粗苯储罐泄露蒸气云爆炸事故后果模拟分析

Simulation Analysis of the Result of Vapor Cloud Explosion Accident of Leaking in Crude Benzene Storage Tank

石油化工企业易燃易爆气体储罐出现泄露情况后,罐内气体扩散并与空气混合形成爆炸性混合物,在延迟点火情况下产生蒸气云爆炸,其冲击波对企业人员及设施危害较大。为分析蒸气云爆炸事故后果,确定冲击波超压影响程度,以安徽省某生产企业粗苯储罐为例,应用TNO多能法,模拟储罐泄露导致的蒸气云爆炸事故,计算爆炸产生的超压,确定其对该企业中央控制室产生的影响。经与该生产企业共同认定,确定该流程形式简单,计算过程清晰,计算结果可信,对企业中央控制室等生产设施改造有参考价值,可以用于工程实践,并作为固定计算流程在行业内推广。

After the inflammable and explosive gas storage tank in petrochemical enterprises is leaked,the gas in the tank diffused and mixed with air to form an explosive mixture.In the case of delayed ignition,the vapor cloud explodes,and the shock wave will do great harm to the personnel and facilities of the enterprises.In order to analyze the consequences of the vapor cloud explosion accident and determine the influence degree of shock wave overpressure,taking the crude benzene storage tank of a manufacturing enterprise in Anhui province as an example,the TNO multi-energy method was applied to simulate the va⁃por cloud explosion accident caused by tank leakage and calculate the overpressure generated by the explo⁃sion to determine the impact on the central control room of the enterprise.After joint identification with the production enterprise,it is determined that the process is simple in form,the calculation process is clear,and the calculation results are credible.It has reference value for the transformation of production facilities such as the central control room of the enterprise,which can be used in engineering practice and promoted in the industry as a fixed calculation process.