与海洋天然气水合物微纳米尺度赋存和开采储存技术有关的研究进展

Micro-Nano-Scale Studies on Occurrence and Gas Production and Storage Technology of Marine Gas Hydrates

天然气水合物是一类潜在的储量巨大的清洁能源.近年来,水合物的研究已经逐渐拓展至纳米、介观层面.纳米科学贯穿了水合物研究的全过程,包括上游天然气水合物成藏、开采和下游的储运、分离等水合物应用技术,其核心在于研究水合物在纳米材料表面、内部、间隙中生长和分解的传质传热过程.将以第九届国际水合物大会(ICGH9)为切入点,从水合物成藏、开采和下游技术应用几个方面综述近年来水合物研究中的纳米研究进展.目前对水合物的研究尺度并未做到全覆盖,水合物在纳米材料间隙中的传质传热过程研究较少,纳米材料的累积放大效应研究也存在空白.这正是水合物成藏、开采研究中的瓶颈问题.未来的研究应该着眼于水合物在纳米材料中生成和分解的传质传热作用,以此为主线将水合物技术和水合物成藏、开采研究中的核心问题进行统一协同研究.

Natural gas hydrate is a kind of clean energy with potential huge reserves.Hydrate researches gradually extend to nano-and micro-scale recently.Nano science has been a part of hydrate researches,including occurrence,gas production and hydrate based technologies of downstream such as gas storage and separation.The common key is heat and mass transfer of hydrate formation and dissociation on the surface,inside and between nanomaterials.From 9 th international conference on gas hydrates（ICGH9）as point of penetration in this paper,it reviews nano-scale studies on occurrence and gas production of marine gas hydrates,as well as downstream utilizations of gas hydrate technology.The results show that study of heat and mass transfer inside nanomaterial during hydrate formation and dissociation is needed to be developed.There is a blank area that accumulative effect of micro-nanomaterial during hydrate formation and dissociation.These questions have become bottleneck of gas hydrate occurrence and production.In the future,researches should focus on heat and mass transfer inside nanomaterial during hydrate formation and dissociation and use this as a link to systematively study occurrence and production of natural gas hydrates.