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| 镜煤有机溶剂逐级抽提的甲烷吸附响应及其作用机理 | |
| 引用本文： | 陈润,秦勇.镜煤有机溶剂逐级抽提的甲烷吸附响应及其作用机理[J].高校地质学报,2012,18(3):500-504. |
| 作者姓名： | 陈润 秦勇 |
| 作者单位： | 江苏省煤基CO2捕集与地质储存重点实验室中国矿业大学,徐州 221008 |
| 基金项目： | 国家自然科学基金重点项目(40730422);中国矿业大学青年科技基金(2010QNA09);江苏省煤基CO2捕集与地质储存实验室开放基金(2011KF03) |
| 摘 要： | 利用二硫化碳、苯、丙酮和四氢呋喃对不同煤级5 件镜煤样品逐级抽提，测试了原煤和抽余物对甲烷的吸附特性， |
| 关 键 词： | 镜煤 逐级抽提 甲烷 等温吸附 吸附势 |
Methane Adsorption Response of Stepwise-Solvent-Extracted Vitrains and Possible Driving Mechanism |
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| CHEN Run,QIN Yong.Methane Adsorption Response of Stepwise-Solvent-Extracted Vitrains and Possible Driving Mechanism[J].Geological Journal of China Universities,2012,18(3):500-504. | |
| Authors: | CHEN Run QIN Yong |
| Institution: | Key Laboratory of Coal-based CO2 Capture and Geological Storage,Jiangsu Province (CUMT), Xuzhou 221008, China |
| Abstract: | Five sets of vitrain samples were extracted in stepwith organic solvents such as carbon disulfide， benzene， acetone and tetrahydrofuran. The isothermal methane adsorptivity of the raw and extracted samples was measured， and the dynamics of the adsorption differences among extracted samples were analyzed. It was found that the step extraction changes the adsorptivity but the change direction and magnitude depends on the coalification degree， in which the second coalification jump plays a key role on the adsorption change. It was suggested that the change may be originated in two major mechanisms， i.e.， the physical expansion and chemical shrinkage of adsorption space. Carbon disulfide extraction produces a physical expansion effect to flame， gas and early coking coals but a chemical shrinkage effect to late coking coal and anthracite. Damage of the benzene and tetrahydrofuran extractions to the adsorptivity is mainly resulted from chemical shrinkage and the effect of acetone extraction is mainly expressed as the physical expansion. |
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