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溶剂极性控制下的煤抽余物吸附甲烷能力研究

陈润,  王治洋,  秦勇,  王琳琳,  韦重韬,  王优阳

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文章导航 > 燃料化学学报（中英文）  > 2015 >  43(10): 1153-1157
陈润, 王治洋, 秦勇, 王琳琳, 韦重韬, 王优阳. 溶剂极性控制下的煤抽余物吸附甲烷能力研究[J]. 燃料化学学报（中英文）, 2015, 43(10): 1153-1157.
引用本文: 陈润, 王治洋, 秦勇, 王琳琳, 韦重韬, 王优阳. 溶剂极性控制下的煤抽余物吸附甲烷能力研究[J]. 燃料化学学报（中英文）, 2015, 43(10): 1153-1157.
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CHEN Run, WANG Zhi-yang, QIN Yong, WANG Lin-lin, WEI Chong-tao, WANG You-yang. Methane adsorption capacity of extracted coals under control of solvent polarity[J]. Journal of Fuel Chemistry and Technology, 2015, 43(10): 1153-1157.
Citation: CHEN Run, WANG Zhi-yang, QIN Yong, WANG Lin-lin, WEI Chong-tao, WANG You-yang. Methane adsorption capacity of extracted coals under control of solvent polarity[J]. Journal of Fuel Chemistry and Technology, 2015, 43(10): 1153-1157.
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溶剂极性控制下的煤抽余物吸附甲烷能力研究

  • 1.

    中国矿业大学低碳能源研究院 江苏省煤基CO2捕集与地质储存重点实验室, 江苏 徐州 221008;

  • 2.

    中国矿业大学资源与地球科学学院 煤层气资源与成藏过程教育部重点实验室, 江苏 徐州 221008

基金项目: 国家自然科学基金(41202117,41572138),中国博士后基金(2013M540473),江苏省博士后基金(1301035B),中央高校基本科研业务费专项基金(2014QNA17)和煤层气资源与成藏过程教育部重点实验室开放基金(2013-006)资助项目
详细信息
    通讯作者:

    陈润,Tel:15805203840,E-mail:chenrun@cumt.edu.cn;王琳琳,Tel:15895208024,E-mail:wanglinlin0321@163.com.

  • 中图分类号: O647

Methane adsorption capacity of extracted coals under control of solvent polarity

  • 1.

    Key Laboratory Coal-based CO2 Capture & Geological Storage of Jiangsu Province, Low Carbon Energy Institute, China University of Mining and Technology, Xuzhou 221008, China;

  • 2.

    Low Carbon Energy Institute, China University of Mining and Technology, The Key Laboratory of coal-based CO2 Capture & Geological Storage, Jiangsu Province, Xuzhou 221008, China

Funds: The project was supported by the National Natural Science Foundation of China (41202117, 41572138), the China Postdoctoral Science Foundation (2013M540473), the Jiangsu Postdoctoral Science Foundation (1301035B), the Fundamental Research Fund for Central University (2014QNA17) and the Scientific Research Foundation of Key Laboratory of Coalbed Methane Resources and Reservoir Formation Process, Ministry of Education (2013-006).

    摘要
  • 摘要: 基于原煤和有机溶剂抽余物的等温吸附实验结果,对比分析溶剂极性与其煤抽余物吸附甲烷能力变化关系,探讨抽提溶剂极性差异对煤抽余物吸附甲烷能力控制的地球化学机理。结果表明,煤溶剂抽余物等温吸附甲烷曲线都遵循Langmuir方程,且二硫化碳(CS2)和苯(C6H6)溶剂抽提作用增大了煤吸附甲烷量,四氢呋喃(THF)和丙酮溶剂抽提作用减小了煤吸附甲烷量。实验发现,煤抽余物吸附甲烷能力变化与抽提溶剂极性成负相关关系,该现象可用相似相容原理解释:CS2和C6H6溶剂极性较弱,抽提出较多具有非极性结构(-CH3和-CH2-)的烷烃和芳烃,为甲烷在煤表面吸附增多了吸附位而增强了抽余物吸附甲烷能力,THF和丙酮溶剂极性较强,抽提出较多具有极性结构(-CHO、-OH、和-COOH)的非烃和沥青质,减少了吸附位而降低煤抽余物的甲烷吸附能力。
    Abstract: Based upon isothermal methane adsorption on raw and solvent extracted coals, relationship between solvent polarity and methane adsorption capacity change of the coal was analyzed, and the possible geochemical mechanism was discussed from polarity of the solvents. The results show that methane isothermal adsorption curves on the extracted coals follow the Langmuir equation. Extraction with CS2 and C6H6 enhances methane adsorption capacities on extracted coals, and that with tetrahydrofuran (THF) and acetone is opposite. There is a negative correlation between methane adsorption capacity change of the coal and the solvent polarity, which can be explained by similarity-intermiscibility theory. The polarities of CS2 and C6H6 are weaker, which can extract more alkane and aromatic hydrocarbons with nonpolar molecule structure (-CH3 and -CH2-) to increase the adsorbed space of coal surface for methane adsorption. The polarities of THF and acetone are stronger, which can extract more non-hydrocarbon and asphaltene with polar molecule structure (-CHO, -OH and -COOH) to reduce the adsorbed space of coal surface for methane adsorption.
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    • 参考文献(12)
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出版历程
  • 收稿日期:  2015-04-24
  • 修回日期:  2015-05-29
  • 刊出日期:  2015-10-31

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