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...
| Main Authors: | , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2021-12-01
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| Series: | Case Studies in Thermal Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X2100811X |
| _version_ | 1819177473967915008 |
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| 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 |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-12-22T21:27:13Z |
| format | Article |
| id | doaj.art-26c691af4460434d83398e56706a1d8e |
| institution | Directory Open Access Journal |
| issn | 2214-157X |
| language | English |
| last_indexed | 2024-12-22T21:27:13Z |
| publishDate | 2021-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj.art-26c691af4460434d83398e56706a1d8e2022-12-21T18:12:01ZengElsevierCase Studies in Thermal Engineering2214-157X2021-12-0128101648A novel composite inorganic retarding gel for preventing coal spontaneous combustionJianwei Cheng0Yuhang Wu1Ziwen Dong2Rui Zhang3Wenbin Wang4Guoying Wei5Tingxiang Chu6Zhaoyang Yu7Yi Qin8Guozhong Liu9Haijian Li10School of Safety Engineering, China University of Mining and Technology, Xuzhou, 221116, China; Corresponding author.School of Safety Engineering, China University of Mining and Technology, Xuzhou, 221116, ChinaSchool of Safety Engineering, Ningbo University of Technology, Ningbo, Zhejiang, 315211, ChinaSchool of Safety Engineering, China University of Mining and Technology, Xuzhou, 221116, ChinaShandong Stafu Industrial Control Technology Co., LTD, Zaozhuang, 277000, ChinaSchool of Safety Science and Engineering, Henan Polytechnic University, Jiaozuo, 454000 ChinaSchool of Safety Supervision, North China Institute of Science and Technology, Langfang, 065201, ChinaCollege of Mining, Guizhou University, Guiyang, 550025, ChinaCollege of Safety Engineering, Chongqing University of Science and Technology, Chongqing, 401331, ChinaChina Coal Technology Engineering Group, Chongqing Research Institute Co., LTD., Chongqing, 400037, ChinaCollege of Geology and Mines Engineering, Xinjiang University, Urumqi, 830047, ChinaIn 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.http://www.sciencedirect.com/science/article/pii/S2214157X2100811XCoal spontaneous combustionNovel gelProgrammed heatingInfrared spectroscopyCoal fire prevention |
| spellingShingle | 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 Case Studies in Thermal Engineering Coal spontaneous combustion Novel gel Programmed heating Infrared spectroscopy Coal fire prevention |
| title | 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_short | A novel composite inorganic retarding gel for preventing coal spontaneous combustion |
| title_sort | novel composite inorganic retarding gel for preventing coal spontaneous combustion |
| topic | Coal spontaneous combustion Novel gel Programmed heating Infrared spectroscopy Coal fire prevention |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X2100811X |
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