| 煤粉预热对高炉喷吹中煤粉燃烧行为的影响 |
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| 引用本文： | 赵俊东,王恒,杨永昌,杜辉杰,宋广懂.煤粉预热对高炉喷吹中煤粉燃烧行为的影响[J].过程工程学报,2011,11(4):606-612. |
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| 作者姓名： | 赵俊东 王恒 杨永昌 杜辉杰 宋广懂 |
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| 作者单位： | 北京科技大学机械工程学院热能系 北京科技大学机械工程学院 北京科技大学机械工程学院 北京科技大学机械工程学院 |
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| 基金项目： | 中央高校基本科研业务费专项资金资助项目(编号:FRF-AS-10-005B) |
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| 摘 要： | 通过建立数学模型，在Fluent软件的基础上结合自编程序，对不同预热温度下高炉喷吹煤粉的燃烧进行了模拟，得到了预热温度对煤粉燃烧的影响规律. 模型中包含了煤粉与O2, CO2及水蒸汽的异相反应，且考虑了焦炭的燃烧反应. 确定了回旋区的大小与形状，将煤粉燃烧空间划分为4个区域，对不同区域分别提出不同假设进行处理. 计算结果表明，煤粉预热后进行喷吹可促进煤粉在风口前提前气化，使煤粉的燃烧区域前移，提高了煤粉在回旋区的燃尽率；预热温度每提高50℃，煤粉在回旋区的燃尽率平均提高2%.
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| 关 键 词： | 煤粉预热 高炉喷煤 煤粉燃烧 |
| 收稿时间： | 2011-4-8 |
| 修稿时间： | 2011-6-14 |
Impact of Pulverized Coal Preheating on Coal Combustion Behavior in Pulverized Coal Injection of Blast Furnace |
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| ZHAO Jun-dong,WANG Heng,YANG Yong-chang,DU Hui-jie,SONG Guang-dong.Impact of Pulverized Coal Preheating on Coal Combustion Behavior in Pulverized Coal Injection of Blast Furnace[J].Chinese Journal of Process Engineering,2011,11(4):606-612. |
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| Authors: | ZHAO Jun-dong WANG Heng YANG Yong-chang DU Hui-jie SONG Guang-dong |
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| Affiliation: | School of Mechanical Engineering, University of Science & Technology Beijin Mechanical Engineering Institute of University of Science and Technology Beijing Mechanical Engineering Institute of University of Science and Technology Beijing Mechanical Engineering Institute of University of Science and Technology Beijing |
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| Abstract: | By establishing the mathematical model and using own program based on Fluent software,the combustion of pulverized coal injected at different preheated temperatures was simulated,and the impact of different preheated temperatures on coal burning was examined.The model contained the heterogeneous reactions of coal with oxygen,carbon dioxide and steam,and the burning reaction of coke was also considered.The size and shape of raceway were determined,and the coal combustion space was divided into four zones whi... |
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| Keywords: | coal powder preheating pulverized coal injection pulverized coal combustion |
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