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多孔介质内甲烷水合物生成动力学研究
引用本文:王山榕,刘卫国,杨明军,宋永臣.多孔介质内甲烷水合物生成动力学研究[J].热科学与技术,2019,18(3):173-178.
作者姓名:王山榕  刘卫国  杨明军  宋永臣
作者单位:大连理工大学海洋能源利用与节能教育部重点实验室
基金项目:国家自然科学基金项目(面上项目,重点项目,重大项目)
摘    要:天然气水合物作为一种潜在的新型潜在替代能源,分布广泛、储量巨大。水合物生成动力学特性对于了解自然界天然气水合物形成规律与水合物相关技术应用具有重大意义。针对甲烷水合物生成动力学特性进行研究,设计开发了甲烷水合物生成测试系统,研究了不同温度和不同孔隙粒径的多孔介质对于水合物生成动力学的影响。结果表明,随着温度的降低以及多孔介质孔隙粒径的减小,甲烷水合物生成过程中的气体消耗速率越快,生成结束时消耗的气体的量越多。同时,利用水合物生成多步骤机制模型,获得了甲烷水合物生成过程各中间产物的变化规律。

关 键 词:气体水合物  成核  生长  生成动力学
收稿时间:2018/7/13 0:00:00
修稿时间:2018/11/2 0:00:00

Kinetics of methane hydrate formation in porous media
Wang Shanrong,Liu Weiguo,Yang Mingjun and Song Yongchen.Kinetics of methane hydrate formation in porous media[J].Journal of Thermal Science and Technology,2019,18(3):173-178.
Authors:Wang Shanrong  Liu Weiguo  Yang Mingjun and Song Yongchen
Affiliation:Dalian University of Technology,Dalian University of Technology,Dalian University of Technology,Dalian University of Technology
Abstract:As a potential new alternative energy, natural gas hydrate is widely distributed and has huge reserves. The kinetic characteristics of hydrate formation are of great significance for understanding the laws of natural gas hydrate formation in nature and the application of hydrate technology. In view of the kinetic characteristics of methane hydrate formation, methane hydrate formation test system was designed and developed. The effects of porous media with different particle size and different temperature on the kinetics of hydrate formation were studied. The results show that with the decrease of temperature and the decrease of particle size of porous media, the rate of gas consumption was faster during the formation of methane hydrate, and the more gas were consumed at the end of the formation. At the same time, by using the multi-step mechanism model of hydrate formation, the change rules of the intermediate products in the process of methane hydrate formation were obtained.
Keywords:Gas hydrate  nucleation  growth  formation kinetics
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