张学民^1,2,贺冠宇^1,2,王佳贤^1,2,李金平^1,2,王英梅^1,2,吴青柏^1,3

• 1:兰州理工大学 能源与动力工程学院，甘肃 兰州 730050
• 2:甘肃省生物质能与太阳能互补供能系统重点实验室，甘肃 兰州 730050
• 3:中国科学院西北生态环境资源研究院冻土工程国家重点实验室，甘肃 兰州 730050

摘要(Abstract)：

为了研究液化条件对多孔介质中CO₂水合物生成过程的影响机制及其规律，在初始压力为3.9、4.2、4.5、4.8和5.1 MPa，温度为273.5、274.5和275.5 K条件下研究粒径为700 μm的石英砂介质中CO₂水合物的生成过程。结果表明：在相同条件下，随着初始压力的增加，多孔介质中CO₂水合物的生成速率逐渐增大；当压力低于液化压力时，随着初始压力的增加，CO₂水合物的生成速率逐渐增大，且温度越高，水合物生成速率增加的趋势越明显；当CO₂气体压力达到液化压力时，随着初始压力的不断升高，CO₂水合物的生成速率明显增大；多孔介质中CO₂水合物的最大生成速率达到了9.297×10^-3 mol·s^-1。研究结果进一步表明：液化可有效强化多孔介质中CO₂水合物的生成过程，提高CO₂水合物的生成速率。

关键词(KeyWords)： CO₂水合物;多孔介质;液化条件;生成速率;强化作用

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51906093)；甘肃省高等学校创新基金(2023A-030)；广东省新能源和可再生能源研究开发与应用重点实验室开放基金(E239kf1201)；兰州理工大学“红柳优秀青年人才支持计划”(2018)。

作者(Author): 张学民^1,2,贺冠宇^1,2,王佳贤^1,2,李金平^1,2,王英梅^1,2,吴青柏^1,3

DOI: 10.3969/j.issn.1003-9015.2023.04.011

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