基于FDS模拟的超大丙烷储罐罐内池火火灾事故后果研究

Study on the Consequences of Fire Accident in Super-large Propane Storage Tank Based on FDS Simulation

以天津某化工厂丙烷储罐为例,设定了丙烷储罐罐内池火灾的火灾场景,建立丙烷储罐泄漏模型.得出了的丙烷储罐池火灾的烟气和热辐射变化规律,火灾初期热辐射能量骤然增加,在约30 s内最大热辐射强度约为972 k W/m2,在达到最强辐射热后迅速降低,约在40 s时,辐射热量区域稳定,并在至600 s时,辐射热的大小将接近277 k W/m2.火灾烟气初期较小,呈圆饼状,随着火势的增大,火焰也明显增大,随之燃烧进入稳定阶段,其形状和大小呈稳定状态.

Taking a propane tank in a chemical plant in Tianjin as an example, the fire scene of the tank fire in propane storage tank is set up. Smoke and heat radiation then the changing rule of the propane tank of pool fire, a sudden increase in the early fire thermal radiation energy, at about 30 s in the maximum heat radiation intensity is about 972 k W/m2, rapidly decreased in the strongest radiation, at about40 s, the heat radiation of regional stability, and to 600 s, the size of the thermal radiation will be close to277 k W/m2. In the early stage of the fire, the smoke was small and round cake shape. With the increase of the fire, the flame also increased significantly, and then the combustion entered a stable stage.