富气相和富液相中制备天然气水合物的方法

天然气水合物的制备是天然气水合物储运最主要的环节。由于天然气水合物的形成要经过气体溶解、晶核生成和晶体生长等阶段,而天然气组分气体在水中的溶解度很小,水合物只能在气、液界面形成,水合物的自然生成速度十分缓慢,远远不能满足工业应用的需要。因此该技术成功应用的关键在于如何强化天然气水合物快速生成。介绍了几种国内外在富气相和富液相环境下强化制备天然气水合物的方法,分析了各自的优缺点,并对天然气水合物强化制备技术进行了总结与展望。

Method For Natural Gas Hydrate Formation Under Rich Gas Environment And Rich Liquid Environment

The preparation of natural gas hydrate is the most important part of natural gas storage and transportation.The formation of natural gas hydrate will go through a series of stages such as the gas dissolving,nucleation and crystal growth.However,the solubility of natural gas component gases in water is very small.Hydrate formation happens only at gas-liquid interface.The natural formation rate of natural gas hydrate is so slow that it is far from being able to meet the needs of industrial applications.So the rapid formation of natural gas hydrate is key to the application of this technology in the field of natural gas transportation and storage.This paper introduces several methods of hydrate formation under the rich gas and rich liquid environment at home and abroad,and analyzes their advantages and disadvantages.The method for promoting natural gas hydrate rapid formation is summarized and prospected.