H型水合物生成过程的实验研究

The Experimental Research for Structure H Hydrate Formation

在恒容条件下,根据水合物的相平衡条件设置4、6、8 K三个不同的过冷度,分析了不同的过冷度对含大客体分子和甲烷体系的H型水合物生成过程的影响,并与纯甲烷水合物的生成过程进行比较,包括诱导时间、生成速率、气体消耗量。本实验所采用的四种大客体分子分别是:环庚烷、环庚酮、环辛烷、甲基环己烷。实验结果表明,过冷度越大,水合物生成的诱导时间越短;环庚酮H型水合物的反应速率最快,且储气效果最佳。

This work studied the influence on structure H hydrate for large-molecule guest substances and methane under different sub-cooling by isochoric methods, including induction time, hydrate formation rate, mole of gas consumed. And the experimental results were compared with pure methane hydrate. The sub-cooling was 4, 6, 8 K and calculated according to the hydrate phase equilibrium data. These four large-molecule guest substances were cycloheptane, cycloheptanone, cyclooctane, methylcyelohe^ane respectively. The results indicated that the induction time become shorter with the higher sub-cooling. And structure H hydrate with cycloheptanone showed the fastest formation rate and the best gas storage effect.