CO_2地质处置研究进展  

An overview of underground sequestration of carbon dioxide

作　　者：张晓宇[1] 成建梅[1] 刘军[1] 王言振[1] 

机构地区：[1]中国地质大学环境学院水资源与水文地质系,武汉430074

出　　处：《水文地质工程地质》2006年第4期85-89,共5页Hydrogeology & Engineering Geology

摘　　要：减少CO2向大气排放的一个主要的方法是将其隔离在地下深部,即CO2地质处置。CO2地质处置的方法主要包括:含水层处置,海洋处置,利用CO2开采油气以及煤层甲烷气体等。含水层处置有三种机制:(1)水力学方法;(2)溶解的方法;(3)矿物处置。CO2地质处置是可行的技术方法,在实际中已有了应用。在难以获得复杂的深部含水层环境的情况下,地球化学数值模拟方法在评价地质处置CO2可行性上具有重要的作用。The carbon dioxide sequestration is one of the useful approaches to reduce CO2 emission, which includes the disposal in aquifer, the disposal in the ocean, CO2 sequestration in depleted oil and gas reservoirs to enhance the oil and gas recovery, and sequestration of CO2 in deep coalfields replacing the methane. There are three types of trapping mechanism for CO2 disposal in aquifer： （1） CO2 can be trapped as gas or supercritical fluid under lowpermeability cap-rock, which is referred to as hydrodynamic trapping, （2） CO2 can dissolve into the groundwater, and （3） CO2 can react directly or indirectly with minerals in the geologic formation-mineral trapping. The geological sequestration of carbon dioxide is feasible in technology, and the technique of CO2 disposed in the reservoirs has already been used in practice. Numerical models of geochemical processes have important effects in the evaluation of the feasibility of CO2 underground sequestration.

关 键 词：二氧化碳 地质处置 含水层 数值模拟 

分 类 号：P641.3[天文地球—地质矿产勘探] TP391[天文地球—地质学]