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Coupling effect of the refuse and sludge on the physical and combustible properties of the densified pellets for energy production

Author

Listed:
  • Fang, Jinlong
  • He, Jun
  • Hong, Yubin
  • Luo, Zijun
  • Ke, Huapeng
  • Fan, Zixuan
  • Tang, Oujun
  • Diao, Zenghui
  • Chen, Diyun
  • Lingjun, Kong

Abstract

Recycling and converting the loose refuse and sludge into densified fuels (S-RDF) is promising for energy production, in which the sludge could be a suitable binder that can be combusted adequately for treatment. The increase in the sludge content and compress pressure positively influenced the physical properties of the S-RDF. Especially, the S-RDF with a mass content of 20% of sludge performed the favorable density of 1.2 g/cm3 and featured an abrasive resistance of 6.542% when the pressure was only 1 MPa, being similar to the RDF being compressed at 4 MPa without sludge. Also, it can be pelletized on industrial scale with a power of 7.5 KW. The results confirmed the positive effect of the sludge on the physical properties of RDF. S-RDF has a high calorific value of 2.25 × 104 kJ/dm3, and the ignition loss of S-RDF slag is low to 2% due to the promoting combustion of sludge by flammable waste. Thus, it is promising to facilitate the recycling and conversion of refuse and sludge into energy to address sustainable development.

Suggested Citation

  • Fang, Jinlong & He, Jun & Hong, Yubin & Luo, Zijun & Ke, Huapeng & Fan, Zixuan & Tang, Oujun & Diao, Zenghui & Chen, Diyun & Lingjun, Kong, 2023. "Coupling effect of the refuse and sludge on the physical and combustible properties of the densified pellets for energy production," Renewable Energy, Elsevier, vol. 216(C).
    • Handle: RePEc:eee:renene:v:216:y:2023:i:c:s0960148123009953
    DOI: 10.1016/j.renene.2023.119081
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    References listed on IDEAS

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    1. Kong, Lingjun & Tian, ShuangHong & He, Chun & Du, Changming & Tu, YuTing & Xiong, Ya, 2012. "Effect of waste wrapping paper fiber as a “solid bridge” on physical characteristics of biomass pellets made from wood sawdust," Applied Energy, Elsevier, vol. 98(C), pages 33-39.
    2. Li, Wei & Yuan, Zhihang & Chen, Xiaoliang & Wang, Hui & Wang, Luochun & Lou, Ziyang, 2021. "Green refuse derived fuel preparation and combustion performance from the solid residues to build the zero-waste city," Energy, Elsevier, vol. 225(C).
    3. Zamorano, M. & Popov, V. & Rodríguez, M.L. & García-Maraver, A., 2011. "A comparative study of quality properties of pelletized agricultural and forestry lopping residues," Renewable Energy, Elsevier, vol. 36(11), pages 3133-3140.
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