Experimental investigation on the inhibition of coal dust explosion by the composite inhibitor of carbamide and zeolite

Dai, Huaming; Liang, Guangqian; Yin, Hepeng; Zhao, Qi; Chen, Xianfeng; He, Song

doi:10.1016/j.fuel.2021.121981

Cited by 40 publications

(1 citation statement)

References 45 publications

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“…In previous research, the authors got the ignition characteristics of dust and flame characteristics and also discussed the propagation process of toxic gas products in the explosion flow field. − However, the research on the suppression is still insufficient. Previous scholars’ research mainly focused on the explosion suppression of lignite dust. − Therefore, this paper selected long flame coal as the research object to analyze the suppression effect of different explosion suppressants on its explosion pressure. Long flame coal has a higher degree of metamorphism than lignite and is also the least metamorphosed bituminous coal.…”

Section: Introductionmentioning

confidence: 99%

Research on Explosion Pressure Characteristics of Long Flame Coal Dust and the Inhibition Effect of Different Explosion Suppressants

Liu,

Gao,

et al. 2023

ACS Omega

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To discuss the inhibition of long flame coal dust explosion pressure, NaHCO3, KHCO3, and NH4H2PO4 are selected as explosion suppression dust for explosion pressure tests under different conditions. The results show that when 25–38 and 38–45 μm coal dust are mixed in 1:1 ratio, the maximum explosion pressure is the largest, the maximum pressure is 0.79 MPa, and the maximum pressure rise rate is 74.89 MPa·s–1. The suppression dusts have good inhibition effect on explosion, the order of inhibition is NaHCO3, KHCO3, and NH4H2PO4 from the smallest to the largest. With the reduction of particle size of NH4H2PO4, its inhibition effect on explosion pressure is increasing, because more NH4H2PO4 particles move around coal dust particles, blocking the heat transfer and kinetic energy exchange. The above three suppression dust and their suppression methods can provide important data for dust prevention and control and have certain reference significance for carrying out explosion suppression work.

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Section: Introductionmentioning

confidence: 99%

Research on Explosion Pressure Characteristics of Long Flame Coal Dust and the Inhibition Effect of Different Explosion Suppressants

Liu,

Gao,

et al. 2023

ACS Omega

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Performance and mechanism of bentonite in suppressing methane explosions in a pipeline network

Fengxiao

Jia

Xiuyuan

2023

Geomech. Geophys. Geo-energ. Geo-resour.

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Methane explosions threaten the safety of industrial security in modern society. To suppress such explosions, experiments were made through using different masses of bentonite power driven by CO2 within a pipe network set up in an independent way. The three factors, including the peak over-pressure of an explosion, the index of the explosion power, and the time length within which the first wave of flames reached the pipe network’s outlet, were measured to evaluate the performance. Moreover, an analysis on the mechanism of suppressing explosions was also conducted. According to the results, a gradual increase of the powder mass from 20 to 50 g could promote the effect of explosion suppression, but a further increase from50 g to 60 g only led to a slight improvement of the performance. Thus, it was concluded that the use of 50 g of bentonite powder worked best for the suppression of methane explosions when environmental conservation, energy saving as well as practicality were all taken into consideration. What was found in this study is supposed to shed theoretical light on how to transport methane safely with disaster risks reduced effectively.

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Study on the preparation of green suppressors and their characteristics in coal dust flame propagation inhibition

Chen¹,

Zhang²,

Zhang³

et al. 2022

Advanced Powder Technology

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Experimental investigation on the inhibition of coal dust explosion by the composite inhibitor of carbamide and zeolite

Cited by 40 publications

References 45 publications

Research on Explosion Pressure Characteristics of Long Flame Coal Dust and the Inhibition Effect of Different Explosion Suppressants

Research on Explosion Pressure Characteristics of Long Flame Coal Dust and the Inhibition Effect of Different Explosion Suppressants

Performance and mechanism of bentonite in suppressing methane explosions in a pipeline network

Study on the preparation of green suppressors and their characteristics in coal dust flame propagation inhibition

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