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引用次数: 0
摘要
二氧化碳水合物应用广泛,如二氧化碳的分离和捕获以及水合物的冷藏。然而,由于水合物的形成条件存在温度较低或压力较高、诱导时间长、生长速度慢等问题,其工业应用受到了限制。热力学促进剂可以有效改善水合物的形成条件。本文选择哌嗪作为一种新的促进剂,研究其对二氧化碳水合物解离平衡条件的影响。与纯二氧化碳形成结构 I 水合物相比,加入哌嗪后形成结构 II 水合物,且水合物解离条件明显向低压或高温移动。哌嗪浓度越高,促进效果越好。
Influence of Piperazine on CO2 Hydrate Dissociation Equilibrium Conditions
Carbon dioxide hydrate has a broad application such as the separation and capture of carbon dioxide and cold storage in hydrates. However, its industrial application is limited by the problems of hydrate formation conditions of lower temperature or higher pressure, long induction time, and slow growth rate. Thermodynamic promoters can effectively improve the hydrate formation conditions. Piperazine is selected as a new promoter to investigate the influence on carbon dioxide hydrate dissociation equilibrium conditions in this paper. Compared with pure carbon dioxide forming structure I hydrate, the addition of piperazine forms structure II hydrate, and hydrate dissociation conditions significantly move to lower pressures or higher temperatures. The higher the concentration of piperazine, the better the promoting effect.
期刊介绍:
The Journal of Chemical & Engineering Data is a monthly journal devoted to the publication of data obtained from both experiment and computation, which are viewed as complementary. It is the only American Chemical Society journal primarily concerned with articles containing data on the phase behavior and the physical, thermodynamic, and transport properties of well-defined materials, including complex mixtures of known compositions. While environmental and biological samples are of interest, their compositions must be known and reproducible. As a result, adsorption on natural product materials does not generally fit within the scope of Journal of Chemical & Engineering Data.