O2含量对半焦燃烧动力学影响的热重研究
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内蒙古科技大学,内蒙古科技大学,内蒙古科技大学,内蒙古科技大学

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TK16;

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内蒙古应用技术研究与开发资金计划(编号:20130310);内蒙古高校创新团队研究计划(编号:NMGIRT1406);


Study on influence of O2 volume factions on semicoke combustion kinetics by non-isothermal thermogravimetric experiment
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Inner Mongolia Key Laboratory for Utilization of Bayan Obo Multi-metallic Resources,Elected State Key Laboratory,Inner Mongolia University of Science and Technology,Inner Mongolia Key Laboratory for Utilization of Bayan Obo Multi-metallic Resources,Elected State Key Laboratory,Inner Mongolia University of Science and Technology,Inner Mongolia Key Laboratory for Utilization of Bayan Obo Multi-metallic Resources,Elected State Key Laboratory,Inner Mongolia University of Science and Technology

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    摘要:

    为了更进一步地清楚阐述半焦的燃烧过程,采用非等温热重法研究氧气体积分数对半焦燃烧动力学的影响。将半焦燃烧过程的主反应区分为半焦热解脱挥发分(阶段1)、挥发燃烧(阶段2)、挥发分燃烧且碳燃烧(阶段3)、碳单独燃烧(阶段4)4个阶段,采用Coats-Redfern法选取一级反应模型计算各个阶段的动力学参数。结果表明:阶段3所需的表观活化能最小,阶段2或阶段4所需的表观活化能最大。

    Abstract:

    In order to describe semicoke combustion more clearly,influence of oxygen volume fractions on semicoke combustion kinetics was studied by non-isothermal thermogravity.Main reaction temperature range of semicoke combustion was divided in four stages,which were devolatilization(stage 1)、volatile combustion(stage 2)、volatile combustion and carbon combustion(stage 3)、carbon combustion alone(stage 4).Kinetic parameters in different conditions were calculated by Coats-Redfern method and one order reaction model.Results showed that the smallest apparent activation energy was in the third stage.The biggest apparent activation energy was in the second stage or the fourth stage.

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郝丽莹,龚志军,郑坤灿,等. O2含量对半焦燃烧动力学影响的热重研究[J]. 科学技术与工程, 2016, 16(16): .
Hao Li ying, Gong Zhi jun, Zheng Kun can, et al. Study on influence of O2 volume factions on semicoke combustion kinetics by non-isothermal thermogravimetric experiment[J]. Science Technology and Engineering,2016,16(16).

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  • 收稿日期:2016-01-25
  • 最后修改日期:2016-05-21
  • 录用日期:2016-03-22
  • 在线发布日期: 2016-06-15
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