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Multi-stage reactor for thermal gasification of wood

Author

Listed:
  • Bui, T.
  • Loof, R.
  • Bhattacharya, S.C.

Abstract

Tar is the most undesirable contaminant of producer gas. Production of tar-free gas from uncarbonized biomass seems to be rather elusive, and removing tar from the gas remains a daunting task requiring bulky, expensive equipment and considerable operational effort. A new multi-stage reactor design has been developed in order to separate the flaming-pyrolysis zone from the reduction zone. Tar vapors generated in the first zone are burned or cracked to simple molecules by high temperature in the second zone. Data obtained from experimental tests show that the two-stage reactor has improved gas quality and conversion efficiency. The tar content of the gas is about 40 times less than that obtained with a single-stage reactor under similar operating conditions.

Suggested Citation

  • Bui, T. & Loof, R. & Bhattacharya, S.C., 1994. "Multi-stage reactor for thermal gasification of wood," Energy, Elsevier, vol. 19(4), pages 397-404.
    • Handle: RePEc:eee:energy:v:19:y:1994:i:4:p:397-404
    DOI: 10.1016/0360-5442(94)90118-X
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    1. Machin, Einara Blanco & Pedroso, Daniel Travieso & Proenza, Nestor & Silveira, José Luz & Conti, Leonetto & Braga, Lúcia Bollini & Machin, Adrian Blanco, 2015. "Tar reduction in downdraft biomass gasifier using a primary method," Renewable Energy, Elsevier, vol. 78(C), pages 478-483.
    2. Rahman, MD Mashiur & Henriksen, Ulrik Birk & Ahrenfeldt, Jesper & Arnavat, Maria Puig, 2020. "Design, construction and operation of a low-tar biomass (LTB) gasifier for power applications," Energy, Elsevier, vol. 204(C).
    3. La Villetta, M. & Costa, M. & Massarotti, N., 2017. "Modelling approaches to biomass gasification: A review with emphasis on the stoichiometric method," Renewable and Sustainable Energy Reviews, Elsevier, vol. 74(C), pages 71-88.
    4. Ma, Zhongqing & Zhang, Yimeng & Zhang, Qisheng & Qu, Yongbiao & Zhou, Jianbin & Qin, Hengfei, 2012. "Design and experimental investigation of a 190 kWe biomass fixed bed gasification and polygeneration pilot plant using a double air stage downdraft approach," Energy, Elsevier, vol. 46(1), pages 140-147.
    5. Čespiva, Jakub & Wnukowski, Mateusz & Niedzwiecki, Lukasz & Skřínský, Jan & Vereš, Ján & Ochodek, Tadeáš & Pawlak-Kruczek, Halina & Borovec, Karel, 2020. "Characterization of tars from a novel, pilot scale, biomass gasifier working under low equivalence ratio regime," Renewable Energy, Elsevier, vol. 159(C), pages 775-785.
    6. Halina Pawlak-Kruczek & Mateusz Wnukowski & Lukasz Niedzwiecki & Michał Czerep & Mateusz Kowal & Krystian Krochmalny & Jacek Zgóra & Michał Ostrycharczyk & Marcin Baranowski & Wilhelm Jan Tic & Joanna, 2019. "Torrefaction as a Valorization Method Used Prior to the Gasification of Sewage Sludge," Energies, MDPI, vol. 12(1), pages 1-18, January.
    7. Min, T.J. & Yoshikawa, K. & Murakami, K., 2005. "Distributed gasification and power generation from solid wastes," Energy, Elsevier, vol. 30(11), pages 2219-2228.
    8. Thuan Duc Mai & Tamás Koós & Emese Sebe & Zoltán Siménfalvi & András Arnold Kállay, 2023. "Efficiency Enhancement of the Single Line Multi-Stage Gasification of Hungarian Low-Rank Coal: Effects of Gasification Temperature and Steam/Carbon (S/C) Ratio," Energies, MDPI, vol. 16(11), pages 1-16, May.
    9. Sharma, Avdhesh Kr., 2009. "Experimental study on 75kWth downdraft (biomass) gasifier system," Renewable Energy, Elsevier, vol. 34(7), pages 1726-1733.
    10. James Daniell & Michael Köpke & Séan Dennis Simpson, 2012. "Commercial Biomass Syngas Fermentation," Energies, MDPI, vol. 5(12), pages 1-46, December.
    11. Tejasvi Sharma & Diego M. Yepes Maya & Francisco Regis M. Nascimento & Yunye Shi & Albert Ratner & Electo E. Silva Lora & Lourival Jorge Mendes Neto & Jose Carlos Escobar Palacios & Rubenildo Vieira A, 2018. "An Experimental and Theoretical Study of the Gasification of Miscanthus Briquettes in a Double-Stage Downdraft Gasifier: Syngas, Tar, and Biochar Characterization," Energies, MDPI, vol. 11(11), pages 1-23, November.
    12. Mendiburu, Andrés Z. & Carvalho, João A. & Coronado, Christian J.R., 2014. "Thermochemical equilibrium modeling of biomass downdraft gasifier: Stoichiometric models," Energy, Elsevier, vol. 66(C), pages 189-201.
    13. Pang, Yunji & Yang, Chen & Wu, Yuting & Chen, Yisheng & Li, Huan, 2022. "Study on counter-flow steam gasification characteristics of biochar with Fe2O3/CaO in-situ catalysis in fixed bed," Applied Energy, Elsevier, vol. 326(C).
    14. Asadullah, Mohammad, 2014. "Biomass gasification gas cleaning for downstream applications: A comparative critical review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 40(C), pages 118-132.
    15. Yamasaki, Yudai & Kanno, Masanobu & Suzuki, Yoshitaka & Kaneko, Shigehiko, 2013. "Development of an engine control system using city gas and biogas fuel mixture," Applied Energy, Elsevier, vol. 101(C), pages 465-474.

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