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Pyrolysis char derived from waste peat for catalytic reforming of tar model compound

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  • Wang, Shuxiao
  • Shan, Rui
  • Lu, Tao
  • Zhang, Yuyuan
  • Yuan, Haoran
  • Chen, Yong

Abstract

The pyrolysis char derived from solid waste peat was used in the removal of biomass tar. A laboratory dual-stage reactor was designed to obtain a cost-effective and eco-friendly tar removal approach using peat pyrolysis char-based catalyst. Rich pore structure of pyrolysis char can enhance the adsorption and removal performance of tar, the KOH and CO2 activation method were used to increase the pore structure of pyrolysis char. Toluene was chosen as the model compound of biomass tar for basic research. The effects of pyrolysis char and transition metal Fe on toluene removal were studied. The investigated reforming parameters were reaction temperature (700–900 °C), residence time (0.3–0.8 s) and steam-to-carbon ratio (1.5:1–4:1). The results indicated that the peat pyrolysis char-based Fe catalysts showed excellent catalytic performance (toluene conversion >89%) and gas selectivity, especially the catalyst that activated by CO2 had the best selectivity for syngas (88.1 mol%), and the waste peat catalyst was compared with other waste pyrolysis char-based catalysts. Textural characterization showed that the excellent catalytic activity and stability of the catalysts are due to the presence of FeC and FeSiO3 structures. Such the peat pyrolysis char can as a carrier be used to remove tar and produce high content syngas in pyrolysis process.

Suggested Citation

  • Wang, Shuxiao & Shan, Rui & Lu, Tao & Zhang, Yuyuan & Yuan, Haoran & Chen, Yong, 2020. "Pyrolysis char derived from waste peat for catalytic reforming of tar model compound," Applied Energy, Elsevier, vol. 263(C).
    • Handle: RePEc:eee:appene:v:263:y:2020:i:c:s0306261920300775
    DOI: 10.1016/j.apenergy.2020.114565
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    1. Gu, Jing & Wang, Shuxiao & Lu, Tao & Wu, Yufeng & Yuan, Haoran & Chen, Yong, 2020. "Synthesis and evaluation of pyrolysis waste peat char supported catalyst for steam reforming of toluene," Renewable Energy, Elsevier, vol. 160(C), pages 964-973.
    2. Wang, Shuxiao & Zhang, Yuyuan & Shan, Rui & Gu, Jing & Yuan, Haoran & Chen, Yong, 2022. "Steam reforming of biomass tar model compound over two waste char-based Ni catalysts for syngas production," Energy, Elsevier, vol. 246(C).
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    4. Choi, Min-Jun & Jeong, Yong-Seong & Kim, Joo-Sik, 2021. "Air gasification of polyethylene terephthalate using a two-stage gasifier with active carbon for the production of H2 and CO," Energy, Elsevier, vol. 223(C).

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