基于FLACS的氢气站场泄漏扩散模拟研究  

Study on leakage and dispersion simulation of hydrogen station based on FLACS

作　　者：贾红蕊 陈俊文 王春辉 王武昌[1] 李天雷 李科 韩辉 李玉星[1] JIA Hongrui;CHEN Junwen;WANG Chunhui;WANG Wuchang;LI Tianlei;LI Ke;HAN Hui;LI Yuxing(Shandong Key Laboratory of Oil&Gas Storage and Transportation Safety,College of Pipeline and Civil Engineering,China University of Petroleum(East China),Qingdao 266580,Shandong,China;CPECC Southwest Company,Chengdu 610041,Sichuan,China;Xi’an Changqing Petroleum Technology Co.,Ltd.,Xi’an 710018,Shaanxi,China)

机构地区：[1]中国石油大学(华东)储运与建筑工程学院山东省油气储运安全重点实验室,山东青岛266580 [2]中国石油工程建设有限公司西南分公司,四川成都610041 [3]西安长庆石油科技有限责任公司,陕西西安710018

出　　处：《低碳化学与化工》2024年第9期133-140,共8页Low-Carbon Chemistry and Chemical Engineering

基　　金：国家重点研发计划(2021YFB4001603);中国石油集团工程股份有限公司课题(2021ZYGC-03-01)。

摘　　要：氢能作为一种清洁能源将被大规模开发利用,氢气长输管道和沿线站场建设也随之增加。为研究不同条件下氢气泄漏扩散规律,建立了氢气站场FLACS三维模型。在障碍物存在下,对不同泄漏压力、泄漏孔径和泄漏温度下氢气的泄漏扩散进行了模拟,对比了可燃气云的扩散范围,分析了不同因素的影响规律。结果表明,障碍物使氢气泄漏方向发生改变,可燃气云的扩散范围快速增大,工况7中,7 s内(8~15 s)可燃气云面积快速增加至整个站场面积的73.3%。泄漏压力和泄漏孔径增加均可使可燃气云的扩散范围增加:对于4 MPa低压泄漏,泄漏孔径变化影响更加显著;对于100 mm大孔泄漏,泄漏压力变化影响更加显著。泄漏温度从293 K增加到353 K,氢气分子热运动加快,但泄漏温度变化对气云扩散范围的影响并不明显。本研究可为氢气站场泄漏事故的防治提供参考。As hydrogen energy,a clean energy source,is to be developed and utilized on a large scale,the construction of long-distance hydrogen pipelines and related stations along the route is also increasing.To study the dispersion patterns of hydrogen leakage under different conditions,a three-dimensional FLACS model of the hydrogen station was established.Simulations of hydrogen leakage and dispersion were conducted under different leakage pressures,leakage apertures,and leakage temperatures in the presence of obstacles.The dispersion ranges of flammable gas clouds were compared,and the influencing factors were analyzed.The results show that obstacles cause changes in the direction of hydrogen leakage,leading to a rapid increase in the dispersion range.In scenario 7,within 7 s(8 s to 15 s),the area of the flammable gas cloud rapidly increases to 73.3% of the entire station area.The increase of leakage pressure and leakage aperture both result in a larger dispersion range of the flammable gas cloud.For low-pressure leakage at 4 MPa,the change in leakage aperture has a more significant impact,while for large aperture leakage at 100 mm,the change in leakage pressure has a more significant impact.When the leakage temperature increases from 293 K to 353 K,the thermal motion of hydrogen molecules accelerates,but the change in leakage temperature does not significantly affect the dispersion range of the gas cloud.This study can provide a reference for the prevention and control of leakage accidents in hydrogen station.

关 键 词：氢气站场 泄漏扩散 模拟 障碍物 可燃气云 扩散范围 

分 类 号：TK91[动力工程及工程热物理] TE09[石油与天然气工程]