高含硫天然气管道泄漏扩散数值模拟  

Numerical Simulation of Release and Dispersion Process from High Sulfur-containing Natural Gas Pipeline

作　　者：胡金文[1] 马贵阳[1] 王红莹[1] 牛罡 王健[1] 刘畅[1] 

机构地区：[1]辽宁石油化工大学石油天然气工程学院,辽宁抚顺113001

出　　处：《节能技术》2011年第5期418-423,共6页Energy Conservation Technology

摘　　要：天然气在集输过程中,由于管道老化、腐蚀等因素引起的泄漏事故时有发生,其中以小孔径泄漏事故发生概率偏大。本文利用软件对高含硫天然气小孔径泄漏进行数值模拟,模拟结果显示,泄漏气体中甲烷和硫化氢的扩散范围、浓度含量、烟云高度受风速影响明显。高含硫天然气管道小孔径泄漏后,在环境风速8 m/s时,泄漏形成的危险区域沿地面向下风向扩散,风速越大,泄漏烟云偏转越剧烈。对于小孔径泄漏,风速的大小限定了泄漏气体扩散运动的轨迹,从而也决定了硫化氢和甲烷组分浓度含量的危险区域。In the process of gathering and transportation of natural gas, leakage accidents happen occasionally caused by pipeaging and other factors, among which small aperture leakage is of high probability. This article adopts numerical software to simulate the small aperture leakage of high sulfur - containing gas. Simulation results show that, the spread scope, concentration and cloud height of methane and H2S are obviously affected by the wind speed. With the ambient wind speed around 8 m/s, the dangerons area of leakage gas diffuses towards downwind direction, and the Thus, as to small aperture leakage, the wind speed determines the dangerous area of H2S and methane concentration. defection increases with the wind speed. the dispersion route of the leakage gas and

关 键 词：泄漏扩散 SIMPLE算法 高含硫天然气 数值模拟 

分 类 号：TE832.2[石油与天然气工程—油气储运工程]