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Explosion characteristics assessment of premixed biogas/air mixture in a 20-L spherical vessel

The understanding of biogas explosion characteristics is needed to describe the severity of the explosion. Biogas is a flammable gas and will explode when ignited. This study reports the experimental results on biogas explosion characteristics in a standard 20-L spherical vessel under quiescent cond...

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Main Authors:	Sulaiman, Siti Zubaidah, Muhammad Harinder Khan, Nur Aqidah, Izhab, Izirwan, Md. Shaarani, Shalyda, Abdul Mudalip, Siti Kholijah, Che Man, Rohaida, Mohd. Arshad, Zatul Iffah, Md. Kasmani, Rafiziana, Sulaiman, Sarina
Format:	Article
Published:	Taylor and Francis Ltd. 2021
Subjects:	TP Chemical technology
Online Access:	http://eprints.utm.my/id/eprint/97843/ http://dx.doi.org/10.1080/00986445.2020.1780214
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spelling	my.utm.978432022-11-07T09:49:23Z http://eprints.utm.my/id/eprint/97843/ Explosion characteristics assessment of premixed biogas/air mixture in a 20-L spherical vessel Sulaiman, Siti Zubaidah Muhammad Harinder Khan, Nur Aqidah Izhab, Izirwan Md. Shaarani, Shalyda Abdul Mudalip, Siti Kholijah Che Man, Rohaida Mohd. Arshad, Zatul Iffah Md. Kasmani, Rafiziana Sulaiman, Sarina TP Chemical technology The understanding of biogas explosion characteristics is needed to describe the severity of the explosion. Biogas is a flammable gas and will explode when ignited. This study reports the experimental results on biogas explosion characteristics in a standard 20-L spherical vessel under quiescent conditions using electric spark (10 J) as an ignition source. Computational Fluid Dynamic (CFD) code FLame ACcelaration Simulator (FLACs) was used to simulate the biogas explosion based on the experimental case study. The dependence of explosion characteristics such as explosion pressure (P max), rate of pressure rise (dP/dt), and deflagration index (KG), on biogas concentration and carbon dioxide, CO2 composition is demonstrated. The data allow for the evaluation of the potential severity of biogas explosion, which in turn helps engineers design the explosion mitigation and prevention device related to this gas. The experimental data reported from this study concluded that P max = 8–8.50 bar, the dP/dt = 100–400 bar/ms and the K G = 32.7–121 bar m/ms were recorded at equivalence ratio, (ER) = 1.2 with CO2 composition in the biogas = 30% vol/vol. It was found that the severity of the biogas explosion increased proportionally with the biogas concentration. On the contrary, the explosive intensity was weakened by increasing the CO2 concentration due to the physical effects of CO2 and thermal instability. This study also recorded that the biogas explosion was categorized under hazard level = St-3 indicating a catastrophic explosion. These data are important for preventing and mitigating the biogas explosion. Taylor and Francis Ltd. 2021 Article PeerReviewed Sulaiman, Siti Zubaidah and Muhammad Harinder Khan, Nur Aqidah and Izhab, Izirwan and Md. Shaarani, Shalyda and Abdul Mudalip, Siti Kholijah and Che Man, Rohaida and Mohd. Arshad, Zatul Iffah and Md. Kasmani, Rafiziana and Sulaiman, Sarina (2021) Explosion characteristics assessment of premixed biogas/air mixture in a 20-L spherical vessel. Chemical Engineering Communications, 208 (4). pp. 583-591. ISSN 0098-6445 http://dx.doi.org/10.1080/00986445.2020.1780214 DOI : 10.1080/00986445.2020.1780214
institution	Universiti Teknologi Malaysia
building	UTM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Teknologi Malaysia
content_source	UTM Institutional Repository
url_provider	http://eprints.utm.my/
topic	TP Chemical technology
spellingShingle	TP Chemical technology Sulaiman, Siti Zubaidah Muhammad Harinder Khan, Nur Aqidah Izhab, Izirwan Md. Shaarani, Shalyda Abdul Mudalip, Siti Kholijah Che Man, Rohaida Mohd. Arshad, Zatul Iffah Md. Kasmani, Rafiziana Sulaiman, Sarina Explosion characteristics assessment of premixed biogas/air mixture in a 20-L spherical vessel
description	The understanding of biogas explosion characteristics is needed to describe the severity of the explosion. Biogas is a flammable gas and will explode when ignited. This study reports the experimental results on biogas explosion characteristics in a standard 20-L spherical vessel under quiescent conditions using electric spark (10 J) as an ignition source. Computational Fluid Dynamic (CFD) code FLame ACcelaration Simulator (FLACs) was used to simulate the biogas explosion based on the experimental case study. The dependence of explosion characteristics such as explosion pressure (P max), rate of pressure rise (dP/dt), and deflagration index (KG), on biogas concentration and carbon dioxide, CO2 composition is demonstrated. The data allow for the evaluation of the potential severity of biogas explosion, which in turn helps engineers design the explosion mitigation and prevention device related to this gas. The experimental data reported from this study concluded that P max = 8–8.50 bar, the dP/dt = 100–400 bar/ms and the K G = 32.7–121 bar m/ms were recorded at equivalence ratio, (ER) = 1.2 with CO2 composition in the biogas = 30% vol/vol. It was found that the severity of the biogas explosion increased proportionally with the biogas concentration. On the contrary, the explosive intensity was weakened by increasing the CO2 concentration due to the physical effects of CO2 and thermal instability. This study also recorded that the biogas explosion was categorized under hazard level = St-3 indicating a catastrophic explosion. These data are important for preventing and mitigating the biogas explosion.
format	Article
author	Sulaiman, Siti Zubaidah Muhammad Harinder Khan, Nur Aqidah Izhab, Izirwan Md. Shaarani, Shalyda Abdul Mudalip, Siti Kholijah Che Man, Rohaida Mohd. Arshad, Zatul Iffah Md. Kasmani, Rafiziana Sulaiman, Sarina
author_facet	Sulaiman, Siti Zubaidah Muhammad Harinder Khan, Nur Aqidah Izhab, Izirwan Md. Shaarani, Shalyda Abdul Mudalip, Siti Kholijah Che Man, Rohaida Mohd. Arshad, Zatul Iffah Md. Kasmani, Rafiziana Sulaiman, Sarina
author_sort	Sulaiman, Siti Zubaidah
title	Explosion characteristics assessment of premixed biogas/air mixture in a 20-L spherical vessel
title_short	Explosion characteristics assessment of premixed biogas/air mixture in a 20-L spherical vessel
title_full	Explosion characteristics assessment of premixed biogas/air mixture in a 20-L spherical vessel
title_fullStr	Explosion characteristics assessment of premixed biogas/air mixture in a 20-L spherical vessel
title_full_unstemmed	Explosion characteristics assessment of premixed biogas/air mixture in a 20-L spherical vessel
title_sort	explosion characteristics assessment of premixed biogas/air mixture in a 20-l spherical vessel
publisher	Taylor and Francis Ltd.
publishDate	2021
url	http://eprints.utm.my/id/eprint/97843/ http://dx.doi.org/10.1080/00986445.2020.1780214
_version_	1751536111372468224
score	13.211869

Explosion characteristics assessment of premixed biogas/air mixture in a 20-L spherical vessel

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