气水合物形成时的诱导时间定义辨析

以气水合物形成过程中的诱导现象为基础,借助于微观和宏观概念对各种理论模型提出的诱导时间定义进行了归纳和总结,分析了其中的区别和联系.进一步明确了诱导时间及其相关时间间隔段的含义及特殊状况下诱导时间的确定方法.为使诱导时间的测量更具操作性和定义具有普遍适用性,切实将其作为判断促进剂或抑制剂影响水合物形成动力学的依据,建议将诱导时间定义为从反应开始到系统某状态参数发生急剧变化所经历的时间,即系统从水合反应开始到产生大量可视晶体所需要的时间.

Dischmination of the definition of induction time in gas hydrate formation

On the basis of induction phenomenon during gas hydrate formation,the definitions of induction time developed according to different theories,were summarized and analyzed by means of the micro and macroconception.The relationship between induction time and other time intervals was further examined,and the induction time for special situation was also introduced.In order to measure the induction time easily and make a clear definition of induction time be taken as an effective way to judge the promoter or inhibitor in application,it is suggested that the induction time can be defined as the time interval from the reaction beginning to the moment that one parameter of the system changes sharply,i.e.from the start of the hydrate reaction to the moment that the abundant detective nuclei appear.In this way,the induction time can be connected with some of the measurable parameters,which makes the definition of induction time more practical and applicable.It is expected that an unambiguous definition of induction time when used as an effective criterion will have an active effect on the development of storage and transportation industry of the gas hydrates as well as some relative technical field.