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TG-DSC测定煤热解反应热过程中确定基线热流的技术方法

解强 梁鼎成 何璐 李柏熹 张峰

解强, 梁鼎成, 何璐, 李柏熹, 张峰. TG-DSC测定煤热解反应热过程中确定基线热流的技术方法[J]. 矿业科学学报, 2017, 2(1): 82-89.
引用本文: 解强, 梁鼎成, 何璐, 李柏熹, 张峰. TG-DSC测定煤热解反应热过程中确定基线热流的技术方法[J]. 矿业科学学报, 2017, 2(1): 82-89.
Xie Qiang, Liang Dingcheng, He Lu, Li Boxi, Zhang Feng. Method of determining baseline heat flow in measurement of coal pyrolysis reaction heat by TG-DSC[J]. Journal of Mining Science and Technology, 2017, 2(1): 82-89.
Citation: Xie Qiang, Liang Dingcheng, He Lu, Li Boxi, Zhang Feng. Method of determining baseline heat flow in measurement of coal pyrolysis reaction heat by TG-DSC[J]. Journal of Mining Science and Technology, 2017, 2(1): 82-89.

TG-DSC测定煤热解反应热过程中确定基线热流的技术方法

基金项目: 国家863高技术基金(2011AA05A202)
详细信息
    作者简介:

    解强(1965—),男,安徽淮南人,教授,博士,博士生导师,从事煤化学、煤化工领域的研究工作。

  • 中图分类号: TQ530.2

Method of determining baseline heat flow in measurement of coal pyrolysis reaction heat by TG-DSC

  • 摘要: 利用差示扫描量热仪测定煤热解反应热,仪器输出的总热流信号是由反应热热流和基线热流组成,故基线热流的确定成为测定反应热的关键。论文分析了TG-DSC测定煤及其他非均质有机物热解反应热过程中基线热流的构成,比较了经验法和测定法确定基线热流的优缺点,评估了基线热流各组分的测定方法,尤其关注这些方法对煤热解反应热测定时获取基线热流的可借鉴性。结果表明,TG-DSC测定煤热解反应热时,基线热流是由显热热流和辐射热流差组成;显热热流可借助Merrick模型、灰分比热容经验公式及混合物模型计算求出,辐射热流差则通过研究提出的辐射校正因子λ,将煤热解过程与煤焦热解过程关联后计算确定。最终,由显热热流和辐射热流差之和确定热解过程的基线热流。
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出版历程
  • 收稿日期:  2016-09-08
  • 刊出日期:  2017-02-15

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