Leakage and diffusion law and safety range of liquid phase ethane pipeline
Liquid phase ethane will vaporize when it leaks into the air,and the distribution of ethane volume fraction and temperature fields is relatively complex.A two-dimensional liquid phase ethane pipeline leakage diffusion model was established by using Fluent software,and the volume fraction and temperature field distributions under different conditions were simulated and calculated.The effects of wind speed and leakage rate on the ethane leakage diffusion process were analyzed.The results show that according to the diffusion law of ethane leakage,the leakage diffusion process can be roughly divided into four stages:injection,gravity settling,transition diffusion and passive diffusion.The higher the wind speed,the stronger the transport effect of air on ethane gas clouds,and the greater the distance of diffusing to hazardous volume fraction and low-temperature frostbite.The larger the leakage rate,the more intense the heat exchange between ethane and air,and the greater the distance of diffusing to hazardous volume fraction and low-temperature frostbite.The relationship between the leakage rate,wind speed and the farthest distance of diffusing to hazardous volume fraction and low-temperature frostbite at a leakage rate of 10-120 kg/s and wind speed of 2.5-7.5 m/s is fitted.
万方数据
维普
