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炼焦煤中多环芳烃的分布特性研究

DISTRIBUTION CHARACTERISTIC OF POLYCYCLIC AROMATIC HYDROCARBONS IN COKING COAL

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【作者】 何选明黄鹂韩军李振东李耀拉

【Author】 He Xuanming Huang Li Han Jun Li Zhendong and Li Yaola(Hubei Key Laboratory of Coal Conversion and New Materials,Wuhan University of Science and Technology,430081 Wuhan; State Key Laboratory of Coal Combustion,Huazhong University of Science and Technology,430074 Wuhan; Coal and Chemical Works Panzhihua Iron and Steel Corporation Limited,617022 Panzhihua,Sichuan)

【机构】 武汉科技大学湖北省煤转化与新型炭材料重点实验室华中科技大学煤燃烧国家重点实验室攀枝花钢铁有限责任公司煤化工厂

【摘要】 选取6种典型炼焦煤用二氯甲烷作萃取剂经索氏提取和K-D浓缩,采用硅胶柱层析纯化,利用高效液相色谱法(HPLC)对其中含有的16种多环芳烃(PAHs)进行测定,研究了不同煤种中PAHs的分布.结果表明,6种煤中PAHs主要以3环、4环和5环形式存在;此外还发现PAHs总量随煤化度提高而减少,随挥发分含量和氢碳摩尔比增大而增加;且PAHs含量与煤中碳含量和氧碳摩尔比也存在一定关系.

【Abstract】 The distribution characteristics of 16 polycyclic aromatic hydrocarbons(PAHs)in 6 typical coking coals were investigated.The coal samples were extracted by the Soxhlet extractor with methylene chloride,concentrated by the K-D concentrator,and purified by silica gel technique,then PAHs in the coal samples were analyzed by a high performance liquid chromatographic(HPLC).Experimental results showed that most PAHs were present in the coal with 3-ring to 5-ring structure in the six coals;moreover,the higher coal rank is,the lower the total content of PAHs is.The coal with the high volatile content and H/C mole ratio contained higher PAHs.It was also discovered that there was correlation between PAHs content and carbon content,O/C mole ratio in the six coals.

【关键词】 炼焦煤多环芳烃分布特性
【Key words】 coking coalPAHsdistribution characterization
【基金】 国家自然科学基金资助项目(50806053);煤燃烧国家重点实验室开放基金资助项目(FSKLCC0805)
  • 【分类号】TQ533.1
  • 【被引频次】8
  • 【下载频次】234
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