| 煤中氮的赋存状态与含量分布研究进展 |
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| 引用本文： | 张爱华,陶明信,刘朋阳,陈祥瑞,李丹丹.煤中氮的赋存状态与含量分布研究进展[J].煤田地质与勘探,2016,44(1):9-16. |
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| 作者姓名： | 张爱华 陶明信 刘朋阳 陈祥瑞 李丹丹 |
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| 基金项目： | 国家自然科学基金项目（41472102） |
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| 摘 要： | 综述了煤中氮的赋存状态与氮含量的分布特征方面的研究现状及存在问题。认为，煤中的氮几乎全部以有机物的形式存在，其赋存状态主要有4种类型:吡咯型氮（N-5）、吡啶型氮（N-6）、季氮（N-Q）和氮氧化物（N-X），且这四种含氮官能团的分配比例受煤阶和煤热解程度的影响。煤中氮的质量分数一般在0.5%~2.5%，其变化与煤级、成煤期、沉积环境、原始成煤植物、煤岩组成及岩浆侵入等因素有关。目前有关影响氮含量变化因素的研究主要集中在探讨氮的含量与煤级的关系上，并认为氮的含量随煤级升高而增大，但在煤化作用后期迅速降低。有关氮的研究可丰富煤的元素地球化学研究，并为煤的环境污染治理提供更多的科学依据。
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| 关 键 词： | 煤 氮 赋存状态 含量 |
| 收稿时间： | 2015-01-15 |
Advance of research on the occurrence state and content of nitrogen in coal |
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| Abstract: | This paper summarizes the current status of research on occurrence state and content of nitrogen in coal. Organic nitrogen is considered as the major mode in coal and exists in the forms of pyridine (N-6), pyrrolic(N-5), quaternary nitrogen (N-Q) and nitrogen oxides (N-X). Relative amount of these four nitrogen -bearing functional groups change with coal rank and the pyrolysis of coal. Studies have shown that nitrogen content in coal varies from 0.5% to 2.5%, and is mainly influenced by several geological factors including coal rank, coal-forming age, depositional environment, coal-forming plants, macerals and magmatic intrusion. At present, study of nitrogen content in coal focuses on the relationship between the nitrogen content and coal rank, and considers that the nitrogen content increases with coal rank, but decreases rapidly in the late stage of coalification. Relative studies of nitrogen in coal can enrich the geochemistry research of elements in coal and provide more scientific basis for controlling environmental pollution of coal. |
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