摘要
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。
Underground disposal is one of the most effective measures to reduce CO2 content in atmosphere to alleviate the greenhouse effect. CO2 storage in deep unminable coaldbeds shows great potential in China. Taking 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, CO2/CH4 adsorption quantity ratio is gradually reduced. The equilibrium time of ionic reaction of CO2 in the coal-bearing water reaches up to about 120 d. With the deep unminable coalbeds in Xuzhou area as research object, the potential of carbon dioxide geologic storage was analyzed and the result reflects that the deep coalbeds in Xuzhou area could be an important site for geologic storage of carbon dioxide in the suitable depth and position.
出处
《煤田地质与勘探》
CAS
CSCD
北大核心
2014年第4期11-15,共5页
Coal Geology & Exploration
基金
国家大学生创新性实验计划项目(11-01519)
关键词
徐州地区
深部不可采煤层
CO2
地质处置
Xuzhou area
deep unminable coalbeds
carbon dioxide
geological storage
