高含硫天然气管道泄漏H_(2)S扩散规律研究  

Study on the H_(2)S diffusion law of high sulfur gas pipeline leakage

作　　者：苏诗漫 王浩丞 史春艳[1] 刘名名 SU Shiman;WANG Haocheng;SHI Chunyan;LIU Mingming(Southwest Branch Company of Oil Gas Field Northeast Gas Mine Xuanhan Gas Sampling Operation,Dazhou 635000,China;College of Energy,Chengdu University of Technology,Chengdu 610059,China)

机构地区：[1]中国石油西南油气田分公司川东北气矿,四川达州635000 [2]成都理工大学能源学院,成都610059

出　　处：《成都理工大学学报（自然科学版）》2024年第1期130-136,共7页Journal of Chengdu University of Technology: Science & Technology Edition

基　　金：四川省区域创新合作基金项目(2023YFQ0111)。

摘　　要：在高含硫天然气管道中,泄漏事故的风险较高,一旦事故发生,将对周围建筑和居民安全构成严重威胁。本研究聚焦于含5%硫化氢(H_(2)S)的天然气管道,利用计算流体力学方法对水平泄漏扩散进行了数值模拟。特别研究了风速对泄漏口上游建筑各楼层硫化氢体积分数的影响。主要发现包括:(1)通过在仿真的房屋模型中各楼层设置监测点,观察到随着楼层增高,H_(2)S气团扩散至房间的时间显著缩短。(2)随着风速的变化,位于高层(第11层至第24层)的房间内H_(2)S气团扩散时间随风速的增加而减少。而对于低层(第1层至第10层)的房间,在风速低于9 m/s时,H_(2)S气团扩散时间随风速增加而延长;但当风速超过9 m/s时,扩散时间随风速增加而缩短。这些结果为高含硫天然气管道泄漏事故的应急响应和安全管理提供了重要参考。High sulfur gas pipelines pose a significant threat of leakage accidents,which can endanger individuals residing in surrounding structures.This study examined the dispersion of horizontal leakage in natural gas pipelines containing 5%hydrogen sulfide(H_(2)S)through numerical simulations using a computational fluid dynamics approach.The study examined the impact of wind speed on the volume ratio of H_(2)S on each story of a building upstream of a leakage.Key results showed that(1)a significant reduction in the time taken for H_(2)S gas mass to diffuse into a room occurs with an increase in story height,as observed through monitoring points installed at each story in the simulated house model.(2)The diffusion time of H_(2)S air masses in upper floor rooms(from the 11th to the 24th floors)decreased with increasing wind speed.Conversely,the H_(2)S gas cluster diffusion time in lower floor rooms(from the 1st to the 10th floors)was prolonged with greater wind speeds when the wind speed was lower than 9 m/s;however,the diffusion time became shorter as the wind speed exceeded 9 m/s.These results provide an important reference for emergency response and safety management of high sulfur gas pipeline leakage accidents.

关 键 词：天然气管道 数值模拟 泄漏扩散 硫化氢 

分 类 号：TE973.6[石油与天然气工程—石油机械设备]