徐州地区深部不可采煤层CO2地质处置潜力分析.PDF

第42 卷 第4 期 煤田地质与勘探 Vol. 42 No.4 2014 年8 月 COAL GEOLOGY EXPLORATION Aug. 2014 文章编号: 1001-1986(2014)04-0011-05 徐州地区深部不可采煤层CO2 地质处置潜力分析 宋 革，朱炎铭，王 阳，丁 毅 ( 中国矿业大学资源与地球科学学院，江苏省煤基CO2 捕集与地质储存重点实验室，江苏 徐州 221116) : 地下储存是降低大气中 CO2 含量以缓解温室效应的有效措施之一。在我国，深部不可开采 煤层处置CO2 显示出巨大的潜力。选择了徐州马庄煤矿的气煤做煤样，并对其进行等温吸附实验。 结果表明，在相同条件(压力、温度、煤阶等)下煤对 CO2 的吸附量明显高于对 CH4 的吸附量，两 者比值在 2.68~3.26 ；吸附过程中，随着压力的升高，CO2/CH4 的吸附量比值逐渐降低；CO2 在含 煤水中的离子反应所达到平衡的时间约为 120 d。从而认为，徐州地区煤层在深度和位置适宜的情 况下可以作为CO2 地质处置的有利场所。 ：徐州地区；深部不可采煤层；CO2 ；地质处置 ：P618.11 ：A DOI: 10.3969/j.issn.1001-1986.2014.04.003 Potential of carbon dioxide storage in deep unminable coalbeds in Xuzhou area SONG Ge, ZHU Yanming, WANG Yang, DING Yi (School of Resources and Geoscience, The Key Laboratory of Coal—based CO2 Capture and Geological Storage, China University of Mining and Technology, Xuzhou 221116, China) Abstract: Underground disposal is one of the most effective measures to reduce CO2 content in atmosphere to alleviate the greenhouse effect. CO storage in deep unminable coaldbeds shows great potential in China. Taking 2 gas coal as sample in Mazhuang coal mine, Xuzhou, isothermal adsorption experiment was conducted. The result shows that coal adsorption quantity of CO2 is obviously higher than that of CH4 under the same conditions (pressure, temperature, coal rank, etc), ratio ranging from 2.68 to 3.36. In the process of adsorption, with pressure increasing, CO /CH adsorption quantity ratio is gradually reduced. The equilibrium time of ionic reaction of CO 2 4 2 in the coal-bearing water reaches up to about 1