| 煤中氟化物在燃烧产物中的分布特征 |
| 摘要点击 1374 全文点击 1704 投稿时间：2002-10-25 修订日期：2003-01-29 |
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| 中文关键词 氟化物 煤燃烧 煤粉炉 层燃炉 飞灰粒子 氟分布特征 |
| 英文关键词 fluorine coal combustion pulverized coal fired boiler chain grate boiler fly ash distribution of fluorine |
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| 中文摘要 |
| 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%. |
| 英文摘要 |
| 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 74μm～104μm. |
