基于CFD的加氢装置氢气燃爆危险性分析
Analysis of Hydrogen Explosion Hazard in Hydrogenation Equipment Based on CFD
王飞1
作者信息
- 1. 中国石化海南炼油化工有限公司,海南儋州 578101
- 折叠
摘要
加氢装置是炼化企业典型的高危装置,涉及氢气等易燃易爆介质,安全风险较高.为研究加氢装置在开敞空间条件下氢气泄漏爆炸事故火焰及冲击波时空演化过程,基于FLACS三维模拟软件对某企业加氢装置建立了等比例模型,并对其进行氢气爆炸模拟研究,探究了不同当量比(ER)对氢气云燃爆超压值及温度的影响.研究结果表明,当量比(ER)在 0.8～1.4 范围内时,氢气爆炸的温度、超压峰值Pmax均随ER的增大呈先增大后减小的趋势,ER为 1.05 时,爆炸温度峰值及超压峰值最大,高温火焰传播范围半径约 35 m,影响面积达到 3 800 m2.此外,模拟结果为类似场景建筑物抗爆工程改造提供了理论指导.
Abstract
Hydrogenation equipment is a typical high-risk device in refining enterprises,involving flamma-ble and explosive media such as hydrogen,with high safety risks.In order to study the spatiotemporal evo-lution process of flames and shock waves in hydrogen leakage and explosion accidents of a hydrogenation device under open space conditions,a proportional model was established based on FLACS three-dimen-sional simulation software for a certain enterprise's hydrogenation device,and hydrogen explosion simu-lation research was conducted on it.The influence of different equivalence ratios(ER)on the overpressure value and temperature of hydrogen cloud ignition and explosion was explored.The research results indica-ted that when the equivalence ratio(ER)was within the range of 0.8～1.4,the temperature and peak o-verpressure Pmax of hydrogen explosion showed a trend of first increasing and then decreasing with the in-crease of ER.When ER was 1.05,the peak explo-sion temperature and peak overpressure were maxi-mum,and the radius of high-temperature flame prop-agation was about 35 m,with an impact area of 3 800 m2.In addition,the simulation results provide theoretical guidance for the anti-explosion engineering renovation of buildings in similar scenarios.
关键词
加氢装置/氢气云燃爆/FLACS三维模拟软件/爆炸冲击波/火焰传播规律/防控措施Key words
hydrogenation equipment/hydrogen cloud explosion/FLACS three-dimensional simulation software/explosion shock wave/flame propagation law/prevention and control measures引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据