| 煤中氟化物在燃烧产物中的分布特征 |
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| 引用本文： | 刘建忠,齐庆杰,周俊虎,曹欣玉,岑可法.煤中氟化物在燃烧产物中的分布特征[J].环境科学,2003,24(4):127-130. |
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| 作者姓名： | 刘建忠 齐庆杰 周俊虎 曹欣玉 岑可法 |
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| 作者单位： | 1. 浙江大学热能工程研究所能源洁净利用与环境工程教育部重点实验室,杭州,310027
2. 辽宁工程技术大学资源环境学院,阜新,123000 |
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| 基金项目： | 国家重点基础研究发展规划项目(G1999022211);国家自然科学基金项目(59876036);浙江省自然科学基金项目(596097) |
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| 摘 要： | 通过煤的灰化程序研究煤中氟在燃烧产物中的静态分布特征,并对不同燃烧方式的工业和电站锅炉燃烧时煤中氟化物在燃烧产物中的分布特征进行试验结果表明:煤中氟属于强挥发性元素,在煤灰中是非浓集的.煤粉炉燃煤过程中,煤中氟析出强度高,约有94.5%的氟以气态氟形式析出;层燃炉气态氟的析出率略有降低,约有80%的氟以气态氟形式析出.煤粉炉飞灰各级分粒子中氟元素的质量分数分布呈"单峰"型,峰值出现在74～104μm粒度级,约占飞灰总氟量的55%～60%.
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| 关 键 词： | 氟化物 煤燃烧 煤粉炉 层燃炉 飞灰粒子 氟分布特征 |
| 文章编号： | 0250-3301(2003)04-04-0127 |
| 收稿时间： | 2002/10/25 0:00:00 |
| 修稿时间： | 2002年10月25 |
Distribution of Fluoride in the Combustion Products of Coal |
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| Liu Jianzhong,Qi Qingjie,Zhou Junhu,Cao Xinyu and Cen Kefa.Distribution of Fluoride in the Combustion Products of Coal[J].Chinese Journal of Environmental Science,2003,24(4):127-130. |
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| Authors: | Liu Jianzhong Qi Qingjie Zhou Junhu Cao Xinyu and Cen Kefa |
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| Institution: | Clean Energy and Environment Engineering, Key Laboratory of Ministry of Education, Institute for Thermal Power Engineering, Zhejiang University, Hangzhou 310027, China. jzliu@cmee.zju.edu.cn |
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| Abstract: | The static distribution characteristic of fluoride in the combustion products of coal was studied by ashing procedure of coal, and the dynamic distribution characteristics of fluorine in the combustion products of coal in pulverized-coal-fired boiler and layer-burning boiler were investigated. Experimental results identified that fluorine in coal belong to volatile elements, fluorine in fly ash and bottom ash were non-rich. About 94.5% of the fluorine in coal emitted as gaseous-fluorine during coal combustion in pulverized-coal-fired boiler, and about 80% of the fluorine in coal emitted as gaseous-fluorine during coal combustion in layer-burning boiler. 55%-60% of the fluorine in fly ash of pulverized-coal-fired boiler were distributed in fly ash particles with a diameter of 74 microns-104 microns. |
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| Keywords: | fluorine coal combustion pulverized coal fired boiler chain grate boiler fly ash distribution of fluorine |
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