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两相流中煤粉的燃烧机理及动力学特征

李振钢 郭占成 唐惠庆

李振钢, 郭占成, 唐惠庆. 两相流中煤粉的燃烧机理及动力学特征[J]. 燃料化学学报(中英文), 2013, 41(01): 33-39.
引用本文: 李振钢, 郭占成, 唐惠庆. 两相流中煤粉的燃烧机理及动力学特征[J]. 燃料化学学报(中英文), 2013, 41(01): 33-39.
LI Zhen-gang, GUO Zhan-cheng, TANG Hui-qing. Mechanism and kinetic characteristics of pulverized coal combustion in two phase flow[J]. Journal of Fuel Chemistry and Technology, 2013, 41(01): 33-39.
Citation: LI Zhen-gang, GUO Zhan-cheng, TANG Hui-qing. Mechanism and kinetic characteristics of pulverized coal combustion in two phase flow[J]. Journal of Fuel Chemistry and Technology, 2013, 41(01): 33-39.

两相流中煤粉的燃烧机理及动力学特征

基金项目: 国家重点基础研究发展规划(973计划,2012CB720401);国家科技支撑计划(2011BAC01B02)。
详细信息
    通讯作者:

    郭占成,Tel:010-82375042,E-mail:zcguo@metall.ustb.edu.cn。

  • 中图分类号: TQ534

Mechanism and kinetic characteristics of pulverized coal combustion in two phase flow

  • 摘要: 利用微型流化床动力学分析仪研究了两相流条件下无烟煤粉的燃烧反应机理和动力学特征,并与热重法所得结果进行比较分析。结果表明,当温度大于850℃时,煤粉燃烧机理发生了变化,燃烧气态产物的生成比例也随之改变;当气速大于0.10 m/s时,气体扩散限制基本被消除,煤粉燃烧反应速率主要受界面化学反应控制;煤粉燃烧反应速率随着氧气分压的增大呈幂函数形式增长,且氧气分压对煤粉静置燃烧的影响更加显著。煤氧两相流燃烧的表观活化能与静置燃烧相比降低了49 kJ/mol,相同温度条件下两相流燃烧的界面化学反应阻力也明显小于热重法测试结果。
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出版历程
  • 收稿日期:  2012-06-02
  • 修回日期:  2012-08-08
  • 刊出日期:  2013-01-31

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