高压下乙炔水合物的形成与分解实验研究

Experimental Study on Formation and Decomposition of C_2H_2 Hydrate

气体水合物是水和气体在高压低温下形成的一种笼形结晶化合物,具有强大的储气能力。关于水合物的形成、性质特征及能源利用、储存方面的研究日益受到重视,进行水合物研究的实验装置和测试技术也在不断发展,目前多数研究侧重于甲烷、二氧化碳等气体的水合物,对乙炔气体水合物的详细研究未见相关报道。文章基于自行设计的水合物合成及原位观测装置,采用化学反应生成气体的方法提供乙炔气源,在此基础上对乙炔水合物合成的条件进行讨论,得出了乙炔形成与分解规律的初步结果,可为进一步研究乙炔水合物及应用于乙炔气体的储运等提供参考。

Gas hydrates are crystalline, clathrate compounds, which have an extraordinary ability of gas storage. Hydrate formation, and its characteristics, properties, energy utilization, gas storage, model equipment and testing method have drawn much attention. At present, the most research focuses on the studies of methane hydrate, carbon dioxide hydrate and others, but a detailed research on C2H2 hydrate has not been reported yet. In the present work, behaviors of C2H2 hydrate formation and decomposition were investigated with a lab-designed high-pressure cell. C2H2 gas source was provided by a chemical reaction. Phase equilibrium of C2H2 hydrate is discussed in this paper. The initial data of C2H2 hydrate formation and decomposition were obtained. Our results may be helpful to a further study on the C2H2 hydrate and the C2H2 gas storage and transportation.