Structure Optimization and Flame Barrier Performance Evaluation of Barrier Explosion‐Proof Materials Based on FLACS

Abstract

AbstractBlocking explosion‐proof materials can quickly transfer heat, block flame propagation, and prevent explosion accidents. It has gradually become a rudimentary solution to the intrinsic safety of explosion or “secondary explosion” during the storage and transportation of flammable and explosive liquid or gaseous dangerous chemicals. The impact of the addition of explosion‐proof porous materials in the storage tank on the shock wave was numerically simulated by FLACS and further analyzed with changes in pressure, temperature, and velocity. The effects of the configuration, size, aperture, layer spacing, and filling rate of the barrier explosion‐proof ball on the barrier explosion‐proof effect were investigated whereby the optimal barrier explosion‐proof appearance structure was obtained. The explosion resistance tester was used to examine and evaluate the fire resistance performance of the material, and the influence of different types of barrier explosion‐proof pellets on the fire resistance performance was revealed. The explosion suppression performance of the barrier explosion‐proof material was evaluated by FLACS numerical simulation. The temperature and pressure in the storage tank can be greatly scaled down by adding the explosion‐proof porous material. The numerical simulation results are coherent with that from experimental part, and the general rule of blocking explosion protection can be therefore identified: the turbulence effect is particularly obvious in the area filled with explosion‐proof materials, and the porous spheres would continually reflect and weaken the shock wave. This makes it possible to significantly bring down the pressure and temperature after filling the explosion‐proof area, thereby preventing explosions.