浮式生产装置LNG预冷天然气分液罐泄漏扩散模拟研究

Simulation of Leakage and Diffusion of Liquid Natural Gas on Pre-cooling Natural Gas Separating Tanks on Floating Production Units

针对海洋工程中重气的泄漏而导致严重后果的问题,归纳国内外的重气研究结论,基于海上浮式生产装置的预冷天然气分液罐,建立了不同风速场、不同宽度的分液罐泄漏模型,对其进行了重气泄漏后的扩散模拟,得到了扩散后影响的区域结果,并提出了改进措施,为海上浮式生产装置的安全保障提供指导。

Leakage of heavy gas is one of the most dangerous accidents which happen on floating production units at sea. Concluding the researches from home and abroad, the separating tanks leakage model of different wind speeds and different widths are established on the basis of pre-cooling natural gas separating tanks on floating platform. The diffusion simulation of dense gaseous leakage is modeled. The effect of the leakage is then studied and the improving methods are given, which ean provide guidance for the safety of floating produetion units at sea.