液氨储罐泄漏扩散距离的数值模拟  

Simulation of leakage and diffusion of liquid ammonia in tank area

作　　者：关文玲[1] 王宏伟 刘柳 李俊洁 GUAN Wenling;WANG Hongwei;LIU Liu;LI Junjie(School of Environmental Science and Safety Engineering,Tianjin University of Technology,Tianjin 300384,China)

机构地区：[1]天津理工大学环境科学与安全工程学院,天津300384

出　　处：《天津理工大学学报》2023年第2期51-57,共7页Journal of Tianjin University of Technology

基　　金：国家自然科学基金青年项目(21206064)。

摘　　要：液氨泄漏后可能会对周边人群引起中毒事故,泄漏影响距离的确定可以为应急方案提供定量参考,文中研究了不同的风速和泄漏速度对液氨泄漏距离的影响。结果表明:不同风速,同一泄漏速度下的最高氨气体积分数相同,说明泄漏过程中,最高氨气体积分数数值是由泄漏速度决定的。泄漏速度越大,最高氨气体积分数数值越大。在同一泄漏速度下,风速越大,氨气在Y轴上的扩散距离越小,在X轴上的扩散距离越大。在同一风速下,泄漏速度越大,泄漏的氨气在Y轴和X轴上的扩散距离越大。随着泄漏速度的增大,风速对氨气在X轴上扩散距离的影响降低。After the liquid ammonia leakage,it may cause poisoning accidents to the surrounding people.The determination of the influence distance of the leakage can provide quantitative reference for any emergency plan.The influence of different wind speeds and leakage speeds on the leakage distance of liquid ammonia is studied.The results show that the maximum ammonia volume fraction is the same under different wind speeds and the same leakage speed,and the maximum ammonia volume fraction is determined by the leakage speed in the leakage process.The higher the leakage rate is,the higher the maximum ammonia volume fraction is.At the same leakage speed,the wind speed is higher,the diffusion distance of ammonia gas on Y axis is smaller and the diffusion distance of ammonia gas on X axis is larger.At the same wind speed,the leakage velocity is greater,the diffusion distances of the ammonia gas on Y axis and X axis are greater.With the increase of leakage velocity,the influence of wind speeds on the diffusion distance of ammonia along the X axis decreases.

关 键 词：储罐 液氨:泄漏扩散 数值模拟 

分 类 号：X93[环境科学与工程—安全科学]