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Two-stage air gasification of mixed plastic waste: Olivine as the bed material and effects of various additives and a nickel-plated distributor on the tar removal

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  • Cho, Min-Hwan
  • Mun, Tae-Young
  • Choi, Young-Kon
  • Kim, Joo-Sik

Abstract

Air gasification of mixed plastic waste was conducted in a two-stage gasifier. The effects of the combination of olivine as the fluidized bed material and activated carbon with or without other additives for tar cracking, as well as a Ni-plated distributor, the use of steam as a gasifying agent, and the calcination of olivine on the producer gas compositions and tar production, were also investigated. The maximum H2 concentration (27.3 vol%) was obtained with 900 g of activated carbon in the tar-cracking zone, and through the use of calcined olivine as the bed material. In the experiments, the maximum tar removal efficiency calculated using a base case reached 98.2%. The LHVs of the producer gases were in the range of 6.1–9.0 MJ/Nm3. The increase in the activated carbon amount led to an enhanced H2 production, as well as a decrease in tar production. The Ni-plated distributor was found to be effective for tar removal. In the application of dolomite in the tar-cracking zone and the use of steam as a fluidizing medium resulted in a high rate of HCl removal. The minimum HCl concentration in the producer gases was under 1 ppm.

Suggested Citation

  • Cho, Min-Hwan & Mun, Tae-Young & Choi, Young-Kon & Kim, Joo-Sik, 2014. "Two-stage air gasification of mixed plastic waste: Olivine as the bed material and effects of various additives and a nickel-plated distributor on the tar removal," Energy, Elsevier, vol. 70(C), pages 128-134.
    • Handle: RePEc:eee:energy:v:70:y:2014:i:c:p:128-134
    DOI: 10.1016/j.energy.2014.03.097
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    References listed on IDEAS

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    Cited by:

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    4. M. Shahabuddin & Tanvir Alam, 2022. "Gasification of Solid Fuels (Coal, Biomass and MSW): Overview, Challenges and Mitigation Strategies," Energies, MDPI, vol. 15(12), pages 1-20, June.
    5. Jeong, Yong-Seong & Choi, Young-Kon & Kim, Joo-Sik, 2019. "Three-stage air gasification of waste polyethylene: In-situ regeneration of active carbon used as a tar removal additive," Energy, Elsevier, vol. 166(C), pages 335-342.
    6. David Antonio Buentello-Montoya & Miguel Ángel Armenta-Gutiérrez & Victor Manuel Maytorena-Soria, 2023. "Parametric Modelling Study to Determine the Feasibility of the Co-Gasification of Macroalgae and Plastics for the Production of Hydrogen-Rich Syngas," Energies, MDPI, vol. 16(19), pages 1-18, September.
    7. Chen, Zhijie & Wei, Wei & Chen, Xueming & Liu, Yiwen & Shen, Yansong & Ni, Bing-Jie, 2024. "Upcycling of plastic wastes for hydrogen production: Advances and perspectives," Renewable and Sustainable Energy Reviews, Elsevier, vol. 195(C).
    8. Choi, Young-Kon & Cho, Min-Hwan & Kim, Joo-Sik, 2015. "Steam/oxygen gasification of dried sewage sludge in a two-stage gasifier: Effects of the steam to fuel ratio and ash of the activated carbon on the production of hydrogen and tar removal," Energy, Elsevier, vol. 91(C), pages 160-167.
    9. Cho, Min-Hwan & Choi, Young-Kon & Kim, Joo-Sik, 2015. "Air gasification of PVC (polyvinyl chloride)-containing plastic waste in a two-stage gasifier using Ca-based additives and Ni-loaded activated carbon for the production of clean and hydrogen-rich prod," Energy, Elsevier, vol. 87(C), pages 586-593.
    10. Ichiro Tsuchimoto & Yuya Kajikawa, 2022. "Recycling of Plastic Waste: A Systematic Review Using Bibliometric Analysis," Sustainability, MDPI, vol. 14(24), pages 1-39, December.

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