Explosion Characteristics of Layered Wood Dust With High Pressure Oxygen

作者：Ze He, Haitao Yang, Zijun Chen, Honghao Ma, Xiliang Zhang, Luqing Wang, Zhaowu Shen · 发表于：Energy Science & Engineering · 年份：2025 · DOI：10.1002/ese3.70219 · 被引用次数：6 · 研究领域：Combustion and Detonation Processes、Risk and Safety Analysis、Energetic Materials and Combustion

ABSTRACT Dust explosions have been extensively investigated for process safety. This study introduces an explosion mode involving layered wood dust and high‐pressure oxygen. Unlike atmospheric air conditions, layered wood dust can be triggered by weak ignition energy (60 J) in high‐pressure oxygen environments. The explosive pressure characteristics under the stoichiometric mass ratio in both closed and vented chambers were recorded and analyzed. The results show that the maximum explosion pressure, pressure ratio, and maximum pressure rise rate increase with higher initial pressure and ignition energy. Under initial absolute pressures of 1.5–2.5 MPa, the maximum explosion pressure increased linearly with the initial pressure but exceeded this linear relationship at 3 MPa. Within the initial pressure range of 1.5–3.0 MPa, the maximum rate of pressure rise increased in a power order. The pressure–time curve shows sharp pressure oscillations in the pressure rise and stabilization sections. The amplitude of these oscillations increases with the initial pressure. Pressure‐vented experiments show that venting effectively reduces the maximum pressure in the tube during the dust explosion. It is worth noting that the maximum reduced pressure is higher than the static activation overpressure. The reduced explosion pressure intensifies at higher initial pressures at the same static activation overpressure.