Effects of Microwave Torrefaction with Mg(OH)2 on Characteristics of Bio-oil from Co-pyrolysis of Straw Stalk and Soapstock

Pingwei Wen, Yue Zhou, Leilei Dai, Yunpu Wang, Yuhuan Liu, Roger Ruan

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

This study investigated the effects of torrefaction with Mg(OH)2 on the properties of bio-oil formed from the microwave-assisted catalytic fast co-pyrolysis of straw stalk and soapstock. The effects of torrefaction temperature and residence time on the yield and composition of bio-oil were discussed. Results showed that the torrefaction temperature and residence time remarkably influenced the yield and composition of bio-oil. With the increase in temperature and time, the bio-oil yield and the proportion of oxygen-containing compounds decreased, while the proportion of aromatic compounds increased. When the feedstocks were subject to torrefaction reaction for 20 min at 260 °C, the proportion of oxygen-containing compounds decreased from 29.89% to 16.49%. Meanwhile, Mg(OH)2 could render the deoxidization function of torrefaction process increasingly noticeable. The proportion of the oxygen-containing compounds reached a minimum (14.41%), when the biomass-to-Mg(OH)2 ratio was 1:1.

Original languageEnglish (US)
Pages (from-to)10-16
Number of pages7
JournalChina Petroleum Processing and Petrochemical Technology
Volume21
Issue number3
StatePublished - Sep 30 2019

Bibliographical note

Publisher Copyright:
© 2019 Research Institute of Petroleum Processing, SINOPEC. All rights reserved.

Keywords

  • Mg(OH)
  • bio-oil
  • microwave torrefaction
  • soapstock
  • straw stalk

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