浮式LNG接收站3×10~4 m^3全容储罐冷却技术研究

Research of cooling technology for 30 000m^3 LNG tank of floating LNG terminal

储罐冷却是LNG储罐调试工作中最关键和最危险的环节之一。针对国内首个浮式LNG接收站3×10~4 m^3LNG储罐冷却过程,进行了冷却方案比选,提出了预冷用LNG量的计算方法,介绍了冷却条件及冷却过程。针对冷却过程中出现的常规问题及非常规问题进行了分析并给出相应的解决方案。研究成果对其他浮式或常规LNG接收站中LNG储罐的冷却具有参考意义。

The cooling down is one of the most important and dangerous work in LNG tank commissioning.In view of the cooling down process of the first 30 000 m^3 LNG storage tank of floating LNG terminal in China,the cooling schemes are compared and the calculation method of LNG for pre-cooling is put forward.Conditions and process of the cooling down are introduced respectively in this paper.Focusing on the conventional and non-conventional problems in cooling down,the corresponding solutions are given.The results of this research have reference value for the cooling down of LNG storage tanks in other floating or conventional LNG terminals.