Prediction of evaporative diffusion behavior and explosion damage in gasoline leakage accidents

Okamoto, Katsuhiro; Ichikawa, Toshikazu; Fujimoto, Jumpei; Kashiwagi, Nobuyuki; Nakagawa, Masahiro; Hagiwara, Takao; Honma, Masakatsu

doi:10.1016/j.psep.2021.02.010

Cited by 19 publications

(3 citation statements)

References 24 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%

Section: Introductionmentioning

confidence: 99%

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

View full text Add to dashboard Cite

show abstract

“…One of the main environmental impacts of refinery process units is represented by atmospheric emissions, which are typically constituent of CO, CO 2 , SO 2 , NO X , CH 4 , particulates, and volatile organic compounds (VOCs) [1][2][3]. VOCs are emitted from a variety of sources [4][5][6][7][8][9][10][11] and, in recent years, the attention toward the emission of VOCs has been increasing due to the consistent amount of VOCs emitted from different industrial processes and their environmental and health impact [12][13][14]. In addition, VOC emissions can produce odor annoyance [15][16][17], which can have a negative impact on life quality [18,19].…”

Section: Introductionmentioning

confidence: 99%

Estimation of Emission Factors for Hazardous Air Pollutants from Petroleum Refineries

et al. 2021

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The hazardous air pollutants (HAPs) group is composed of 187 chemicals that are known to be potentially carcinogenic and dangerous for human health. Due to their toxicological impact, HAPs are an increasingly studied class of compounds. Of the different HAPs sources, refineries are one of the major sources. In order to obtain a preliminary assessment of the impact of a refinery in terms of emissions, a useful instrument is the determination of the emission factor (EF). For this reason, this work, focusing on the USA refining scenario, aims to provide evidence for a generic trend in refinery emissions to evaluate a correlation between the plant size and the amount of its emissions, in particular the HAPs emissions. Based on the analysis of the data collected from the U.S. Environmental Protection Agency (US EPA), a general trend in the emissions from refinery plants was established, showing a positive correlation between the HAPs emissions and the refinery size, represented by a value of the Pearson correlation coefficient r close to 1. Once this correlation was highlighted, a purpose of this work became the estimation of an organic HAPs emission factor (EF): from a whole refining plant, the EF of the total organic HAPs is equal to 10 g emitted for each ton of crude oil processed. Moreover, it was also possible to undertake the same evaluation for two specific HAP molecules: benzene and formaldehyde. The benzene and formaldehyde EFs are equal to, respectively, 0.8 g and 0.2 g for each ton of processed crude oil. This work provides a simple rule of thumb for the estimation of hazardous substances emitted from petroleum refineries in their mean operating conditions.

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Effect of multi-walled carbon nanotubes (MWCNT) addition on the flame spread rate over a Jet A pool

Roncancio

Navarkar

Mejia

et al. 2021

Fire Safety Journal

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Prediction of evaporative diffusion behavior and explosion damage in gasoline leakage accidents

Cited by 19 publications

References 24 publications

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

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

Estimation of Emission Factors for Hazardous Air Pollutants from Petroleum Refineries

Effect of multi-walled carbon nanotubes (MWCNT) addition on the flame spread rate over a Jet A pool

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