【摘要】 对由小分子的烃类及非烃类的N2,CO2等气体和水形成的非计量笼形化合物即气体水合物进行了介绍。从冰点以上和冰点以下两个温区对国内外水合物增长动力学的研究现状进行了分类与评述。对于冰点以上晶体增长的动力学,从半经验模型、传质模型和界面生成的模型3个角度进行了讨论;对冰点以下的增长动力学,讨论了冰熔融模型、冰核收缩反应模型和水合物原位偏离模型。对水合物生成动力学的进一步研究进行了展望。更多还原

【Abstract】 Gas hydrates are non-stoichiometric clathrate compounds formed by certain gases when contacted with water under favorable temperature and pressure conditions, and has extensive application prospect. In this paper the related studies on hydrate growth kinetics were reviewed from point of view of studies above or below ice point. Concerning studies above ice point, crystal growth was reviewed based on semi-empirical models, mass transfer models and equations of hydrate formation occurred on the interface. As for hydrate growth kinetics below ice point, the melting model of ice, shrinking ice-core model and delocalization model were discussed. Future development tendency of hydrate growth kinetics is forecasted.更多还原