中国安全生产科学研究院;
研究粉体抑爆剂抑制聚乙烯粉尘爆炸火焰传播特性对工业粉尘爆炸防治具有重要意义。基于此,利用自主搭建的爆炸火焰抑制管道实验系统开展了质量浓度1 000 g/m3聚乙烯粉及其与不同占比ABC粉、MPP粉和MCA粉的混合爆炸研究,并利用同步热分析对粉体抑爆剂影响聚乙烯粉的热解过程进行了探究。结果表明:三种抑爆剂的抑制效果中ABC粉最佳,当ABC粉占比为10%,MCA和MPP的占比为15%时火焰可以传播,继续添加抑爆剂粉则不会发生爆炸。当混合体系中分别加入20%的ABC、MCA和MPP时,聚乙烯粉的初始分解温度由约286℃分别降低至约267、271、270℃,说明粉体抑爆剂会与聚乙烯竞争体系热量用于自身分解,从而通过物理化学作用对爆炸起到抑制效果。研究结果对粉尘爆炸火焰传播研究和聚乙烯粉尘爆炸灾害的防控具有一定的指导作用。
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下载次数 | 被引频次 | 阅读次数 |
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基本信息:
DOI:10.16791/j.cnki.sjg.2024.08.007
中图分类号:X932
引用信息:
[1]苏明清,多英全,陈思凝等.竖直管道内三种粉体抑爆剂对聚乙烯燃爆火焰传播的影响[J].实验技术与管理,2024,41(08):53-59.DOI:10.16791/j.cnki.sjg.2024.08.007.
基金信息:
国家重点研发计划项目(2023YFC3008803)