模拟CO_2埋藏的煤储层元素迁移实验研究  

Laboratory Study on Elements Migration Associated with CO_2 Sequestration in Coal

作　　者：刘长江[1] 桑树勋[1] G.X.Wang Sue Golding 

机构地区：[1]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(徐州),江苏徐州221008 [2]School of Chemical Engineering,The University of Queensland [3]School of Earth Science,The University of Queensland

出　　处：《中国煤炭地质》2010年第1期20-23,26,共5页Coal Geology of China

摘　　要：采用高压超临界CO2地球化学反应器对CO2在煤储层中的地质埋藏进行模拟,利用电感耦合等离子体发射光谱仪(ICP-OES)以及电感耦合等离子体质谱(ICP-MS)分别对淋滤液和煤样中的10种微量元素进行测试,对煤中微量元素在CO2的地质埋藏过程中的迁移进行了实验研究。结果表明:在CO2的地质埋藏过程中对煤的有机组成和无机矿物等均具有改造作用,从而影响到煤中微量元素的赋存和迁移特征,Cr、Zn、Cu等元素迁移能力相对较强,而Co、Ba、V等元素相对较弱;元素迁移能力大小顺序为:Cr>Zn>Cu>Ni>Cd>Mn>Co>Ba>V。The CO2 sequestration into coal was simulated by high pressure supercritical CO2 geochemical reactor and ICP-OES, ICPMS were employed to analyze trace elements in leaehates and coal. Trace elements migration during the sequestration process was studied and the results show that： Both the organic components and inorganic minerals will be influenced by the CO2 sequestration process and hence, the occurrence and migratory characteristics of elements will also be affected. Cr, Zn and Cu are easier to be migrated and Co, Ba, V are relatively harder. The migration abilities are： Cr〉Zn〉Cu〉Ni〉Cd〉Mn〉Co〉Ba〉V.

关 键 词：CO2地质埋藏 煤 元素迁移 

分 类 号：P618.11[天文地球—矿床学] P595[天文地球—地质学]