Microwave-assisted catalytic fast pyrolysis coupled with microwave-absorbent of soapstock for bio-oil in a downdraft reactor

Yunpu Wang, Qiuhao Wu, Sha Yang, Qi Yang, Junlin Wu, Zhiyun Ma, Lin Jiang, Zhenting Yu, Leilei Dai, Yuhuan Liu, Roger Ruan, Guiming Fu, Bo Zhang, Haibin Zhu

Research output: Contribution to journalArticle

25 Scopus citations

Abstract

Microwave-assisted pyrolysis of biomass with HZSM-5 coupled with SiC as microwave-absorbent in a downdraft reactor is a promising method for obtaining hydrocarbon-rich bio-oil. The hydrocarbon content limits the economic and commercial viability of the bio-oil produced by pyrolysis. In this study, the effects of catalytic temperature, feedstock-to-catalyst ratio, and WHSV on the yield and composition of bio-oil are studied. In addition, this study compared the influence of downdraft reaction and updraft reaction on the yield and composition of bio-oil. Furthermore, the stability of the catalyst is studied. Catalytic temperature and feedstock-to-catalyst ratio played pivotal roles in the yield and composition of bio-oil. WHSV has minimal influence on the bio-oil yield and composition within the scope of our research. Furthermore, the optimal catalytic temperature, feedstock-to-catalyst ratio and WHSV were 400 °C, 2:1, and 72 h−1, respectively. The results illustrated that the downdraft coupled with the microwave-absorbent was conducive to the formation of aromatic hydrocarbons. The HZSM-5 performed well in five replicate experimental cycles under optimal conditions in terms of bio-oil yield and aromatic hydrocarbon yield.

Original languageEnglish (US)
Pages (from-to)11-20
Number of pages10
JournalEnergy Conversion and Management
Volume185
DOIs
StatePublished - Apr 1 2019

Keywords

  • Downdraft reactor
  • HZSM-5 catalyst
  • Microwave-absorbent bed
  • Microwave-assisted pyrolysis
  • Soapstock

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    Wang, Y., Wu, Q., Yang, S., Yang, Q., Wu, J., Ma, Z., Jiang, L., Yu, Z., Dai, L., Liu, Y., Ruan, R., Fu, G., Zhang, B., & Zhu, H. (2019). Microwave-assisted catalytic fast pyrolysis coupled with microwave-absorbent of soapstock for bio-oil in a downdraft reactor. Energy Conversion and Management, 185, 11-20. https://doi.org/10.1016/j.enconman.2019.01.101