Vented ethanol-gasoline vapor explosions initiated by two symmetric sparks in a channel

Pan, Chuanyu; Sun, Huazhong; Zhu, Xiaolong; Zhao, Jingchen; Wang, Xishi; Liu, Yangpeng

doi:10.1016/j.fuel.2022.125499

Cited by 3 publications

(2 citation statements)

References 43 publications

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“…The widespread use of ethanol is in line with the requirements of international green and low‐carbon development strategies 5 . However, ethanol vapor explosion can cause serious disasters 6,7 . In addition, ethanol production requires high temperatures and pressures, which will lead to higher risks.…”

Section: Introductionmentioning

confidence: 98%

“…5 However, ethanol vapor explosion can cause serious disasters. 6,7 In addition, ethanol production requires high temperatures and pressures, which will lead to higher risks. Therefore, it is crucial to assess the ethanol-air mixture explosion characteristics, especially because it has very different physical and chemical properties under high pressures and temperatures.…”

Section: Introductionmentioning

confidence: 99%

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Study of ethanol vapor explosion and prediction based on chemical kinetics under high temperature and pressure

Qi,

Ding,

Pan

et al. 2023

Process Safety Progress

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The study of the explosion parameters of ethanol–air mixture at high pressure and temperature is essential for the safe production of ethanol. However, the explosion characteristics of ethanol vapor at various pressures and temperatures are limited. The mechanism at the flammability limits of ethanol has not been clarified, and the corresponding prediction model is also lacking. In this study, chemical kinetics and machine learning are used to study the mechanism of ethanol explosion and build predictive models, respectively. Our findings show that an increase in the initial pressure has a more pronounced influence on the explosion pressure (Pex) and pressure rise rate (dp/dt) than an increase of temperature. The variation trend of the upper flammability limit (UFL) of ethanol is related to the different effects of temperature and pressure on OH radicals. H + O2<>OH + O and HO2 + CH3<>OH + CH3O had the greatest effect on the generation of OH radicals. The quantitative relationship between the H, O, and OH radicals and UFL was constructed by machine learning, providing a new research perspective for the prediction of the UFL of an inflammable fuel under different pressures and temperatures. The results of the study will provide theoretical and practical guidance for the prevention and control of explosions in the ethanol production process.

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Section: Introductionmentioning

confidence: 98%