Experimental study on thermal effect and gas release laws of coal-polyurethane cooperative spontaneous combustion

Abstract This paper presents a research on the kinetics and gas release laws of the cooperative spontaneous combustion of coal-polyurethane binary system by means of thermogravimetric analysis and spontaneous combustion simulation experiments. The coal-polyurethane binary system is more prone than i...

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Autores principales:	Haiyan Wang, Yao Tian, Jinglei Li, Xiao Chen
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/9c5a0f787e084cd58339f7f9097688e2
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spelling	oai:doaj.org-article:9c5a0f787e084cd58339f7f9097688e22021-12-02T15:23:39ZExperimental study on thermal effect and gas release laws of coal-polyurethane cooperative spontaneous combustion10.1038/s41598-021-81537-52045-2322https://doaj.org/article/9c5a0f787e084cd58339f7f9097688e22021-01-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-81537-5https://doaj.org/toc/2045-2322Abstract This paper presents a research on the kinetics and gas release laws of the cooperative spontaneous combustion of coal-polyurethane binary system by means of thermogravimetric analysis and spontaneous combustion simulation experiments. The coal-polyurethane binary system is more prone than individual samples to combustion. The polyurethane mass fraction has a great influence on the cooperative spontaneous combustion process. As the polyurethane mass fraction rises, the activation energies of oxygen absorption stage and pyrolysis stage decrease. The combustion residues of coal-polyurethane binary system scorches into lumps and the surfaces of the particles become rougher. During spontaneous combustion, the initial release temperatures of the four gases CO2, CO, C2H6 and C2H4 drop as the polyurethane mass fraction increases. The gas release amount of them increases with increasing polyurethane mass fraction. And the amount of CH4 decreases as the polyurethane mass fraction increases. The CO/CO2 ratio with temperature for different polyurethane mass fraction have the same trends. The results of this study have implications concerning polyurethane materials application and fire protection in coal mine.Haiyan WangYao TianJinglei LiXiao ChenNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-13 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Haiyan Wang Yao Tian Jinglei Li Xiao Chen Experimental study on thermal effect and gas release laws of coal-polyurethane cooperative spontaneous combustion
description	Abstract This paper presents a research on the kinetics and gas release laws of the cooperative spontaneous combustion of coal-polyurethane binary system by means of thermogravimetric analysis and spontaneous combustion simulation experiments. The coal-polyurethane binary system is more prone than individual samples to combustion. The polyurethane mass fraction has a great influence on the cooperative spontaneous combustion process. As the polyurethane mass fraction rises, the activation energies of oxygen absorption stage and pyrolysis stage decrease. The combustion residues of coal-polyurethane binary system scorches into lumps and the surfaces of the particles become rougher. During spontaneous combustion, the initial release temperatures of the four gases CO2, CO, C2H6 and C2H4 drop as the polyurethane mass fraction increases. The gas release amount of them increases with increasing polyurethane mass fraction. And the amount of CH4 decreases as the polyurethane mass fraction increases. The CO/CO2 ratio with temperature for different polyurethane mass fraction have the same trends. The results of this study have implications concerning polyurethane materials application and fire protection in coal mine.
format	article
author	Haiyan Wang Yao Tian Jinglei Li Xiao Chen
author_facet	Haiyan Wang Yao Tian Jinglei Li Xiao Chen
author_sort	Haiyan Wang
title	Experimental study on thermal effect and gas release laws of coal-polyurethane cooperative spontaneous combustion
title_short	Experimental study on thermal effect and gas release laws of coal-polyurethane cooperative spontaneous combustion
title_full	Experimental study on thermal effect and gas release laws of coal-polyurethane cooperative spontaneous combustion
title_fullStr	Experimental study on thermal effect and gas release laws of coal-polyurethane cooperative spontaneous combustion
title_full_unstemmed	Experimental study on thermal effect and gas release laws of coal-polyurethane cooperative spontaneous combustion
title_sort	experimental study on thermal effect and gas release laws of coal-polyurethane cooperative spontaneous combustion
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/9c5a0f787e084cd58339f7f9097688e2
work_keys_str_mv	AT haiyanwang experimentalstudyonthermaleffectandgasreleaselawsofcoalpolyurethanecooperativespontaneouscombustion AT yaotian experimentalstudyonthermaleffectandgasreleaselawsofcoalpolyurethanecooperativespontaneouscombustion AT jingleili experimentalstudyonthermaleffectandgasreleaselawsofcoalpolyurethanecooperativespontaneouscombustion AT xiaochen experimentalstudyonthermaleffectandgasreleaselawsofcoalpolyurethanecooperativespontaneouscombustion
_version_	1718387280225239040

Experimental study on thermal effect and gas release laws of coal-polyurethane cooperative spontaneous combustion

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