Explosion hazards of mixed aluminum/aluminum hydride dust cloud in a closed vessel

Hangwei Wan; Yuquan Wen; Sheng Niu; Yongsheng Jia; Qi Zhang

doi:10.1016/j.powtec.2023.118374

Explosion hazards of mixed aluminum/aluminum hydride dust cloud in a closed vessel

Hangwei Wan, Yuquan Wen, Sheng Niu, Yongsheng Jia^*, Qi Zhang

^*Corresponding author for this work

School of Mechatronical Engineering

Research output: Contribution to journal › Article › peer-review

12 Citations (Scopus)

Abstract

Aluminum (Al) and aluminum hydride (AlH₃) powders are important energetic materials but show an explosion risk when suspended in air. The explosion hazard of mixed dust forms the basis of safety design in industrial processes. In this work, the explosion characteristics and mechanism of Al/air, AlH₃/air, and Al/AlH₃/air were investigated by experiments and simulations. The results show that the induction time of Al dust explosion is longer than that of AlH₃, but the explosion severity of Al dust is smaller than that of AlH₃. For the three-component Al/AlH₃/air system, the addition of AlH₃ dust can shorten the explosion induction time of the mixed system. The maximum explosion pressure (P_max) of the dust mixture first increases and then decreases with mixed concentrations. At a mixed concentration of 900 g/m³ and an AlH₃ content of 80%, the P_max of the mixed dust is reached.

Original language	English
Article number	118374
Journal	Powder Technology
Volume	420
DOIs	https://doi.org/10.1016/j.powtec.2023.118374
Publication status	Published - 15 Apr 2023

Keywords

Aluminum hydride
Dust explosion
Explosion severity
Flame propagation
Numerical simulation

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10.1016/j.powtec.2023.118374

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title = "Explosion hazards of mixed aluminum/aluminum hydride dust cloud in a closed vessel",

abstract = "Aluminum (Al) and aluminum hydride (AlH3) powders are important energetic materials but show an explosion risk when suspended in air. The explosion hazard of mixed dust forms the basis of safety design in industrial processes. In this work, the explosion characteristics and mechanism of Al/air, AlH3/air, and Al/AlH3/air were investigated by experiments and simulations. The results show that the induction time of Al dust explosion is longer than that of AlH3, but the explosion severity of Al dust is smaller than that of AlH3. For the three-component Al/AlH3/air system, the addition of AlH3 dust can shorten the explosion induction time of the mixed system. The maximum explosion pressure (Pmax) of the dust mixture first increases and then decreases with mixed concentrations. At a mixed concentration of 900 g/m3 and an AlH3 content of 80%, the Pmax of the mixed dust is reached.",

keywords = "Aluminum hydride, Dust explosion, Explosion severity, Flame propagation, Numerical simulation",

author = "Hangwei Wan and Yuquan Wen and Sheng Niu and Yongsheng Jia and Qi Zhang",

note = "Publisher Copyright: {\textcopyright} 2023 Elsevier B.V.",

year = "2023",

month = apr,

day = "15",

doi = "10.1016/j.powtec.2023.118374",

language = "English",

volume = "420",

journal = "Powder Technology",

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T1 - Explosion hazards of mixed aluminum/aluminum hydride dust cloud in a closed vessel

AU - Wan, Hangwei

AU - Wen, Yuquan

AU - Niu, Sheng

AU - Jia, Yongsheng

AU - Zhang, Qi

PY - 2023/4/15

Y1 - 2023/4/15

N2 - Aluminum (Al) and aluminum hydride (AlH3) powders are important energetic materials but show an explosion risk when suspended in air. The explosion hazard of mixed dust forms the basis of safety design in industrial processes. In this work, the explosion characteristics and mechanism of Al/air, AlH3/air, and Al/AlH3/air were investigated by experiments and simulations. The results show that the induction time of Al dust explosion is longer than that of AlH3, but the explosion severity of Al dust is smaller than that of AlH3. For the three-component Al/AlH3/air system, the addition of AlH3 dust can shorten the explosion induction time of the mixed system. The maximum explosion pressure (Pmax) of the dust mixture first increases and then decreases with mixed concentrations. At a mixed concentration of 900 g/m3 and an AlH3 content of 80%, the Pmax of the mixed dust is reached.

AB - Aluminum (Al) and aluminum hydride (AlH3) powders are important energetic materials but show an explosion risk when suspended in air. The explosion hazard of mixed dust forms the basis of safety design in industrial processes. In this work, the explosion characteristics and mechanism of Al/air, AlH3/air, and Al/AlH3/air were investigated by experiments and simulations. The results show that the induction time of Al dust explosion is longer than that of AlH3, but the explosion severity of Al dust is smaller than that of AlH3. For the three-component Al/AlH3/air system, the addition of AlH3 dust can shorten the explosion induction time of the mixed system. The maximum explosion pressure (Pmax) of the dust mixture first increases and then decreases with mixed concentrations. At a mixed concentration of 900 g/m3 and an AlH3 content of 80%, the Pmax of the mixed dust is reached.

KW - Aluminum hydride

KW - Dust explosion

KW - Explosion severity

KW - Flame propagation

KW - Numerical simulation

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DO - 10.1016/j.powtec.2023.118374

M3 - Article

AN - SCOPUS:85149184985

SN - 0032-5910

VL - 420

JO - Powder Technology

JF - Powder Technology

M1 - 118374

ER -

Explosion hazards of mixed aluminum/aluminum hydride dust cloud in a closed vessel

Abstract

Keywords

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