| A Model-based Phenomenological Investigation of Char Combustion Kinetics through Thermogravimetry |
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| 作者姓名： | QunCHEN RongHE ZhanGangLIANG XuChangXU ChangHeCHEN |
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| 作者单位： | DepartmentofThermalEngineering,TsinghuaUniversity,Beijing10084 |
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| 摘 要： | Five coal char samples were burnt in thermobalance with ramp heating rate of 30 K/min. The pore structure of these char samples was studied through mercury intrusion method. Combined with the kinetic theory of gases, the data of surface area was used in fitting the results. As a result, the kinetic triplet was given. The analysis showed that five char samples share almost the same intrinsic activation energy of the overall reaction. The phenomenological implication of the derived combustion rate equation was given.
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| 关 键 词： | 热重分析法 燃烧 煤 热平衡 活化能 动态模型 预指数因子 |
A Model-based Phenomenological Investigation of Char Combustion Kinetics through Thermogravimetry |
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| QunCHEN RongHE ZhanGangLIANG XuChangXU ChangHeCHEN.A Model-based Phenomenological Investigation of Char Combustion Kinetics through Thermogravimetry[J].Chinese Chemical Letters,2005,16(3):393-396. |
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| Authors: | Qun CHEN Rong HE Zhan Gang LIANG Xu Chang XU Chang He CHEN |
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| Institution: | Qun CHEN*,Rong HE,Zhan Gang LIANG,Xu Chang XU,Chang He CHEN Department of Thermal Engineering,Tsinghua University,Beijing 10084 |
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| Abstract: | Five coal char samples were burnt in thermobalance with ramp heating rate of 30 K/min. The pore structure of these char samples was studied through mercury intrusion method. Combined with the kinetic theory of gases, the data of surface area was used in fitting the results. As a result, the kinetic triplet was given. The analysis showed that five char samples share almost the same intrinsic activation energy of the overall reaction. The phenomenological implication of the derived combustion rate equation was given. |
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| Keywords: | Thermogravimetry activation energy pre-exponential factor kinetic model function char combustion |
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