基于核壳结构的 NaHCO/红泥复合粉体的甲烷爆炸抑制特性。
Methane explosion suppression characteristics based on the NaHCO/red-mud composite powders with core-shell structure.
机构信息
State Key Laboratory Cultivation Bases Gas Geology and Gas Control (Henan Polytechnic University), Jiaozuo, Henan 454000, PR China; The Collaboration Innovation Center of Coal Safety Production of Henan Province, Jiaozuo, Henan 454000, PR China.
State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, PR China.
出版信息
J Hazard Mater. 2017 Aug 5;335:84-91. doi: 10.1016/j.jhazmat.2017.04.031. Epub 2017 Apr 12.
The NaHCO/red-mud (RM) composite powders were successfully prepared by the solvent-anti-solvent method for methane explosion suppression. The RM was used as a carrier, and the NaHCO was used as a loaded inhibitor. The NaHCO/RM composite powders showed a special core-shell structure and excellent endothermic performance. The suppression properties of NaHCO/RM composite for 9.5% CH explosion were tested in a 20L spherical explosion vessel and a 5L Perspex duct. The results showed that the NaHCO/RM composite powders displayed a much better suppression property than the pure RM or NaHCO powders. The loading amount of NaHCO has an intensive influence on the inhibition property of NaHCO/RM composite powders. The best loaded content of NaHCO is 35%. It exhibited significant inhibitory effect that the explosion max-pressure declined 44.9%, the max-pressure rise rate declined 96.3% and the pressure peak time delayed 366.7%, respectively.
NaHCO/红泥（RM）复合粉末通过溶剂-抗溶剂法成功制备，用于甲烷爆炸抑制。RM 用作载体，NaHCO 用作负载抑制剂。NaHCO/RM 复合粉末呈现特殊的核壳结构和优异的吸热性能。在 20L 球形爆炸容器和 5L 有机玻璃管道中测试了 NaHCO/RM 复合粉末对 9.5%CH 爆炸的抑制性能。结果表明，NaHCO/RM 复合粉末比纯 RM 或 NaHCO 粉末具有更好的抑制性能。NaHCO 的负载量对 NaHCO/RM 复合粉末的抑制性能有强烈的影响。NaHCO 的最佳负载量为 35%。它表现出显著的抑制效果，爆炸最大压力下降了 44.9%，最大压力上升率下降了 96.3%，压力峰值时间延迟了 366.7%。
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