Investigation on the deflagration inhibition effects of potassium salt-modified dry water on CH4/air mixture

IF 3.6 3区 工程技术 Q2 ENGINEERING, CHEMICAL
Tao Wang , Fan Meng , Weizhai Yi , Hao Li , Fan Nan , Yingying Yu , Litao Liu , Shangyong Zhou , Xuhan Ding , Jun Deng , Zhenmin Luo , Zhe Yang , Yuhuai Sheng
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引用次数: 0

Abstract

In this study, three potassium salts were selected to modify dry water powders to assess their effectiveness in mitigating methane explosions. The physical properties of the potassium salt-modified dry water were analyzed, and their impact on suppressing methane explosions was experimentally examined, including key explosion parameters of the premixed methane/air mixtures. Furthermore, kinetic analysis was conducted to reveal the explosion inhibition mechanism of typical potassium salt-modified dry water. The results demonstrate that the potassium salts enhance the inhibition effects of ordinary dry water. Potassium salt-modified dry water significantly extended both the peak pressure time and the maximum pressure rise rate. When φ = 0.8 and φ = 1.0, the peak methane overpressure time was prolonged by 6.6 times and 6.4 times, respectively, compared to ordinary dry water with the same amount of additive. The effects of explosive inhibitors on the adiabatic flame temperature of methane at different stoichiometric ratios were found to follow the order: 0.8 > 1.2 > 1.0. In addition to physical inhibition, the reduction in the concentrations of O, H, and OH radicals due to the addition of explosion inhibitors is a key factor in suppressing methane combustion. The outcomes of this study contribute to improving the performance of gas explosion inhibitors.
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来源期刊
CiteScore
7.20
自引率
14.30%
发文量
226
审稿时长
52 days
期刊介绍: The broad scope of the journal is process safety. Process safety is defined as the prevention and mitigation of process-related injuries and damage arising from process incidents involving fire, explosion and toxic release. Such undesired events occur in the process industries during the use, storage, manufacture, handling, and transportation of highly hazardous chemicals.
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