水合物储气促进技术研究进展  

Progress on promotion technology for gas storage in hydrates

作　　者：代梦玲 孙志高[1] 李娟[1] 李翠敏[1] 黄海峰[1] DAI Mengling;SUN Zhigao;LI Juan;LI Cuimin;HUANG Haifeng(School of Environment Science and Engineering,Suzhou University of Science and Technology,Suzhou 215009,Jiangsu,China)

机构地区：[1]苏州科技大学环境科学与工程学院,江苏苏州215009

出　　处：《化工进展》2020年第10期3975-3986,共12页Chemical Industry and Engineering Progress

基　　金：江苏省高校自然科学研究重大项目(16KJA480001);江苏省自然科学基金(BK20170382);苏州市科技计划(SNG2018048);江苏省研究生科研创新计划(SJCX19-0948,SJCX19-0830)。

摘　　要：气体水合物是一种笼形晶体化合物,单位体积的水合物可包含标准状况下160~180(v/v)的天然气,是一种潜在的固态天然气储运方法,受到广泛关注。由于天然气在水中溶解度小,天然气水合物在纯水中通常难以形成,形成的水合物中天然气含量也不高。为提高水合物储存天然气的密度,提高水合物生长速度,研究者探索了多种促进水合物形成的方法,如物理强化以及热力学与动力学促进剂等化学强化方法。本文总结了搅拌、喷雾、鼓泡等机械方法和向水合体系中添加热力学促进剂、动力学促进剂等方法对水合物形成和储气能力的影响,讨论了这些技术措施影响水合物形成与储气能力的机理。指出表面活性剂与其他促进技术的协同是改善水合物生长和储气密度的有效方法,其复合作用机理有待进一步研究。Gas hydrate is a cage-shaped crystalline compound.Hydrates may be used to store and transport natural gas as the hydrates may store 160—180(v/v)natural gas,and it has been paid more attentions.Due to the low solubility of natural gas in water,natural gas hydrates are often difficult to form,and the natural gas encaged in the hydrates is not much in pure water.In order to increase the storage capacity of natural gas in hydrates and the growth rate of hydrates,some methods were used to promote hydrate formation,such as physical and chemical methods.The effects of the stirring,spraying,bubbling,thermodynamic and kinetic additives on gas storage capacity in hydrates were discussed.The effect mechanisms of the above methods were also analyzed.It is an effective method to combine surfactants and other promoters for gas storage in hydrates.But the cooperated mechanism between them is needed to be further studied.

关 键 词：水合物 天然气 储存 强化 添加剂 相平衡 表面活性剂 多孔介质 

分 类 号：TK02[动力工程及工程热物理]