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

JIA Hongrui; CHEN Junwen; WANG Chunhui; WANG Wuchang; LI Tianlei; LI Ke; HAN Hui; LI Yuxing

doi:10.12434/j.issn.2097-2547.20240163

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

- Study on leakage and dispersion simulation of hydrogen station based on FLACS
- Vol. 49, Issue 9, Pages: 133-140(2024)
- 作者机构：
  
  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
- 作者简介：
- 基金信息：
- DOI：10.12434/j.issn.2097-2547.20240163
  CLC： TK91;TE09
- Published：25 September 2024，
  
  Received：17 April 2024，
  
  Revised：08 May 2024，
- 稿件说明：
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贾红蕊,陈俊文,王春辉等.基于FLACS的氢气站场泄漏扩散模拟研究[J].低碳化学与化工,2024,49(09):133-140.

JIA Hongrui,CHEN Junwen,WANG Chunhui,et al.Study on leakage and dispersion simulation of hydrogen station based on FLACS[J].Low-carbon Chemistry and Chemical Engineering,2024,49(09):133-140.
贾红蕊,陈俊文,王春辉等.基于FLACS的氢气站场泄漏扩散模拟研究[J].低碳化学与化工,2024,49(09):133-140. DOI： 10.12434/j.issn.2097-2547.20240163.

JIA Hongrui,CHEN Junwen,WANG Chunhui,et al.Study on leakage and dispersion simulation of hydrogen station based on FLACS[J].Low-carbon Chemistry and Chemical Engineering,2024,49(09):133-140. DOI： 10.12434/j.issn.2097-2547.20240163.

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。

Abstract

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

Keywords

hydrogen stationleakage dispersionsimulationobstaclesflammable gas clouddispersion range

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