| 煤种及气氛对煤热解中NH3和HCN释放的影响 |
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| 引用本文： | 武洋仿,景晓霞,孙鸿,常丽萍.煤种及气氛对煤热解中NH3和HCN释放的影响[J].山西化工,2008,28(1):18-20. |
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| 作者姓名： | 武洋仿 景晓霞 孙鸿 常丽萍 |
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| 作者单位： | 1. 运城学院应用化学系,山西,运城,044000
2. 太原理工大学煤科学重点实验室,山西,太原,030024 |
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| 基金项目： | 运城学院校科研和教改项目 |
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| 摘 要： | 在固定床反应器上采用程序升温法对碳含量不同的三种煤样进行了氩气、甲烷、15%水蒸气/氩气和15%水蒸气/甲烷气氛下的煤加氢热解研究,对热解过程中产生的NOx主要前驱物--NH3、HCN的释放规律及其影响因素进行了考察.实验表明,由于水蒸气、甲烷提供了活性含氢基团,所以促进了热解过程中NH3、HCN的生成.另外,甲烷和水蒸气之间的协同作用,也可以提供更多的活性含氢基团.
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| 关 键 词： | 煤 加氢热解 水蒸气 CH4 NH3 HCN 煤种 煤热解 影响因素 coal pyrolysis during reaction 协同作用 基团 含氢 活性 实验 考察 释放规律 前驱物 热解过程 研究 加氢热解 甲烷气 水蒸气 氩气 |
| 文章编号： | 1004-7050（2008）01-0018-03 |
| 收稿时间： | 2007-09-29 |
| 修稿时间： | 2007年9月29日 |
Effect of coal and reaction gas on NH3 released during coal pyrolysis |
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| WU Yang-fang,JING Xiao-xia,SUN Hong,CHANG Li-ping.Effect of coal and reaction gas on NH3 released during coal pyrolysis[J].Shanxi Chemical Industry,2008,28(1):18-20. |
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| Authors: | WU Yang-fang JING Xiao-xia SUN Hong CHANG Li-ping |
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| Abstract: | This paper mainly discusses the formation and release of NOx precursors NH3 during coal fixed-bed pyrolysis. Three coals with different carbon content were selected in our experiments. The coal were YN,PS, DS. The reaction gases were At, CH4, 15% H2O/Ar and 15% H2O/CH4. The results indicate that the NH3 yield is higher in the reaction gas of steam and CH4 than that of only Ar or CH4 and this increasing trend changes with coal types, final tempemture, reaction time. CH4 and H2O may provid high reactivity of H which can promote the formation of NH3. The variety of char yield obtained after coal pyrolysis is not obvious in the optimal reaction conditions. |
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| Keywords: | coal hydropyrolysis steam CH4 NH3 |
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