气体水合物平衡生成条件的测定及预测

Measurement and Prediction of the Equilibrium Formation Conditions for Gas Hydrates

建立了一套气体水合物实验测定装置，采用该装置在温度２６２．６～２８５．２Ｋ范围内分别测定了甲烷、二氧化碳和一种合成天然气在纯水、电解质水溶液以及甲醇水溶液中水合物的平衡生成压力，共计９个体系，７８个数据点。其中甲烷在５％（质量）碳酸氢钠水溶液和合成天然气水合物的生成条件在文献中未见有数据报导。简化了Ｚｕｏ等提出的水合物理论预测模型并对所测数据进行了计算，结果表明：简化了的该模型可以较好地预测含电解质、甲醇体系的水合物平衡生成条件。

A new experimental apparatus for measuring gas hydrate formation conditions was set up. In the temperature range from 262.6 to 285.2K, the hydrate formation data in pure water and in the presence of electrolytes/methanol were measured for methane, carbon dioxide and a synthetic natural gas mixture (a total of 9 systems and 78 data points). It was found that the simplified hydrate model proposed by Zuo et al. performed well for the systems tested.