甲烷对超临界CO_2/水/岩石体系润湿特性影响的分子动力学模拟研究  

Molecular dynamics simulation of effect of methane on wettability of supercritical CO_2/water/rock system

作　　者：陈聪[1] 柴壮 赵鸿强 

机构地区：[1]大连理工大学海洋能源利用与节能教育部重点实验室,辽宁大连116024 [2]中国船舶重工集团公司第703研究所,黑龙江哈尔滨150000

出　　处：《热科学与技术》2017年第6期456-463,共8页Journal of Thermal Science and Technology

摘　　要：二氧化碳捕集及封存(CCS)技术以其减少碳排放量的高效性,成为各国解决碳排放问题的首要选择。通过分子动力学模拟方法,探究了地质封存环境下,在不同岩石结构表面,二氧化碳中混入甲烷对润湿性的影响规律。结果表明:在温度为318.00K、压力为20 MPa的环境下,二氧化碳中混入摩尔分数为20%的甲烷,对水在结构分别为Q^3和(Q^3+Q^4)岩石表面的接触角均无显著影响。Environmental problems caused by carbon dioxide emissions have aroused widespread concern in the international community.Researchers are conducting scientific research and technological developments to reduce carbon emissions.Carbon Capture and Storage（CCS）are regarded as the first choice to tackle carbon emissions by its effectiveness.Using the method of molecular dynamics simulations,the effects of methane adding to carbon dioxide on wettability in CCS were explored on different rock structure surfaces.The results show that there is no significant influence of adding methane（20%）into carbon dioxide,when the temperature is 318.00 Kand the pressure is 20 MPa,on the rock surface with Q^3 and（Q^3＋Q^4）.

关 键 词：CO2地质封存 润湿性 咸水层 分子动力学模拟 

分 类 号：O561[理学—原子与分子物理]