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Biomass Chemical Engineering ›› 2021, Vol. 55 ›› Issue (4): 29-33.doi: 10.3969/j.issn.1673-5854.2021.04.005

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Fast Pyrolysis Experiments of Corn Stalk by Py-GC/MS

Zhichao LIU(), Yanyan WANG, Fangdong ZHENG, Di WAN   

  1. Shanghai Minghua Electric Power Science & Technology Co., Ltd., Shanghai 200090, China
  • Received:2020-07-14 Online:2021-07-30 Published:2021-07-10


Fast pyrolysis experiments were studied by using pyrolysis-gas chromatography/mass spectrometry(Py-GC/MS) under different pyrolysis conditions with corn stalk as material, and the pyrolysis gases were online analyzed. The effects of pyrolysis time, pyrolytic temperature and ZSM-5 catalyst on the pyrolysis characteristics and distribution of pyrolysis products of corn stalk were focused. The experimental results showed that the higher pyrolysis temperature was, the more fully pyrolysis reaction would be, and the pyrolysis products of 550℃ had the highest quality, the content of aromatic compound was the maximum(28.3%). Pyrolysis reaction constantly intensified with the increase of pyrolysis time, and the pyrolysis products of 10 s had the highest quality, the content of ketones was the minimum(11.8%) and the content of aromatic compound was the maximum(28.3%); ZSM-5 catalyst could significantly promote the polycondensation reaction to generate benzene ring in the secondary reactions, and could also promote a series of aromatization reactions, remove oxygen out of oxygen species of aromatic compounds, generate a large number of aromatic hydrocarbons. So ZSM-5 catalyst had good performance of catalytic deoxidization, and it could effectively improve the quality of the pyrolysis products.

Key words: corn stalk, Py-GC/MS, pyrolysis time, pyrolysis temperature, ZSM-5 catalyst

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