4种生物质秸秆的热解特性及其动力学分析
DOI:
作者:
作者单位:

作者简介:

通讯作者:

中图分类号:

基金项目:

国家公益性行业(农业)科研专项(201003063-04)


Pyrolysis characteristics and kinetics analysis of four kinds of biomass straw
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    为比较不同种类生物质秸秆热解特性的差异,探讨地域对生物质秸秆热解特性的影响,以四川、湖北和云南产区的油菜、小麦、玉米和水稻秸秆为试材,采用SDT-Q600型同步热分析仪,通入高纯氮气后,对样品进行热解与测定(加热速率为20℃/min,终止温度为1000℃),最终获得不同种类和不同产区生物质秸秆的TG曲线和DTG曲线,并对各曲线进行比较与分析。结果表明:4种生物质秸秆热解过程呈现相似的变化规律,但由于样品种类的组分不同,样品呈现出失重程度和失重速率上的差异;地域对同种生物质秸秆的失重程度有影响,对失重速率影响不明显。采用Coats-Redfern法,对不同种类和产区的生物质秸秆热解过程进行动力学计算,得出表观活化能和频率因子动力学参数。结果显示,在主要失重阶段生物质秸秆活化能为89~144 kJ/mol。

    Abstract:

    The purpose of this paper is to compare the differences between different types of pyrolysis characteristics of biomass straws and explore the impact of different regions on the pyrolysis characteristics of biomass straws. The SDT-Q600 Simultaneous thermal analyzer(TGA)with high purity nitrogen flowing was used for the pyrolysis experiments(the heating rate is 20℃/min, the end temperature is 1000℃) of rape, wheat,corn and rice straw got from Sichuan, Hubei and Yunnan Provinces. The TG curve and DTG curve of the different kinds of biomass straws in different areas were obtained, and then compare and analyzed. The results showed that the pyrolysis process of the 4 kinds of straws showed similar change laws; however, the samples showed differences in the degree of weight loss and weight loss rate according to the different types of components; the region had effects on the degree of weight loss of the same kind of straw, while there is no significant effect on the weight loss rate; the kinetic parameters of the apparent activation energy and frequency factor were obtained with the dynamic calculations of biomass pyrolysis process of different species and areas using Coats-Redfern method. In the main weight loss stage, the activation energy of straw biomass is in the range of 89-144 kJ/mol.

    参考文献
    相似文献
    引证文献
引用本文

冉二君,刘梅英,牛智有.4种生物质秸秆的热解特性及其动力学分析[J].华中农业大学学报,2015,34(5):132-137

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2014-08-20
  • 最后修改日期:
  • 录用日期:
  • 在线发布日期: 2015-07-22
  • 出版日期: