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针对液态天然气的储存,不同的充装方式、氮的含量以及罐内液体老化均可以引起分层。国外理论模型Bates-Morrison和国内理论模型四阶段模型分别对储罐内的分层与翻滚做了最新的分析,大量的研究表明:储罐的初始密度差不仅会影响罐内的压力变化和蒸发率,还和发生翻滚的早晚与剧烈程度有关,而且发现翻滚存在一个临界密度差,一般为2~5kg/m~3。
For liquid natural gas storage, different filling methods, nitrogen content and tank liquid aging can cause delamination. The overseas theoretical model Bates-Morrison and the four-stage model of the domestic theoretical model are the latest analysis of the stratification and tumbling within the tank, a large number of studies have shown that: the initial tank density difference will not only affect the tank pressure changes and evaporation Rate, but also the occurrence of tumbling sooner or later and the degree of severity, and found that there is a tumbling threshold density difference, usually 2 ~ 5kg / m ~ 3.