Metastable state of gas hydrate during decomposition: A novel phenomenon

作     者：Ronghui Sun Zhen Fan Lei Yang Yuanping Li Xin Lü Yang Miao Ronghui Sun;Zhen Fan;Lei Yang;Yuanping Li;Xin Lü;Yang Miao

作者机构：Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of EducationDalian University of TechnologyDalian 116023China School of ChemistryUniversity of GlasgowGlasgow G128QQUnited Kingdom 3 Institute of Science and TechnologyShenzhen BranchChina National Offshore Oil CorporationGuangzhou 510420China CNOOC Research Institute Co.LtdBeijing 100028China Xingang Shipbuilding Heavy Industry Co.Ltd.Tianjin 300452China 

出 版 物：《Chinese Journal of Chemical Engineering》 (中国化学工程学报（英文版）)

年 卷 期：2020年第28卷第4期

页      面：949-954页

核心收录：

学科分类：0820[工学-石油与天然气工程] 08[工学] 082002[工学-油气田开发工程] 

基　　金：supported by the National Key R&D Program of China(Grant Nos.2018YFC0310006 and 2017YFC0307300) the National Natural Science Foundation of China(Grant Nos.51806027 and 51890911) PetroChina Innovation Foundation 

主　　题：Hydrates Dissociation Metastability Self-preservation Supersaturation 

摘      要：Natural gas hydrates are solid compounds with cage-like structures formed by gas and *** intriguing phenomenon that gas hydrates can dissociate at a low rate below the ice freezing point has been viewed as the metastability of *** mechanisms of hydrate metastability have been widely studied,and many mechanisms were proposed involving the self-preservation effect,supercooled water-gas-hydrate metastable equilibrium,and supersaturated liquid-gas-hydrate system *** metastable state of hydrate could be of crucial significance in the kinetics of hydrate formation and decomposition,heat and mass transfer during gas production processes,and the application of hydrate-based technique involving desalination,energy storage and transportation,and gas separation and *** researches have systematically considered this phenomenon,and its mechanism remains *** this work,various mechanisms and hypothesis explaining the metastable state of gas hydrates were introduced and *** studies are still required to reveal the intrinsic nature of this metastable state of gas hydrate,and this work could give some implications on the existing theory and current status of relevant efforts.