石油化工设计 ›› 2025, Vol. 42 ›› Issue (3): 1-5.

• 设计技术 •    下一篇

液化烃球罐组火灾工况安全泄放动态模拟

张建华 吕静 耿强   

  1. 中国石化工程建设有限公司,北京,100101
  • 收稿日期:2025-04-01 出版日期:2025-08-25 发布日期:2025-08-25
  • 作者简介:张建华,男,吉林长岭人。1996年毕业于北京理工大学,获工学硕士学位,正高级工程师。现在中国石化工程建设有限公司从事工艺设计工作,已发表论文12篇。联系电话010-84876855。

Dynamic Simulation of Safety Relief of Liquefied Hydrocarbon Spherical Tank Groups Under Fire Scenarios

Zhang Jianhua, Lyu Jing, Geng Qiang   

  1. Sinopec Engineering Incorporation, Beijing, 100101
  • Received:2025-04-01 Online:2025-08-25 Published:2025-08-25

摘要: 发生外部火灾时,盛装混合组份液化烃球罐的安全泄放量不仅取决于吸收的热量,也取决于排放时间。用静态方法计算安全泄放量,结果偏于保守。针对计算液化烃球罐组外部火灾工况安全泄放的问题,构建了液化烃球罐组动态泄放模型,通过DYNSIM动态模拟软件模拟外部火灾对不同容积、不同组成的液化烃球罐及球罐组泄放的影响。结果表明,在泄放时,泄放量、泄放温度、泄放介质分子量均随泄放时间的变化而变化。相对静态计算方法,动态模拟的计算结果考虑了时间因素,更符合实际排放情况。采用动态模拟方法计算球罐组火灾泄放参数,能够合理优化泄放管网,对安全阀以及火炬系统的设计,有很好的指导作用。

关键词: 液化烃, 球罐, 火灾, 安全泄放, 动态模拟

Abstract:

The relief rate of liquefied hydrocarbon spherical tanks for mixed components under external fire scenarios depends not only on the heat absorbed, but also on the relief time. Using static calculation methods to calculate the relief rate, the results tend to be conservative. In this research, a dynamic safety relief model of liquefied hydrocarbon spherical tank groups was constructed to calculate the safety relief load of liquefied hydrocarbon spherical tank groups under external fire scenarios. DYNSIM, a dynamic simulation software, was used to simulate the impact of external fire on the relief of liquefied hydrocarbon spherical tanks and tank groups with different compositions and volumes. The simulation results show that during the relief, the relief rate, relief temperature and molecular weight of relief medium vary with the relief time. Compared to static calculation methods, dynamic simulation considers the time factor, and the calculation results are more aligned with the actual relief conditions. Using dynamic simulation methods to calculate the relief parameters of spherical tank groups can reasonably optimize the relief network, providing guidance for the design of safety valves and flare systems.

Key words: liquefied hydrocarbon, spherical tank, fire, safety relief, dynamic simulation