Explosion sensitivity and severity of south east asian coals

There is a risk of coal dust explosion to industries mainly in cement processing industries, power plants as well as other activities associated with handling of pulverized coals. This study aims to investigate the effect of chemical properties of the South East Asian coals on the explosibility of t...

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Main Author:	Wan Zaiton, Wan Sulaiman
Format:	Thesis
Language:	English
Published:	2014
Subjects:	TN Mining engineering Metallurgy
Online Access:	http://umpir.ump.edu.my/id/eprint/8781/1/WAN%20ZAITON%20BINTI%20WAN%20SULAIMAN.PDF
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id	my-ump-ir.8781
record_format	uketd_dc
spelling	my-ump-ir.87812021-08-19T04:12:59Z Explosion sensitivity and severity of south east asian coals 2014-04 Wan Zaiton, Wan Sulaiman TN Mining engineering. Metallurgy There is a risk of coal dust explosion to industries mainly in cement processing industries, power plants as well as other activities associated with handling of pulverized coals. This study aims to investigate the effect of chemical properties of the South East Asian coals on the explosibility of three samples of coal dust which were bituminous Bayan, sub bituminous Tanito and Philippine coals. The minimum explosion concentration (MEC), maximum explosion overpressure (PPmax) and dust deflagration index (K) were determined to compare the fundamental data on coal dust characteristics. The explosion experiment was carried out in a Siwek 20 L spherical chamber. The chemical properties of investigated coals such as moisture content, volatile content, fixed carbon content and ash content were analysed by proximate analysis and Thermogravimery analysis (TGA). Both moisture content and ash content of Philippine and Tanito coals were approximately 10 wt %. The coals were hardly exploded at high moisture content and low content of ash gave no influence on explosibility of the coals. High volatility at approximately 40 wt % increases the severity of the dust explosion. Analysis of fixed carbon content and calorific value showed that the coals were in the low ranking class with fixed carbon and calorific value at approximately 40 to 45 wt % and 25000 kJ/kg, respectively. The MEC for the Bayan, Tanito, and Philippine coal dust were 350 kg/M3, 400 kg/m3 , and 315 kg/m3 , respectively. The high results of MEC for the coals were due to non-uniform particle sizes and high moisture content. The Pmax for Bayan, Tanito, and Philippine coal dust were 10.15 bar, 7.35 bar and 10.4 bar, respectively. The for Bayan, Tanito, and Philippine coal dust were 48.04 bar.nVs, 16.83 bar.rn/s, and 52.39 bar.niJs, respectively. High volatility was the reason of high Prnax and hence 2014-04 Thesis http://umpir.ump.edu.my/id/eprint/8781/ http://umpir.ump.edu.my/id/eprint/8781/1/WAN%20ZAITON%20BINTI%20WAN%20SULAIMAN.PDF application/pdf en public masters Universiti Teknologi Malaysia Faculty of Petroleum and Renewable Energy Engineering
institution	Universiti Malaysia Pahang Al-Sultan Abdullah
collection	UMPSA Institutional Repository
language	English
topic	TN Mining engineering Metallurgy
spellingShingle	TN Mining engineering Metallurgy Wan Zaiton, Wan Sulaiman Explosion sensitivity and severity of south east asian coals
description	There is a risk of coal dust explosion to industries mainly in cement processing industries, power plants as well as other activities associated with handling of pulverized coals. This study aims to investigate the effect of chemical properties of the South East Asian coals on the explosibility of three samples of coal dust which were bituminous Bayan, sub bituminous Tanito and Philippine coals. The minimum explosion concentration (MEC), maximum explosion overpressure (PPmax) and dust deflagration index (K) were determined to compare the fundamental data on coal dust characteristics. The explosion experiment was carried out in a Siwek 20 L spherical chamber. The chemical properties of investigated coals such as moisture content, volatile content, fixed carbon content and ash content were analysed by proximate analysis and Thermogravimery analysis (TGA). Both moisture content and ash content of Philippine and Tanito coals were approximately 10 wt %. The coals were hardly exploded at high moisture content and low content of ash gave no influence on explosibility of the coals. High volatility at approximately 40 wt % increases the severity of the dust explosion. Analysis of fixed carbon content and calorific value showed that the coals were in the low ranking class with fixed carbon and calorific value at approximately 40 to 45 wt % and 25000 kJ/kg, respectively. The MEC for the Bayan, Tanito, and Philippine coal dust were 350 kg/M3, 400 kg/m3 , and 315 kg/m3 , respectively. The high results of MEC for the coals were due to non-uniform particle sizes and high moisture content. The Pmax for Bayan, Tanito, and Philippine coal dust were 10.15 bar, 7.35 bar and 10.4 bar, respectively. The for Bayan, Tanito, and Philippine coal dust were 48.04 bar.nVs, 16.83 bar.rn/s, and 52.39 bar.niJs, respectively. High volatility was the reason of high Prnax and hence
format	Thesis
qualification_level	Master's degree
author	Wan Zaiton, Wan Sulaiman
author_facet	Wan Zaiton, Wan Sulaiman
author_sort	Wan Zaiton, Wan Sulaiman
title	Explosion sensitivity and severity of south east asian coals
title_short	Explosion sensitivity and severity of south east asian coals
title_full	Explosion sensitivity and severity of south east asian coals
title_fullStr	Explosion sensitivity and severity of south east asian coals
title_full_unstemmed	Explosion sensitivity and severity of south east asian coals
title_sort	explosion sensitivity and severity of south east asian coals
granting_institution	Universiti Teknologi Malaysia
granting_department	Faculty of Petroleum and Renewable Energy Engineering
publishDate	2014
url	http://umpir.ump.edu.my/id/eprint/8781/1/WAN%20ZAITON%20BINTI%20WAN%20SULAIMAN.PDF
_version_	1783731945335685120

Explosion sensitivity and severity of south east asian coals

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