{"title":"Experimental study on inhibiting methane-coal dust explosion by APP-diatomite composite explosion suppressant in the pipe network","authors":"Jinzhang Jia, Xiuyuan Tian","doi":"10.1016/j.arabjc.2024.105977","DOIUrl":null,"url":null,"abstract":"<div><p>To prevent and control the methane/coal dust compound explosion disaster, the APP-diatomite composite powder inhibition of methane/coal dust compound explosion experiments were carried out in the self-constructed pipe network. The composite powder was characterized by scanning electron microscopy and X-ray photoelectron spectroscopy. The change rules of methane/coal dust composite explosion pressure and flame propagation velocity were analyzed using different compounding ratios of powders in several monitoring points. The results show that the composite powder exhibited irregular morphology and the APP powder is uniformly distributed on the diatomite porous mesh structure. When the APP loading on the surface of diatomite is 40 wt%, composite powder has the best effect on explosion suppression, with the peak maximum explosion overpressure and the peak maximum flame propagation velocity reduced by 71.5 % and 92.2 %, respectively. The explosion suppression mechanism is revealed through pyrolysis properties, explosion products, and chain reaction.</p></div>","PeriodicalId":249,"journal":{"name":"Arabian Journal of Chemistry","volume":"17 10","pages":"Article 105977"},"PeriodicalIF":5.3000,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1878535224003794/pdfft?md5=9870437fdb741f8f2351b09745852722&pid=1-s2.0-S1878535224003794-main.pdf","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Arabian Journal of Chemistry","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1878535224003794","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
To prevent and control the methane/coal dust compound explosion disaster, the APP-diatomite composite powder inhibition of methane/coal dust compound explosion experiments were carried out in the self-constructed pipe network. The composite powder was characterized by scanning electron microscopy and X-ray photoelectron spectroscopy. The change rules of methane/coal dust composite explosion pressure and flame propagation velocity were analyzed using different compounding ratios of powders in several monitoring points. The results show that the composite powder exhibited irregular morphology and the APP powder is uniformly distributed on the diatomite porous mesh structure. When the APP loading on the surface of diatomite is 40 wt%, composite powder has the best effect on explosion suppression, with the peak maximum explosion overpressure and the peak maximum flame propagation velocity reduced by 71.5 % and 92.2 %, respectively. The explosion suppression mechanism is revealed through pyrolysis properties, explosion products, and chain reaction.
为预防和控制甲烷/煤尘复合爆炸灾害,在自建管网中进行了APP-硅藻土复合粉末抑制甲烷/煤尘复合爆炸实验。通过扫描电镜和 X 射线光电子能谱对复合粉体进行了表征。在多个监测点采用不同的粉末复合比例分析了甲烷/煤尘复合爆炸压力和火焰传播速度的变化规律。结果表明,复合粉末呈现不规则形貌,APP粉末均匀分布在硅藻土多孔网状结构上。当硅藻土表面的APP负载量为40 wt%时,复合粉末的抑爆效果最好,最大爆炸超压峰值和最大火焰传播速度峰值分别降低了71.5%和92.2%。通过热解特性、爆炸产物和连锁反应揭示了抑爆机理。
期刊介绍:
The Arabian Journal of Chemistry is an English language, peer-reviewed scholarly publication in the area of chemistry. The Arabian Journal of Chemistry publishes original papers, reviews and short reports on, but not limited to: inorganic, physical, organic, analytical and biochemistry.
The Arabian Journal of Chemistry is issued by the Arab Union of Chemists and is published by King Saud University together with the Saudi Chemical Society in collaboration with Elsevier and is edited by an international group of eminent researchers.