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*,夏威夷,党媛媛,程露萍:中国计量大学质量与安全工程学院,浙江 杭州
摘要:为了呈现化工企业储罐液氯泄漏扩散规律,以期为泄漏事故应急管理提供技术参考,利用数值模拟的方法,研究了液氯储罐破裂时不同条件下氯气的泄漏、扩散以及蔓延规律。模拟结果显示,泄漏口大小、风速、泄漏速度以及周边植被对于氯气的扩散有较为明显影响;2.5 m/s风速时,1800 s内氯气对人体造成伤害的最大扩散距离可达近180 m,有植被情况下可缩小约40 m;风速大于2.5 m/s时,风流起到稀释氯气浓度作用。
Abstract:In order to present the leakage and diffusion law of liquid chlorine in chemical storage tanks, and provide technical reference for emergency management of leakage accidents, the leakage, diffusion and propagation of chlorine gas under different conditions of liquid chlorine storage tank rupture were studied based on numerical simulation. The simulation results show that the leakage size, wind speed, leakage speed and surrounding vegetation have a significant impact on the diffusion of chlorine; when wind is moving at a speed of 2.5 m/s, the maximum diffusion distance of chlorine gas in the 1800 s to hurt the human can reach nearly 180 m, in contrast with the value, it has been reduced by about 40 m with surrounding vegetation. When the wind speed is greater than 2.5 m/s, the wind flow taken on a role to dilute the chlorine concentration.
文章引用:季一丹, 刘辉, 夏威夷, 党媛媛, 程露萍. 化工企业液氯泄漏事故后果模拟分析[J]. 化学工程与技术, 2018, 8(5): 301-309.