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催化重整单元氢气气团爆炸超压分析
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  • 英文篇名:Explosion overpressure of hydrogen cloud in catalytic reforming process
  • 作者:姜楠 ; 秘义行 ; 吕东 ; 王璐 ; 慕洋洋
  • 英文作者:JIANG Nan;Bi Yixing;L Dong;WANG Lu;MU Yangyang;Tianjin Fire Research Institute of MPS;
  • 关键词:催化重整工艺 ; 氢气 ; 爆炸 ; 超压
  • 英文关键词:catalytic reforming process;;hydrogen;;explosion;;overpressure
  • 中文刊名:BZCJ
  • 英文刊名:Explosion and Shock Waves
  • 机构:公安部天津消防研究所;
  • 出版日期:2018-06-01 10:27
  • 出版单位:爆炸与冲击
  • 年:2019
  • 期:v.39;No.184
  • 基金:“十三五”国家重点研发计划课题(2017YFC0806602)
  • 语种:中文;
  • 页:BZCJ201902020
  • 页数:9
  • CN:02
  • ISSN:51-1148/O3
  • 分类号:179-187
摘要
基于计算流体力学分析软件(FLACS),以催化重整反应单元为例建立事故模型,研究不同形状障碍物、泄漏位置,对不同泄漏时间和泄漏监测点的氢气爆炸超压的影响情况。通过研究,建立了与气体燃烧热与爆炸监测点距气团中心距离相关的最大爆炸超压模型。研究结果表明,在研究设计的遮挡物条件下,气体爆炸最大超压与折合距离在对数坐标系中均呈近似线性关系;对于不同的遮挡物,爆炸超压模型需进行修正;在反应器中部发生的事故场景,泄漏5min后最大爆炸超压明显增大。
        Because the structure and shape of processing equipment in petrochemical industry are complex normally,the explosion overpressure of gas is hard to be predicted by traditional explosion overpressure models.Base on the computational fluid dynamics software (FLACS) and the accident model of the catalytic reforming process,the effects of different factors (obstacle shape,leakage position) on the explosion overpressure of hydrogen at different times and different monitoring points were investigated.The explosion overpressure models for overpressure,combustion heat of hydrogen and distance from the center of gas cloud were established.The results show that,the overpressure approximately follows a linear relationship with scaled distance in a logarithmic coordinate system;the explosion overpressure model should be modified for different kinds of obstacles;when the leakage time achieves 5 minutes,the accident occurring in the middle of the reactor shows increasing overpressure obviously.
引文
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