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Combustion Melting Characterisation of Solid Fuel Obtained from Sewage Sludge

Author

Listed:
  • Dongju Kim

    (Plant Engineering Center, Institute for Advanced Engineering, Yongin 17180, Korea)

  • Dong-kyoo Park

    (Plant Engineering Center, Institute for Advanced Engineering, Yongin 17180, Korea)

  • Yong-taek Lim

    (Plant Engineering Center, Institute for Advanced Engineering, Yongin 17180, Korea)

  • Soo-nam Park

    (Plant Engineering Center, Institute for Advanced Engineering, Yongin 17180, Korea)

  • Yeong-Su Park

    (Plant Engineering Center, Institute for Advanced Engineering, Yongin 17180, Korea)

  • Kyunghyun Kim

    (Department of Research Institute, Jinenertech Co., Ltd., Cheongyang 33317, Korea)

Abstract

Solid fuelization technology can increase the heating value of sewage sludge such that it can be utilised as a fossil fuel substitutes. Reducing landfilling of bottom and fly ash resulting from heavy metals contained in sewage sludge is challenging. Hence, combustion melting technology (CMT), which can discharge bottom ash in the form of slag, has been proposed herein as an alternative to the conventional incineration technology. However, further research is required to improve the flowability of slag. Applicability of CMT for the stable treatment of heavy metals in the ash generated during the energisation of sewage sludge solid fuel has been reviewed. The change in the degree of fluidity was identified via a laboratory-scale fluidity measurement experiment following changes in melting temperature, mixing ratio of sewage sludge and sawdust, and basicity. The pouring index (PI) of sewage sludge solid fuel (pellet) was maintained at a level of about 60% at a basicity index of 0.8. Based on the results, the slagging rates and volume reduction rates, exhaust gas analysis, and heavy metal elution characteristics under oxygen enrichment were derived from a 2 ton/day combustion melting pilot plant experiment; thereafter, the feasibility of combustion melting of sewage sludge solid fuel was determined.

Suggested Citation

  • Dongju Kim & Dong-kyoo Park & Yong-taek Lim & Soo-nam Park & Yeong-Su Park & Kyunghyun Kim, 2021. "Combustion Melting Characterisation of Solid Fuel Obtained from Sewage Sludge," Energies, MDPI, vol. 14(4), pages 1-18, February.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:4:p:805-:d:492601
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    References listed on IDEAS

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    1. Zhao, Zhenghui & Wang, Ruikun & Wu, Junhong & Yin, Qianqian & Wang, Chunbo, 2019. "Bottom ash characteristics and pollutant emission during the co-combustion of pulverized coal with high mass-percentage sewage sludge," Energy, Elsevier, vol. 171(C), pages 809-818.
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    Cited by:

    1. Izabella Maj, 2022. "Significance and Challenges of Poultry Litter and Cattle Manure as Sustainable Fuels: A Review," Energies, MDPI, vol. 15(23), pages 1-17, November.
    2. Rolandas Paulauskas & Kęstutis Zakarauskas & Nerijus Striūgas, 2021. "An Intensification of Biomass and Waste Char Gasification in a Gasifier," Energies, MDPI, vol. 14(7), pages 1-11, April.
    3. Li Ma & Li Sha & Xingxin Liu & Shuting Zhang, 2021. "Study of Molding and Drying Characteristics of Compressed Municipal Sludge-Corn Stalk Fuel Pellets," Energies, MDPI, vol. 14(11), pages 1-15, May.

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