某LNG装车区槽罐车液化天然气泄漏风险数值模拟

Numerical study of LNG leakage and dispersion in loading area

以某LNG装车区为模型,根据LNG火灾形式及特点,采用FLACS软件模拟LNG装车区槽罐车泄漏产生的危害。爆炸伤害范围通过蒸气云扩散模型、液池火灾模型、蒸气云团爆炸模型分别进行模拟分析。通过建立扩散模型,分析LNG在环境条件下不同位置的扩散状态及浓度、热辐射通量以及爆炸冲击量,为进一步优化LNG消防安全管理以及消防应急预案制定提供参考。

Taking a LNG loading area as a model,according to the form and characteristics of LNG fire,FLACS software is used to simulate the hazards caused by tank car leakage in the LNG loading area.The scope of explosion damage is simulated and analyzed by steam cloud diffusion model,liquid pool fire model and steam cloud explosion model respectively.Through the establishment of diffusion model,the diffusion state and concentration,thermal radiation flux and explosion impact of LNG at different locations under environmental conditions are analyzed,providing reference for further optimizing LNG fire safety management and formulating fire emergency plans.