Thermogravimetric studies on the kinetics of rice hull pyrolysis and the influence of water treatment

Hsisheng Teng, Yun Chou Wei

研究成果: Article同行評審

149 引文 斯高帕斯(Scopus)

摘要

Rice hulls were pyrolyzed in a thermogravimetric analyzer in a helium atmosphere to determine the kinetic parameters of devolatilization reactions. The pyrolysis experiments were conducted by heating rice hulls from room temperature to 1173 K at constant heating rates of 3,10, 30, 60, and 100 K/min. The global mass loss during rice hull pyrolysis was successfully simulated by a combination of four independent parallel reactions, the decompositions of four major components in rice hulls: moisture, hemicellulose, cellulose, and lignin. The activation energy for the decomposition of the nonmoisture components was in the order cellulose hemicellulose > lignin. It was also found in the present study that the pyrolytic behaviors were significantly influenced by water wash-prior to pyrolysis. The water wash elevates the peak temperature and the activation energy for the decomposition of each component of rice hulls. The volatile yields resulting from cellulose and hemicellulose decompositions during rice hull pyrolysis increase due to the water treatment, whereas those from lignin decomposition and the char yield decrease.

原文English
頁(從 - 到)3806-3811
頁數6
期刊Industrial and Engineering Chemistry Research
37
發行號10
DOIs
出版狀態Published - 1998 一月 1

All Science Journal Classification (ASJC) codes

  • 化學 (全部)
  • 化學工程 (全部)
  • 工業與製造工程

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