Explosion mechanism of HMX dust within a tank and its comparative analysis of explosion characteristics with IPN mist

IF 4.5 2区工程技术 Q2 ENGINEERING, CHEMICAL

Powder Technology Pub Date : 2024-09-28 DOI:10.1016/j.powtec.2024.120325

Yixiao Zhang, Huimin Liang, Qi Zhang, Zhuorong An, Rui Liu

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Abstract

This study establishes a numerical model for dust flow and dust cloud explosion, elucidating the mechanisms underlying HMX dust cloud explosions and the variations in explosion parameters concerning concentration and particle size. Furthermore, it compares HMX dust's explosion parameters with IPN mist's. The findings can be a pivotal basis for the design of explosive compositions and accident prevention. As the concentration increases, both the maximum explosion pressure (P_max) and the maximum rate of pressure rise ((dP/dt)_max) of HMX dust undergo significant increases. As the particle size increases, P_max and (dP/dt)_max for HMX dust exhibit no significant variations. When the concentrations of HMX dust and IPN mist are 400 g/m³, there are no significant differences in their P_max and (dP/dt)_max. However, when the concentrations of HMX dust and IPN mist are 100 g/m³, the hazards of IPN mist are higher than those of HMX dust.

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罐内 HMX 粉尘的爆炸机理及其与 IPN 雾爆炸特性的比较分析

本研究建立了粉尘流和粉尘云爆炸的数值模型，阐明了 HMX 粉尘云爆炸的机理以及浓度和粒度等爆炸参数的变化。此外，它还比较了 HMX 粉尘和 IPN 雾的爆炸参数。研究结果可作为爆炸成分设计和事故预防的重要依据。随着浓度的增加，HMX 粉尘的最大爆炸压力（Pmax）和最大压力上升率（(dP/dt)max）都显著增加。随着粒径的增大，HMX 粉尘的最大爆炸压力（Pmax）和最大压力上升率（dP/dt）没有明显变化。当 HMX 粉尘和 IPN 雾的浓度为 400 克/立方米时，它们的 Pmax 和 (dP/dt)max 没有明显差异。不过，当 HMX 粉尘和 IPN 雾的浓度为 100 克/立方米时，IPN 雾的危害高于 HMX 粉尘。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Powder Technology 工程技术-工程：化工

CiteScore

9.90

自引率

15.40%

发文量

1047

审稿时长

46 days

期刊介绍： Powder Technology is an International Journal on the Science and Technology of Wet and Dry Particulate Systems. Powder Technology publishes papers on all aspects of the formation of particles and their characterisation and on the study of systems containing particulate solids. No limitation is imposed on the size of the particles, which may range from nanometre scale, as in pigments or aerosols, to that of mined or quarried materials. The following list of topics is not intended to be comprehensive, but rather to indicate typical subjects which fall within the scope of the journal's interests: Formation and synthesis of particles by precipitation and other methods. Modification of particles by agglomeration, coating, comminution and attrition. Characterisation of the size, shape, surface area, pore structure and strength of particles and agglomerates (including the origins and effects of inter particle forces). Packing, failure, flow and permeability of assemblies of particles. Particle-particle interactions and suspension rheology. Handling and processing operations such as slurry flow, fluidization, pneumatic conveying. Interactions between particles and their environment, including delivery of particulate products to the body. Applications of particle technology in production of pharmaceuticals, chemicals, foods, pigments, structural, and functional materials and in environmental and energy related matters. For materials-oriented contributions we are looking for articles revealing the effect of particle/powder characteristics (size, morphology and composition, in that order) on material performance or functionality and, ideally, comparison to any industrial standard.