CAJ | 학술논문

利用Microstation软件对某化工厂区进行三维建模,在考虑实际外界风向、风速,不同点火源位置等重要影响因素的条件下,运用计算流体动力学(CFD)软件FLACS,研究了有毒、易燃易爆的氯乙烯液化气体储罐安全阀气体泄漏和储罐底部物料管线液态氯乙烯的泄漏、蒸发、扩散和爆炸作用等过程,计算结果可以给出氯乙烯火灾、爆炸或扩散中毒等事故后果的影响范围和相关精确物理量.模拟结果表明,对于常温下的氯乙烯液化气体球罐,球罐安全阀泄漏后罐区及周边不会有燃烧或爆炸危险;而物料管线在特定的液相泄漏情景下,蒸发扩散的氯乙烯气云则有可能发生气云爆炸;但在弱约束条件下,爆炸冲击波作用比较微弱.该研究方法及其结果可以为石油化工企业选址、设计布局、安全规划、风险分析、应急救援及事故调查等提供更加准确的依据.
이용Microstation연건대모화공엄구진행삼유건모,재고필실제외계풍향、풍속,불동점화원위치등중요영향인소적조건하,운용계산류체동역학(CFD)연건FLACS,연구료유독、역연역폭적록을희액화기체저관안전벌기체설루화저관저부물료관선액태록을희적설루、증발、확산화폭작작용등과정,계산결과가이급출록을희화재、폭작혹확산중독등사고후과적영향범위화상관정학물리량.모의결과표명,대우상온하적록을희액화기체구관,구관안전벌설루후관구급주변불회유연소혹폭작위험;이물료관선재특정적액상설루정경하,증발확산적록을희기운칙유가능발생기운폭작;단재약약속조건하,폭작충격파작용비교미약.해연구방법급기결과가이위석유화공기업선지、설계포국、안전규화、풍험분석、응급구원급사고조사등제공경가준학적의거.
A 3-dimentional modeling for a certain chemical factory was conducted by using Microstation software. With consideration on the important influence factors such as outside wind direction, wind speed, and different positions of ignition source, the gaseous leakage process of the poisonous, flammable and explosive vinyl chloride from the relief valve of storage tank, and the leakage, evaporation, diffusion and explosion process of the liquid vinyl chloride from the pipeline of the storage tank bottom were simulated with the software FLACS of Computational Fluid Dynamics (CFD). The simulation results show that, for the spherical tank of liquefied gases vinyl chloride at room temperature, the leakage of vinyl chloride from the relief valve of storage tank will not cause fire and explosion;but for a given liquid leakage of vinyl chloride from the pipeline, the gas cloud caused by evaporation and diffusion of vinyl chloride may cause an explosion. If there is a weak constraint condition, the explosion shock wave will be rather feeble. This study can provide precise foundation for the risk analysis, safety plan, emergency recovery and accident investigation of chemical enterprises.