| 阳泉煤泥等温加热过程中汞释放特性研究 |
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| 引用本文： | 高正阳,范元周,陈嵩涛,殷立宝,陈传敏.阳泉煤泥等温加热过程中汞释放特性研究[J].中国电力,2015,48(4):57-60. |
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| 作者姓名： | 高正阳 范元周 陈嵩涛 殷立宝 陈传敏 |
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| 作者单位： | 1. 华北电力大学 能源动力与机械工程学院，河北 保定 071003； 2. 广东电网有限责任公司电力科学研究院，广东 广州 510062； 3. 华北电力大学 环境科学与工程学院，河北 保定 071003 |
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| 基金项目： | This work is supported by National Natural Science Foundation of China (No.51076045). |
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| 摘 要： | 为能大规模综合利用煤泥，有必要对煤泥燃烧时汞的释放特性进行研究。选取2种煤泥进行了空气气氛下的等温加热实验，考察加热时间和温度对煤泥失重与汞释放的影响。实验结果表明，煤泥中的汞在200 ℃左右开始释放，汞大量释放的温度区间为200~400 ℃，而400 ℃以上汞几乎释放完全；温度越高，汞的释放速率越快，达到最大释放率所需的时间越短；2种煤泥的汞释放行为不同，表明不同的原煤分选工艺可能造成煤泥中汞的形态分布存在差异。
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| 关 键 词： | 煤泥 汞 等温实验 汞释放特性 |
| 收稿时间： | 2015-01-13 |
Study on Mercury Emission Characteristics during Coal Slime Isothermal Heating Experiments |
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| GAO Zhengyang,FAN Yuanzhou,CHEN Songtao,YIN Libao,CHEN Chuanmin.Study on Mercury Emission Characteristics during Coal Slime Isothermal Heating Experiments[J].Electric Power,2015,48(4):57-60. |
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| Authors: | GAO Zhengyang FAN Yuanzhou CHEN Songtao YIN Libao CHEN Chuanmin |
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| Affiliation: | 1. School of Energy, Power and Mechanical Engineering, North China Electric Power University, Baoding 071003, China;2. Electric Power Research Institute of Guangdong Power Grid Corporation Limited, Guangzhou 510062, China;3. School of Environmental Science and Engineering, North China Electric Power University, Baoding 071003, China |
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| Abstract: | In order to utilize coal slimes substantially and comprehensively, studies on mercury releasing characteristics in coal slime combustion should be conducted. In this paper, the isothermal heating experiments on two kinds of selected coal slimes are carried out to investigate the impact of heating time and temperature on mercury releasing characteristics in the normal air. The experiment results indicate that the mercury in coal slimes begins to release at about 200 ℃ and is released substantially between 200 ℃ and 400 ℃. When the temperature gets higher than 400 ℃, it is released almost completely. The higher the temperature, the faster mercury is released and the shorter time period is needed to achieve the maximum mercury emissions. In addition, the isothermal experiment shows some differences between the mercury release courses of the two slimes, which means that different raw coal sorting process may result in different mercury distribution in slimes. |
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| Keywords: | coal slime mercury isothermal decomposition release characteristic |
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