A novel composite inorganic retarding gel for preventing coal spontaneous combustion

In order to better control the fire problem due to coal oxidations, a novel composite inorganic retarding gel material processed from sodium-based bentonite junction and kaolin, silica, hydrogen peroxide and silicon oxide is developed. For studying the gel's properties the scanning electron mic...

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Autores principales:	Jianwei Cheng, Yuhang Wu, Ziwen Dong, Rui Zhang, Wenbin Wang, Guoying Wei, Tingxiang Chu, Zhaoyang Yu, Yi Qin, Guozhong Liu, Haijian Li
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Coal spontaneous combustion Novel gel Programmed heating Infrared spectroscopy Coal fire prevention Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/26c691af4460434d83398e56706a1d8e
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id	oai:doaj.org-article:26c691af4460434d83398e56706a1d8e
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spelling	oai:doaj.org-article:26c691af4460434d83398e56706a1d8e2021-12-04T04:34:16ZA novel composite inorganic retarding gel for preventing coal spontaneous combustion2214-157X10.1016/j.csite.2021.101648https://doaj.org/article/26c691af4460434d83398e56706a1d8e2021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2214157X2100811Xhttps://doaj.org/toc/2214-157XIn order to better control the fire problem due to coal oxidations, a novel composite inorganic retarding gel material processed from sodium-based bentonite junction and kaolin, silica, hydrogen peroxide and silicon oxide is developed. For studying the gel's properties the scanning electron microscopy (SEM) and the thermogravimetry (TG-DTG) are used to characterize microscopical structures and mass losses with the temperature change process, respectively. For quantifying the inhibitory effect of the novel gel on the spontaneous combustion process of coal oxidation, laboratory tests such as temperature-programmed oxidation and infrared spectroscopy are carried out. Changes of the gases generated from the treated coal sample by the novel gel under the temperature increasing are analyzed. The inhibitory effects of mud and MgCl2 solutions on coal spontaneous combustion are compared. The results show that the surface of the gel is flat and smooth in microscopic scale. Under the a high-temperature, the gel is stable and is not easy to decompose. In detail, the quality loss is within 10%. The novel gel with a concentration of 20% has a good inhibitory effect on CO release and spontaneous combustion in coal combustion. In addition, the novel gel can significantly reduce the consumption of –OH, –CH and other functional groups in the low-temperature oxidation reaction. Hence, the novel gel is a kind of Inhibitor material with a better comprehension performance. This study provides a novel gel for better preventing and controlling the coal spontaneous combustion hazard.Jianwei ChengYuhang WuZiwen DongRui ZhangWenbin WangGuoying WeiTingxiang ChuZhaoyang YuYi QinGuozhong LiuHaijian LiElsevierarticleCoal spontaneous combustionNovel gelProgrammed heatingInfrared spectroscopyCoal fire preventionEngineering (General). Civil engineering (General)TA1-2040ENCase Studies in Thermal Engineering, Vol 28, Iss , Pp 101648- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Coal spontaneous combustion Novel gel Programmed heating Infrared spectroscopy Coal fire prevention Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	Coal spontaneous combustion Novel gel Programmed heating Infrared spectroscopy Coal fire prevention Engineering (General). Civil engineering (General) TA1-2040 Jianwei Cheng Yuhang Wu Ziwen Dong Rui Zhang Wenbin Wang Guoying Wei Tingxiang Chu Zhaoyang Yu Yi Qin Guozhong Liu Haijian Li A novel composite inorganic retarding gel for preventing coal spontaneous combustion
description	In order to better control the fire problem due to coal oxidations, a novel composite inorganic retarding gel material processed from sodium-based bentonite junction and kaolin, silica, hydrogen peroxide and silicon oxide is developed. For studying the gel's properties the scanning electron microscopy (SEM) and the thermogravimetry (TG-DTG) are used to characterize microscopical structures and mass losses with the temperature change process, respectively. For quantifying the inhibitory effect of the novel gel on the spontaneous combustion process of coal oxidation, laboratory tests such as temperature-programmed oxidation and infrared spectroscopy are carried out. Changes of the gases generated from the treated coal sample by the novel gel under the temperature increasing are analyzed. The inhibitory effects of mud and MgCl2 solutions on coal spontaneous combustion are compared. The results show that the surface of the gel is flat and smooth in microscopic scale. Under the a high-temperature, the gel is stable and is not easy to decompose. In detail, the quality loss is within 10%. The novel gel with a concentration of 20% has a good inhibitory effect on CO release and spontaneous combustion in coal combustion. In addition, the novel gel can significantly reduce the consumption of –OH, –CH and other functional groups in the low-temperature oxidation reaction. Hence, the novel gel is a kind of Inhibitor material with a better comprehension performance. This study provides a novel gel for better preventing and controlling the coal spontaneous combustion hazard.
format	article
author	Jianwei Cheng Yuhang Wu Ziwen Dong Rui Zhang Wenbin Wang Guoying Wei Tingxiang Chu Zhaoyang Yu Yi Qin Guozhong Liu Haijian Li
author_facet	Jianwei Cheng Yuhang Wu Ziwen Dong Rui Zhang Wenbin Wang Guoying Wei Tingxiang Chu Zhaoyang Yu Yi Qin Guozhong Liu Haijian Li
author_sort	Jianwei Cheng
title	A novel composite inorganic retarding gel for preventing coal spontaneous combustion
title_short	A novel composite inorganic retarding gel for preventing coal spontaneous combustion
title_full	A novel composite inorganic retarding gel for preventing coal spontaneous combustion
title_fullStr	A novel composite inorganic retarding gel for preventing coal spontaneous combustion
title_full_unstemmed	A novel composite inorganic retarding gel for preventing coal spontaneous combustion
title_sort	novel composite inorganic retarding gel for preventing coal spontaneous combustion
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/26c691af4460434d83398e56706a1d8e
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A novel composite inorganic retarding gel for preventing coal spontaneous combustion

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