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Tar reduction in biomass syngas using heat exchanger and vegetable oil bubbler

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  • Thapa, Sunil
  • Indrawan, Natarianto
  • Bhoi, Prakashbhai R.
  • Kumar, Ajay
  • Huhnke, Raymond L.

Abstract

A heat exchanger and vegetable oil bubbling system was designed and tested for biomass-generated syngas cooling and cleaning. The fully enclosed heat exchanger contained water at 15 °C, with syngas having to travel 35 m3/s. Using canola oil, the bubbler was tested at 70 and 100 mm oil depths and 5 and 10 mm syngas bubble sizes to determine the effect of tar removal. The results showed that tar removal efficiency was significantly affected by oil depth and bubble size; however, the interaction between bubble size and oil depth was not significant. About 60% of tars was removed by the heat exchanger alone and 96% of the remaining tars was removed by the oil bubbler when used in series with the heat exchanger. Overall, tar reduction efficiency of 98.5% was achieved with the heat exchanger plus oil bubbler having oil depth of 100 mm and syngas bubble size of 5 mm. Heat exchanger removed most of the tars by cooling the syngas below its dew point but syngas tars with low dew point was absorbed in the oil bubbler.

Suggested Citation

  • Thapa, Sunil & Indrawan, Natarianto & Bhoi, Prakashbhai R. & Kumar, Ajay & Huhnke, Raymond L., 2019. "Tar reduction in biomass syngas using heat exchanger and vegetable oil bubbler," Energy, Elsevier, vol. 175(C), pages 402-409.
    • Handle: RePEc:eee:energy:v:175:y:2019:i:c:p:402-409
    DOI: 10.1016/j.energy.2019.03.045
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    References listed on IDEAS

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    1. Anis, Samsudin & Zainal, Z.A., 2011. "Tar reduction in biomass producer gas via mechanical, catalytic and thermal methods: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 15(5), pages 2355-2377, June.
    2. Unyaphan, Siriwat & Tarnpradab, Thanyawan & Takahashi, Fumitake & Yoshikawa, Kunio, 2017. "Improvement of tar removal performance of oil scrubber by producing syngas microbubbles," Applied Energy, Elsevier, vol. 205(C), pages 802-812.
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    Cited by:

    1. Natarianto Indrawan & Betty Simkins & Ajay Kumar & Raymond L. Huhnke, 2020. "Economics of Distributed Power Generation via Gasification of Biomass and Municipal Solid Waste," Energies, MDPI, vol. 13(14), pages 1-18, July.
    2. Nicola Aldi & Nicola Casari & Michele Pinelli & Alessio Suman & Alessandro Vulpio, 2022. "Performance Degradation of a Shell-and-Tube Heat Exchanger Due to Tar Deposition," Energies, MDPI, vol. 15(4), pages 1-16, February.
    3. de Oliveira, Diego C. & Lora, Electo E.S. & Venturini, Osvaldo J. & Maya, Diego M.Y. & Garcia-Pérez, Manuel, 2023. "Gas cleaning systems for integrating biomass gasification with Fischer-Tropsch synthesis - A review of impurity removal processes and their sequences," Renewable and Sustainable Energy Reviews, Elsevier, vol. 172(C).
    4. Li, Jian & Tao, Junyu & Yan, Beibei & Jiao, Liguo & Chen, Guanyi & Hu, Jianli, 2021. "Review of microwave-based treatments of biomass gasification tar," Renewable and Sustainable Energy Reviews, Elsevier, vol. 150(C).
    5. Zhang, Xiaosong & Pan, Jiawei & Wang, Liang & Qian, Tianle & Zhu, Yuezhao & Sun, Hongqi & Gao, Jian & Chen, Haijun & Gao, Ying & Liu, Chang, 2019. "COSMO-based solvent selection and Aspen Plus process simulation for tar absorptive removal," Applied Energy, Elsevier, vol. 251(C), pages 1-1.

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