induced by calcium compounds at 900 °C using model particles. Powder Technology 2024, 8 , 120008. https://doi.org/10.1016/j.powtec.2024.120008
    7. Genki HORIGUCHI. Investigation of Additives to Control Ash Adhesion at High Temperatures. Hosokawa Powder Technology Foundation ANNUAL REPORT 2024, 31 (0) , 134-139. https://doi.org/10.14356/hptf.21120
    8. Genki Horiguchi, Masahiro Ito, Atsuki Ito, Hidehiro Kamiya, Yohei Okada. Controlling particle adhesion of synthetic and sewage sludge ashes in high temperature combustion using metal oxide nanoparticles. Fuel 2022, 321 , 124110. https://doi.org/10.1016/j.fuel.2022.124110
    9. Genki Horiguchi, Tsuyoshi Fujimoto, Kentaro Yoshinaga, Yohei Okada, Hidehiro Kamiya. Particle adhesion induced by calcium carbonate nanoparticles at 900 °C. Powder Technology 2022, 405 , 117514. https://doi.org/10.1016/j.powtec.2022.117514
    10. Congwei Tang, Weiguo Pan, Jiakai Zhang, Wenhuan Wang, Xiaoli Sun. A comprehensive review on efficient utilization methods of High-alkali coals combustion in boilers. Fuel 2022, 316 , 123269. https://doi.org/10.1016/j.fuel.2022.123269