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一种新型介孔复合抑爆剂的铝粉抑爆性能及机理

Aluminum Dust Explosion Suppression Performance and Mechanism of a New Mesoporous Composite Explosion Suppressant.

作者信息

Li Xinyu, Chen Haiyan, Zhang Yansong, Yuan Chunmiao, Wei Hongzhao, Sun Wenxue, Lu Zhangjie, Zhang Qingzhou

机构信息

College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, P. R. China.

Mine Disaster Prevention and Control-Ministry of State Key Laboratory Breeding Base, Shandong University of Science and Technology, Qingdao 266590, P. R. China.

出版信息

ACS Omega. 2024 Oct 28;9(45):44942-44955. doi: 10.1021/acsomega.4c03871. eCollection 2024 Nov 12.

DOI:10.1021/acsomega.4c03871
PMID:39554466
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11561643/
Abstract

In this paper, using a 20 L spherical explosive device and a Hartmann device, we carried out explosion suppression experiments on 19 and 30 μm aluminum powders (500 g/m) with different concentrations of the new explosive suppressants (MCM41@CS-APP) and CaCO and elaborated on the suppression mechanism of the explosion of MCM41@CS-APP on aluminum powder. The experimental results show that when the concentration of the explosion suppressor is 50 g/m, the maximum explosion pressure ( ) produced by the explosion of mixed dust is higher than that of the explosion of aluminum powder, and with the increase of the concentration of the deflagration suppressant, the of the mixed dust decreases. When the concentrations of MCM41@CS-APP and CaCO reached 400 g/m, the of the mixed dust (Al = 19 μm) was 0.133 and 0.364 MPa, which decreased by 81.3% and 48.9%, respectively. The of the mixed dust (Al = 30 μm) was not significant. Both detonation inhibitors inhibited the explosion of aluminum powder; the detonation duration of Al/MCM41@CS-APP is shorter; there are fewer aluminum particles in the product; and the initial oxidation temperature of aluminum powder is higher.

摘要

在本文中，我们使用一个20升的球形爆炸装置和一个哈特曼装置，对不同浓度的新型爆炸抑制剂（MCM41@CS-APP）和碳酸钙与19微米和30微米铝粉（500克/立方米）进行了抑爆实验，并阐述了MCM41@CS-APP对铝粉爆炸的抑制机理。实验结果表明，当抑爆剂浓度为50克/立方米时，混合粉尘爆炸产生的最大爆炸压力（ ）高于铝粉爆炸的最大爆炸压力，并且随着爆燃抑制剂浓度的增加，混合粉尘的最大爆炸压力降低。当MCM41@CS-APP和碳酸钙的浓度达到400克/立方米时，混合粉尘（铝粉粒径 = 19微米）的最大爆炸压力分别为0.133和0.364兆帕，分别降低了81.3%和48.9%。混合粉尘（铝粉粒径 = 30微米）的最大爆炸压力降低不明显。两种爆炸抑制剂均抑制了铝粉的爆炸；Al/MCM41@CS-APP的爆燃持续时间较短；产物中的铝颗粒较少；并且铝粉的初始氧化温度较高。

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