使用空中喷气式驱动的NaHCO3粉末和多孔屏障抑制甲空气爆炸
Zhenglong Qiao1, Qianfei Miao1, Heng Ma2
1College of Resource and Environment Engineering, Jilin Institute of Chemical Technology, Jilin, Jilin 132022, China.
ACS omega
|January 20, 2025
概括
碳酸 (NaHCO3) 粉末通过降低火焰速度和过压来有效抑制甲空气爆炸. 多孔屏障通过增加粒子-火焰接触时间来增强这种效果.
科学领域:
- 燃烧科学 燃烧科学
- 化学工程是化学工程的重要组成部分.
- 爆炸安全 爆炸安全
背景情况:
- 在各种工业环境中,甲空气爆炸带来了重大风险.
- 有效的抑制策略对于减轻爆炸危险至关重要.
- 碳酸 (NaHCO3) 是一种潜在的爆炸抑制剂.
研究的目的:
- 为了研究空气喷气驱动的NaHCO3粉末和多孔屏障在抑制甲空气爆炸中的有效性.
- 阐明NaHCO3粉末抑制作用的物理和化学机制.
- 评估多孔屏障对阻燃性能的影响.
主要方法:
- 使用高速摄像机和压力传感器进行实验调查,以记录火焰传播和过压.
- 通过甲燃烧反应路径对NaHCO3粉末抑制机制的分析.
- 对流和粒子-火焰相互作用的多孔屏障效应的评估.
主要成果:
- 空气喷气驱动的NaHCO3粉末显著降低了火焰传播速度和过压升高率.
- 多孔屏障通过增加颗粒的旅行时间和与火焰的接触来提高NaHCO3的有效性.
- 抑制作用随着孔隙屏障阻塞率的上升而增加.
结论:
- NaHCO3粉末通过物理和化学途径有效抑制甲空气爆炸.
- 化学抑制涉及基与二氧化碳的优先反应,减少关键链传播基 (H *,OH *).
- 孔隙屏障通过优化颗粒分散和火焰区域内停留时间来提高NaHCO3的性能.
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