天然气水合物储运技术研究

针对水合物的4种结构,对其性质的各个方面进行了分析,结果表明,H型水合物在4种结构水合物中最有利于储存.通过对比在合成试验中对温度、压力、水合物生成促进剂和活性剂等条件的研究,认为目前H成H型水合物的最佳促进剂为甲基环己胺,还可以找到更合适的促进剂来生成H型水合物.研究表明,在甲烷中加入环戊烷时温压条件最易达到,但生成的是Ⅱ型水合物,储气量较小.

Experimental Preparatory of Gas Hydrate Storage

Gas hydrate storage involves many factors,such as hydrate structures,temperature-pressure conditions in hydrate formation and dissociation, etc.. Experimental technology is available to study the problem. Based on previous work of four hydrate structuresm it analysis their characteristics and structure H is found to be the best structure to storage gas hydrate. According to comparing various hydrate promotors and their experimental conditions,it indicates that methylcyclohexane is a good promotor to form structure H hydrates,better ones should be found out,however. So far,the best temperature-pressure condition is in the methane-cyclopentane system. But it forms structure II hydrates, whose storage capacity is not so good. It can be confirmed by calculating the gas storage ratio of hydrates formed with different promotors.