大型LNG储罐高液位运行安全分析与管理研究

Safety Analysis and Management of High Level Operation of Large LNG Storage Tank

调峰型LNG接收站经常出现LNG储罐高液位的状态,而对于储罐容积不小于16万方的LNG储罐而言,储罐液位持续处于高位状态可能存在一定的安全隐患,比如提高了发生罐内液体"翻滚"的概率、提高误触发液位高高报警联锁关断的风险、容易造成超压事故等。本文先后分析大型LNG储罐处于高液位情况下,可能存在的安全生产隐患,进而基于HYSYS动态仿真模拟方法,对LNG储罐处于高液位下可能存在的安全隐患进行分析并提出可行的解决建议,为储罐的安全运营提供参考。

Peak shaving type LNG receiving station often appear LNG storage tank high level status,for the tank volume is not less than 160000 of LNG storage tanks,tank liquid level for high status,there may be some potential safety hazard,such as increased the probability of occurrence tank liquid"roll",improve the misfire liquid level alarm interlock shut off high risk of accidents,easy to cause overpressure.This paper has analyzed the potential safety hazards of large LNG storage tanks at high liquid level,and then based on HYSYS dynamic simulation method,analyzed the potential safety hazards of LNG storage tanks at high liquid level and proposed feasible solutions to provide references for safe operation of storage tanks.