多孔介质中甲烷水合物的生成特性研究进展

天然气水合物是一种清洁高效的能源，常常在自然界中的海底沉积物多孔介质孔隙中生成，同时水合物在工业上还能与多孔介质材料一起作为储存及分离气体的一种方式，因此开采利用水合物以及发挥水合物工业技术的前提都跟多孔介质有莫大的关系，对多孔介质中天然气水合物生成特性的研究进行总结与分析具有非常重要的意义。本文总结分析了国内外关于不同类型多孔介质中甲烷水合物的生成过程及特性的研究文献，将多孔介质根据其孔径大小进行划分。结果显示，在微孔介质中，甲烷水合物的生成侧重于气体的存储及运输方面；在介孔介质中，甲烷水合物的生成动力学受孔径影响较大；在大孔的沉积物中，甲烷水合物的生成及分布的机理性研究仍比较缺乏。因此，需要进一步的研究来丰富甲烷水合物在多孔介质中的生成动力学理论，本文将在文献调研的基础上为今后的研究方向提出一些展望和思路。

Research Progress on Methane Hydrate Formation Kinetics in Porous Media

Natural gas hydrate is a clean and efficient energy source and it was found abundantly in natural sediment pores under the deep sea. Gas hydrate also can be used as a means of gas storage and separation technology. Therefore, hydrate formation in porous media is the foundations of hydrate exploitation and utilization in industrially. The study of gas hydrate formation kinetics in porous media has a very important significance. The research progress on methane hydrate formation kinetics and characteristics in different porous media were summarized in this paper. In micro pore size porous media, methane hydrate formation research focused on methane gas storage and transportation. Methane hydrate formation properties can be influenced significantly by porous diameter in mecro pore size porous media. Methane hydrate formation and distribution mechanism in sediment pore size were still invisible. Therefore, further studies are necessary to enrich the kinetic theory of methane hydrate formation in porous media. Finally, a number of prospects and ideas for future work were proposed according the previously research achievements.