安全柴油燃爆性能的静爆试验研究

Static Experiment for Combustion and Explosion Performances of Safety Diesel Fuel

为掌握安全柴油的燃爆性能,以便进一步完善制备工艺,提高其安全性能,开展了炸药起爆、引燃普通柴油（1#柴油）以及不同含水量（质量分数）的安全柴油（2#、3#柴油）的静爆试验,并采用高速照相机、红外热成像仪分别记录了试验过程和火球的表面温度。试验结果表明：1#、2#、3#柴油云雾被引燃形成火球所需的初始点火能量逐渐增大,而2#、3#柴油火球的尺寸和表面平均温度则小于1#柴油;1#柴油的池火持续时间达到125 s,而2#、3#的池液只是出现闪燃现象,未形成池火,表现出了较强的自熄灭能力。因此,安全柴油具有较好的阻燃抑爆能力,而将它的含水量控制在合适的水平是提高其安全性能的重要方法。

In order to clarifycombustion and explosion performance of safety diesel fuel and to modifypreparation processes to improve itssafety performance, a series of experiments igniting the ordinary diesel fuel cloud （ 1# ） and safety diesel fuel with different water content （2# and 3 #） by explosivewere conducted. The process of experiments and temperature parameters of fireballs were recorded separately by high-speed camera and the infrared thermal imager. The experimental results show that the initial ignition energy of 1#, 2#, 3#cloud increase gradually under the experimental conditions, but the size and average surface temperature of fireball of 1# are larger than those of 2# and 3# ; the pool fire duration of 1# is 125s while 2# and 3# just exhibitflash burn phenomenon and can＇t form a pool fire, which shows that the emulsified diesel fuels have a stronger self-extinguishing ability. Therefore, it is proved that safety diesel fuels have better flame retardant and explosion suppression performances, and an important method to improve safety performance is to control the water content at the right level of safety diesel fuel.