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生物质化学工程 ›› 2007, Vol. 41 ›› Issue (4): 31-34.

• 研究报告 • 上一篇    下一篇

干燥前后花生壳的热解特性研究

王洪志, 刘朝   

  1. 重庆大学 动力工程学院, 重庆 400044
  • 收稿日期:2007-01-11 修回日期:1900-01-01 出版日期:2007-07-30 发布日期:2007-07-30
  • 通讯作者: 刘 朝(1962- ),男,浙江绍兴人,教授,博士生导师,研究方向为非平衡热力学理论及生物质利用研究;联系电话:023-65112469; E-mail:liuchao@cqu.edu.cn。

Study on Pyrolysis Characteristics of the Peanut Shell before and after Dryness

WANG Hong-zhi, LIU Chao   

  1. College of Power Engineering, Chongqing University, Chongqing 400044, China
  • Received:2007-01-11 Revised:1900-01-01 Online:2007-07-30 Published:2007-07-30

摘要: 用热重分析法对干燥前后花生壳的热解特性进行了研究。分析了干燥前后花生壳样品在升温速率为 25℃/min 下的热解特性,得到热重曲线(TG)、微商热重曲线(DTG)和差热曲线(DTA)。发现样品的失重过程由干燥阶段、预炭化阶段、炭化阶段、煅烧阶段4个阶段组成,并对所得曲线进行了详细分析。对比干燥前后花生壳的曲线差异,发现干燥后的花生壳TG/DTG曲线整体左移,热解温度降低。最后对花生壳的热解过程进行了动力学研究。为花生壳的合理利用提供了一定的理论基础。

关键词: 花生壳, 热解, 热重分析, 动力学研究

Abstract: Pyrolysis characteristics of the peanut shell before and after dryness are studied using thermogravimetric analysis at the heating rate of 25℃/min. The curves of TG, DTG and DTA are gotten through the experiments. After the detailed analysis of the curves, it is found that the pyrolysis process can be divided into four stages: the dehydrating phase, the pre-charring phase, the charring phase and the calcining phase. Compared with the curves of the fresh and dried sample, TG/DTG of the dried sample moves to the left as a whole and the pyrolysis temperature is decreased. Kinetics study of the pyrolysis process is carried out at last. All these results supply the theoretical basis for making full use of the peanut shell.

Key words: peanut shell, pyrolysis, thermogravimetric analysis, kinetics study

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