| Na，K添加量对超细煤粉燃烧特性的影响 |
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| 引用本文： | 魏砾宏,李润东,姜秀民,李延吉. Na，K添加量对超细煤粉燃烧特性的影响[J]. 煤炭学报, 2009, 34(5): 688-691 |
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| 作者姓名： | 魏砾宏 李润东 姜秀民 李延吉 |
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| 作者单位： | 沈阳航空工业学院 清洁能源与环境工程研究所，辽宁 沈阳,110034 |
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| 基金项目： | 国家自然科学基金，辽宁省教育厅A类计划 |
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| 摘 要： | 利用热天平，通过对不同Na，K含量脱灰煤粉样品燃烧特性曲线的分析，研究了Na，K含量对铁法超细脱灰煤粉燃烧特性的影响.实验结果表明: Na，K对超细脱灰煤粉的燃烧具有明显的促进作用，不同Na，K含量脱灰样品的TG，DTG曲线均在原煤的下方，随Na，K含量的增加，脱灰样品的着火温度降低，达到最大失重速率的温度降低，对样品500 ℃时的燃尽率也有明显提高.因此，可以认为Na，K对挥发分的析出、着火以及固定碳的燃烧都具有催化作用，但过量的Na严重抑制煤粉的燃烧.
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| 关 键 词： | Na K；超细煤粉；燃烧特性 |
| 收稿时间： | 2008-05-26 |
Effects of Na,K on micro-pulverized coal combustion characteristics |
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| WEI Li-hong,LI Run-dong,JIANG Xiu-min,LI Yan-ji. Effects of Na,K on micro-pulverized coal combustion characteristics[J]. Journal of China Coal Society, 2009, 34(5): 688-691 |
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| Authors: | WEI Li-hong LI Run-dong JIANG Xiu-min LI Yan-ji |
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| Affiliation: | 1.Institute of Clean Energy and Environmental Engineering;Shenyang Institute of Aeronautical Engineering;Shenyang 110034;China;2.School of Mechanical Engineering;Shanghai Jiaotong University;Shanghai 200240;China |
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| Abstract: | Effects of Na and K addition amounts on micro-pulverized coal combustion was studied on a non-isothermal thermogravimetry,which is based on the analysis of combustion characteristic curves.The results show that Na and K improve obviously the combustion of demineralized coal.The TG and DTG curves of demineralized coal with Na and K are below the curves of the raw coal.With the increase of contents of Na and K,the ignition temperature and the temperature of maximum weight loss velocity reduce,while the burnou... |
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| Keywords: | Na K |
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