Investigation on the synergistic suppression effect of flame retardant-modified dry water on methane explosion

IF 4.5 2区工程技术 Q2 ENGINEERING, CHEMICAL

Powder Technology Pub Date : 2025-01-31 DOI:10.1016/j.powtec.2025.120728

Jie Gao, Chuyuan Huang, Hao Zeng, Zuyang Du, Xianfeng Chen, Dongyang Qiu

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引用次数: 0

Abstract

To reduce the occurrence of methane (CH₄) explosion accidents, this study successfully prepared a novel composite powder (CGDW) by adding magnesium hydroxide and zinc borate to the core solution of dry water (DW). Its physical properties, such as flowability, mechanical stability, particle size distribution, water retention, and bulk density were characterized separately. The effect of CGDW on the explosion characteristics of stoichiometric CH₄ was explored in a square explosion pipeline. The results showed that the physical properties of CGDW were significantly improved compared to DW. CGDW demonstrated excellent CH₄ explosion suppression performance due to its unique core-shell structure, which could simultaneously exert a solid-liquid two-phase suppression effect. After adding 15 g CGDW, the maximum explosion pressure decreased by 69.4 %, the peak temperature decreased by 97.8 %, and the explosion flame was isolated during propagation. In addition, the explosion suppression mechanism of CGDW on the CH₄ was explored in terms of physical effects (heat insulation, gas dilution, cooling) and chemical effects (interrupting the chain reaction). CGDW possesses green and high-efficiency characteristics, providing a new path to suppress CH₄ explosion and improve the safety of its usage.

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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.