反应温度和水饱和度对多孔介质中二氧化碳水合物形成的影响  

Effect of Reaction Temperature and Water Saturation on Carbon Dioxide Hydrate Formation Kinetics in Porous Sands

作　　者：关进安 薄文超[1,2,3,4] 王树加 梁德青 GUAN Jinan;BO Wenchao;WANG Shujia;LIANG Deqing(School of Energy Science and Engineering,University of Science and Technology of China,Guangzhou 510640,China;Guangzhou Institute of Energy Conversion,Chinese Academy of Sciences,Guangzhou 510640,China;CAS Key Laboratory of Gas Hydrate,Guangzhou 510640,China;Guangdong Provincial Key Laboratory of Renewable Energy,Guangzhou 510640,China)

机构地区：[1]中国科学技术大学能源科学与技术学院,广州510640 [2]中国科学院广州能源研究所,广州510640 [3]中国科学院天然气水合物重点实验室,广州510640 [4]广东省可再生能源重点实验室,广州510640

出　　处：《新能源进展》2024年第6期725-732,共8页Advances in New and Renewable Energy

基　　金：三亚崖州湾科技专项项目(SCKJ-JYRC-2023-02);广东省自然科学基金项目(2021A1515011515);广东省重点领域研发计划资助项目(2023B1111050014)。

摘　　要：利用水合物封存二氧化碳是一种极具工业应用前景的清洁高效碳捕集、利用与封存新技术。为了研究二氧化碳水合物在多孔介质中的动力学反应过程,设置3组多孔介质体系下的二氧化碳水合物相平衡实验来确定进气压力条件,再设置16组工况开展二氧化碳水合物形成动力学实验,分析20%~50%的初始水饱和度、1~7℃的反应温度对天然沉积砂中水合物反应过程的影响,分析影响多孔介质体系最终耗气量和耗气速率的关键因素。结果表明,多孔介质体系最终储气量取决于初始水饱和度和反应温度,并与初始水饱和度近似呈线性关系,在高初始水饱和度和低反应温度的天然砂体系中,二氧化碳水合物生成反应初始阶段具有更高的耗气速率。The carbon dioxide sequestration method using gas hydrate is a promising new technology for clean and efficient carbon capture,utilization,and storage in industrial applications.To investigate the kinetic reaction process of carbon dioxide hydrate in porous media,three groups of carbon dioxide hydrate phase equilibrium experiments in the porous sand system were conducted to determine the inlet pressure conditions,and 16 groups of working conditions were also set up to carry out the kinetic experiments of carbon dioxide hydrate formation to analyze the effects of 20%-50% initial water saturation and 1-7℃ reaction temperature on the reaction process of hydrate in natural sands.The key factors influencing porous media systems'final gas consumption and gas consumption rate were analyzed.The results show that the final gas storage capacity of the porous media system depends on the initial water saturation and reaction temperature,and is approximately linear with the initial water saturation.The carbon dioxide hydrate generation reaction has a higher gas consumption rate in the initial stage of the carbon dioxide hydrate formation reaction in the natural sand system with high initial water saturation and low reaction temperature.

关 键 词：二氧化碳水合物 相平衡 反应温度 水饱和度 碳封存 

分 类 号：TK01[动力工程及工程热物理] TE991[石油与天然气工程—石油机械设备]