Effect of particle size distribution on explosion intensity of aluminum powder. Issue 1 (10th October 2022)

• Record Type: Journal Article
• Authors: Zhang, Jiangshi; Ren, Xiaofeng; Jia, Hongfu; Cui, Ziling; Xiong, Nuoying; Xiao, Bo; Han, Xu
• Is Part Of: Process safety progress. Volume 42:Issue 1(2023)
• Page Start: 186
• Page End: 193
• Publication Date: 2022-10-10
• Subjects: aluminum powder -- explosion intensity -- explosion prevention -- explosion risk -- particle size distribution; Chemical plants -- Management -- Periodicals; 660
• DOI: 10.1002/prs.12422
• Languages: English
• ISSNs: 1066-8527

Abstract

Abstract: In order to effectively prevent the occurrence of aluminum powder explosion accidents, the statistical analysis method was used to analyze the differences between all the groups and between any two groups in relation to the explosion intensity parameters ( P ex, [dP/dt] ex, K st, t 1 and t 2 ) of aluminum powder samples. The results show that small particle size aluminum powder components play a major role in the explosion reaction rate, while large particle size aluminum powder components have relatively little effect. Among the nine factors D 10 – D 90, the top three particle size parameters with the most relevance to P ex are D 10 (0.708*), D 3, 2 (0.686*), and D 30 (0.646*) in turn. The top three particle size parameters with the most relevance to t 1 are D 10 (0.903**), D 20 (0.898**), and D 30 (0.873**) in turn. The top three particle size parameters with the greatest relevance for (dP/dt) ex and K st are SSA (0.963**), D 30 (−0.748*), and PSS (−0.744*). The top three particle size parameters with the greatest relevance for t 2 are D 30 (0.962**), D 20 (0.960**), and D 4, 3 (0.936**). Therefore, D 10, D 20, D 30, D 3, 2, D 4, 3, PSS and SSA have important effects on the explosion parameters, and they are important reference indicators for assessing explosion risk.