| 煤的氧化和热解反应的动力学研究 |
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| 引用本文： | 何启林,王德明.煤的氧化和热解反应的动力学研究[J].北京科技大学学报,2006,28(1):1-5. |
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| 作者姓名： | 何启林 王德明 |
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| 作者单位： | 1. 安徽理工大学资源管理与开发工程系,淮南,232001
2. 中国矿业大学能源与安全工程学院,徐州,221008 |
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| 基金项目： | 国家重点基础研究发展计划(973计划) |
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| 摘 要： | 用热分析手段研究了不同煤化程度煤的氧化热解反应.结果表明,在空气中,煤在整个氧化热解过程中,可分为水分蒸发、吸氧增重、受热分解、燃烧与燃尽五个阶段.吸氧增重阶段的氧化反应为1级化学反应,受热分解阶段为1.5级的化学反应.求解出不同煤样在不同氧化阶段的平均表观活化能E和lnA的值,分析了煤氧化过程的特点与E和lnA值在不同氧化阶段的规律性,并用作图方法检验了所求氧化动力学参数的正确性.
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| 关 键 词： | 煤 热分析手段 氧化热解 反应动力学 氧化过程 热解反应 动力学研究 coal reaction thermal degradation oxidation 力学参数 检验 作图方法 规律 分析 表观活化能 氧化阶段 求解 化学反应 氧化反应 燃尽 燃烧 热分解 |
| 收稿时间： | 2004-11-22 |
| 修稿时间： | 2005-03-11 |
Kinetics of oxidation and thermal degradation reaction of coal |
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| HE Qiling,WANG Deming.Kinetics of oxidation and thermal degradation reaction of coal[J].Journal of University of Science and Technology Beijing,2006,28(1):1-5. |
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| Authors: | HE Qiling WANG Deming |
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| Institution: | 1 Department of Resources Development and Management Engineering, Anhui University of Science and Technology, Huainan 232001, China;2 School of Mineral and Safety Engineering Resource, China University of Mining and Technology, Xuzhou 221008, China |
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| Abstract: | The thermal analysis was used to study the oxidation and thermal degradation reaction of coal with different oxidation degrees of coal. The results showed that in the air this reaction of coal could be divided into five stages, e.g. moisture content vaporizing, weighing by absorbing oxygen, thermal degradation by heating, firing, and firing last. The two stages of coal's oxidation, weighing by absorbing oxygen and degradation by heating, were studied. The oxidation reaction of weighing by absorbing oxygen is a first-order chemical reaction, and the thermal degradation reaction by heating is a 3/2-order chemical reaction. The average activation energy E and In A at different stages of oxidation were calculated. The feature of oxidation process and the rule of E and InA at different oxidation processes were analyzed. A reliability of calculated kinetic parameters of the oxidation reaction was checked by the drawing method. |
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| Keywords: | coal thermal analysis method oxidative thermal degradation reaction kinetics |
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