| 河北开滦矿区晚古生代煤对CH_4/CO_2二元气体等温解吸特性 |
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| 引用本文： | 张贝贝,代世峰,雒洋冰,宋宪存.河北开滦矿区晚古生代煤对CH_4/CO_2二元气体等温解吸特性[J].地质论评,2010,56(5):753-760. |
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| 作者姓名： | 张贝贝 代世峰 雒洋冰 宋宪存 |
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| 作者单位： | 1. 中国矿业大学(北京)地球科学与测绘工程学院,北京,100083
2. 煤炭资源与安全开采国家重点实验室,北京,100083;中国矿业大学(北京)地球科学与测绘工程学院,北京,100083 |
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| 基金项目： | 本文为欧盟第六框架的计划课题和国家973课题（编号2006CB202201）资助的成果 |
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| 摘 要： | 研究了河北开滦矿区不同变质程度的煤对不同配比CH4/CO2二元气体等温解吸特性,并用扩展Langmuir方程的推论计算了CH4/CO2二元气体各组分在吸附相中的浓度,分析了其变化特征。结果表明:在开滦矿区煤对CH4/CO2二元气体解吸过程中,中等变质程度煤(Ro=1.21%)对混合气体的吸附能力大于低变质程度煤(Ro=0.58%),且混合气体中CO2浓度越大,总吸附量越多。吸附相中CH4的相对浓度是逐渐降低的,CO2的相对浓度是逐渐升高的。开滦矿区中等变质程度煤相对于低变质程度煤,用CO2气体置换煤层中CH4,可以获得较高的单位压降CH4解吸率,注入CO2的量越多、相对浓度越高,其置换效果就越好,更适于往煤层注入CO2提高煤层气产量技术的实施。
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| 关 键 词： | 开滦矿区 等温解吸实验 二元气体 吸附相 解吸率 |
Isothermal Desorption Chracteristics of CH4/CO2 Mixed Gas for the Late Paleozoic Coals from the Kailuan Coalfield of Hebei Province |
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| ZHANG Beibei,DAI Shifeng,LUO Yangbing,SONG Xiancun.Isothermal Desorption Chracteristics of CH4/CO2 Mixed Gas for the Late Paleozoic Coals from the Kailuan Coalfield of Hebei Province[J].Geological Review,2010,56(5):753-760. |
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| Authors: | ZHANG Beibei DAI Shifeng LUO Yangbing SONG Xiancun |
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| Institution: | ZHANG Beibei2),DAI Shifeng1,2),LUO Yangbing2),SONG Xiancun2)1) State Key Laboratory of Coal Resources and Safe Mining,China University of Mining & Technology,Beijing,100083,2) College of Geosciences and Surveying Engineering,China Univeristy of Mining and Technology |
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| Abstract: | This paper describes the isothermal desorption chracteristics of mixed CH4/CO2 gas for the Late Paleozoic Coals with different ranks from the Kailuan Coalfield,Hebei Province. The abundance and variation of each gas in adsorption phases were analyzed using the extended-Langmuir equation. The results of isothermal desorption experiments show that the medium-rank coal (Ro= 1.21 %) has a stronger adsorption ability of the mixing gas than the low-rank coal (Ro= 0.58%). The quantity of the adsorbed mixed gas by ... |
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| Keywords: | Kailuan Coalfield desorption isotherm experiment binary-component gas adsorption phase desorption rate |
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