基于ALOHA软件的丙烯储罐泄漏扩散模拟

Simulation of Leakage Accidents of Propylene Tank by ALOHA

基于重气扩散模型,用ALOHA软件模拟研究了大气温度、环境风速、泄漏口直径、泄漏口高度和储罐充填率对丙烯储罐丙烯泄漏扩散事故的影响范围,并分析了事故场景对丙烯储罐下风向1300m处敏感点的影响。结果表明:丙烯蒸气云的最大扩散距离会随着大气温度和储罐泄漏口直径的增加而增大,且线性相关;随着环境风速增加而减小;储罐泄漏口高度和储罐充填率对丙烯毒气的最大扩散距离无显著影响;丙烯储罐泄漏导致的丙烯气体扩散事故可能对敏感点处人员健康造成影响。研究结果可为丙烯储罐的安全管理及事故预防提供参考。

Based on the heavy gas diffusion model,the influence range of atmospheric temperature,ambient wind speed,leak diameter,leak height and storage tank filling rate on the propylene leakage and diffusion accidents of propylene storage tanks was simulated and studied by ALOHA software,and the impact of accident scenarios on propylene leakage and diffusion accidents was analyzed.The influence of the sensitive point at 1300m downwind of the propylene storage tank.The results show that the maximum diffusion distance of the propylene vapor cloud increases with the increase of the atmospheric temperature and the diameter of the tank leak,and it is linearly correlated;it decreases with the increase of the ambient wind speed;the height of the tank leak and the filling rate of the tank have no significant effect on the maximum diffusion distance of propylene poisonous gas;the propylene gas diffusion accident caused by the leakage of propylene storage tank may affect the health of personnel at sensitive points.The research results can provide reference for the safety management and accident prevention of propylene storage tanks.