Research on the influence of phosphorus regulation on the explosion suppression performance and mechanism of NiB/Hβ-Al2O3 suppressant

IF 4.5 2区工程技术 Q2 ENGINEERING, CHEMICAL

Powder Technology Pub Date : 2025-02-03 DOI:10.1016/j.powtec.2025.120742

Jin Han , Wenxi Shi , Fei Wang , Jinshe Chen , Shengjing Dongye , Haiyan Chen , Yang Zhang , Yuzhen Zhu

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引用次数: 0

Abstract

This paper introduces a novel approach to addressing the coal dust explosion. A phosphorus-regulated NiB/Hβ-Al₂O₃ suppressant was prepared through in-situ synthesis. The flame propagation behavior and the suppression performance were tested. The results demonstrate that after phosphorus regulating, the inhibition performance is notably enhanced. By increasing the addition, a significant decrease in flame brightness and propagation distance was observed. Concurrently, a notable decline in both the maximum pressure and its rate of increase was observed. Based on the experimental results, the mechanism for the explosion suppression of phosphorus-regulated NiB/Hβ-Al₂O₃ is proposed. Hβ can adsorb free radicals and interrupt chain reactions. Meanwhile, Al₂O₃ adsorbs on the surface of coal dust, preventing heat transfer. The NiBP decomposes, absorbing heat and the generated free radicals Ni· and B·, thereby interrupting the explosion chain reaction. Notably, the P· not only effectively adsorbs free radicals but also has efficient synergistic effects with Ni· and B·.

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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.