Methane explosion suppression characteristics based on the NaHCO3/red-mud composite powders with core-shell structure
Methane explosion suppression characteristics based on the NaHCO3/red-mud composite powders with core-shell structure
复制标题
基于核壳结构NaHCO3/赤泥复合粉体的甲烷爆炸抑制特性
DOI：
10.1016/j.jhazmat.2017.04.031
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发表时间：
2017-08-05
影响因子：
13.6
通讯作者：
Yi, Hong-wei
中科院分区：
文献类型：
--
作者：
Wang, Yan;Cheng, Yi-shen;Yi, Hong-wei
采用溶剂-反溶剂法成功制备了抑制甲烷爆炸的NaHCO3/赤泥复合粉体。RM作为载体，NaHCO3作为负载抑制剂。NaHCO3/RM复合粉体具有特殊的核壳结构和优异的吸热性能。在20 L球形爆炸容器和5 L有机玻璃管道中测试了NaHCO3/RM复合材料对9.5% CH4爆炸的抑制性能。结果表明，NaHCO3/RM复合粉末的抑制性能明显优于纯RM或NaHCO3粉末。NaHCO3的负载量对NaHCO3/RM复合粉体的缓蚀性能有较大的影响。NaHCO3的最佳加载量为35%。抑制效果显著，爆炸最大压力下降44.9%，最大压力上升速率下降963%，压力峰值时间延迟366.7%。(C) 2017 Elsevier B.V.版权所有
The NaHCO3/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 NaHCO3 was used as a loaded inhibitor. The NaHCO3/RM composite powders showed a special core-shell structure and excellent endothermic performance. The suppression properties of NaHCO3/RM composite for 9.5% CH4 explosion were tested in a 20 L spherical explosion vessel and a 5 L Perspex duct. The results showed that the NaHCO3/RM composite powders displayed a much better suppression property than the pure RM or NaHCO3 powders. The loading amount of NaHCO3 has an intensive influence on the inhibition property of NaHCO3/RM composite powders. The best loaded content of NaHCO3 is 35%. It exhibited significant inhibitory effect that the explosion max-pressure declined 44.9%, the max-pressure rise rate declined 963% and the pressure peak time delayed 366.7%, respectively. (C) 2017 Elsevier B.V. All rights reserved.