Abstract: In order to study the influence of polymer anti-fogging agent of explosion suppression diesel fuel on the characteristics of pool fire combustion, pool fire experiments of No.-10 diesel fuel, fire resistant diesel fuel and explosion suppression diesel fuel were conducted. Firstly, the oil basin was placed on the electronic scale to determine the weight loss of the sample caused by combustion. Secondly, four thermocouples were arranged from bottom to top along the central line of the oil basin, respectively, 15, 30, 45 and 60 cm from the bottom of the oil basin to test the flame temperature. Then the flue gas analyzer was arranged at 80 cm above the bottom center of the oil basin, and the radiant heat flux meter was fixed 40 cm away from the center of the oil basin. Lastly, the volume fraction of CO and CO₂ in flue gas and radiant heat flux of three types of diesel fuels were measured. The results show that the effects of anti-fogging agent of explosion suppression diesel fuel on promoting combustion mainly occur in the initial combustion stage and the early stage of stable combustion, which will volatilize and produce a large amount of combustible vapor that requires a larger flame height and area to increase the contact reaction surface, that when the content of anti-fogging agent is less than 0.2%, the pool fire combustion characteristics of explosion suppression diesel fuel are similar to that of fire resistant diesel fuel, and that while the content of anti-fogging agent is more than 0.4%, its pool fire combustion will be intensified significantly, which is not conducive to its self-extinguishing.

Key words: explosion suppression diesel fuel, pool fire, combustion characteristic, anti-fogging agent, flame