柴油罐池火灾事故模拟与影响因素分析

Simulation of diesel tank fire accident and analysis on its influencing factors

为探究柴油罐池火灾事故后果危害区域的影响因素,采用ALOHA软件对柴油罐池火灾事故进行模拟,分析泄漏孔径、泄漏位置、温度、湿度和风速与事故后果之间的关系。分析结果表明:泄漏孔径增大和储存温度增高时,火灾危害范围、火焰高度和最大燃烧速度都会增大;随泄漏孔高度增加,火焰危害范围和最大燃烧速度会先下降后趋于平缓,而火焰高度变化不大;空气湿度增加时,火灾影响范围缓慢下降并趋于平缓;当风速增大时,影响区域先平缓再突升,到达高点后缓慢下降,存在一个最大危害风速范围;空气湿度和风速对火焰高度和最大燃烧速度没有影响。

In order to study the influence factors of the consequence of pool fire in diesel tank leakage incident,the ALOHA software was used to simulate the pool fire accident.The connection between accidentalconsequence of pool fire accident of diesel storage and influence factors such as leakage aperture,leakage position,storage temperature,air humidity,wind speed and so on,was analyzed.The results showed that with the increase of the leakage aperture or storage temperature,the radius of hazardous area,the flame height and the maximum combustion rate increase.With the increasing height of leakage location,the radius of hazardous areaand the maximum combustion rate decrease firstly and then tend to be gentle,but the flame height changes little.With the increase of air humidity,the radius of hazardous area decrease slowly.When the wind speed increases,the radius of hazardous area increases slowly at first,then jumps to peak and decreases slowly again,so there is a worst wind speed range.The air humidity and wind speed have no effect on flame height and the maximum combustion rate.