Experimental study on the effect of thermosensitive controlled-release inhibitor on coal spontaneous combustion
Inhibitors are widely used on-site due to their effective prevention. The effect of a novel compound inhibitor composed of thermosensitive hydrogel (TSH) and antioxidants (tea polyphenols (TP) and L-ascorbic acid (VC)) on coal spontaneous combustion (CSC) characteristics was studied. Its inhibitory...
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Elsevier
2025-04-01
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| Series: | Case Studies in Thermal Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X25002151 |
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| author | Shengli Guo Weile Geng Shujie Yuan Xiaoxue Xu Shuwen Zhang Qingguo Ren Chengli Liu |
| author_facet | Shengli Guo Weile Geng Shujie Yuan Xiaoxue Xu Shuwen Zhang Qingguo Ren Chengli Liu |
| author_sort | Shengli Guo |
| collection | DOAJ |
| description | Inhibitors are widely used on-site due to their effective prevention. The effect of a novel compound inhibitor composed of thermosensitive hydrogel (TSH) and antioxidants (tea polyphenols (TP) and L-ascorbic acid (VC)) on coal spontaneous combustion (CSC) characteristics was studied. Its inhibitory effect was compared with that of the single component or MgCl2 by macroscopic and microscopic tests. The results show that the release of CO or CO2 from coal treated with inhibitors during temperature-programmed tests was reduced, and the crossing-point temperature of TSH-TP/VC-treated coal increased by 21.4 °C. The content of –CH2, –CH3 and oxygen-containing group in inhibitor-treated coal decreased than before, the characteristic temperature of spontaneous combustion increased significantly, and the mass gain values of coal treated with TSH-TP/VC, TSH, TP/VC or MgCl2 decreased by 0.99 %, 0.93 %, 0.87 %, 0.24 %, respectively. The inhibitory efficacy of TSH-TP/VC is superior to the effect of single component or traditional inhibitor MgCl2, and it is effective in inhibiting the entire oxidative decomposition and combustion stage of coal. TSH can effectively cover the coal body and remove the accumulated heat. At the same time, TP/VC hinders the emergence of free radicals and chelates with metal ions, thereby exhibiting a significant suppression of CSC. |
| format | Article |
| id | doaj-art-fa17e2f31ae543e8a4ca2091ca0b3da8 |
| institution | DOAJ |
| issn | 2214-157X |
| language | English |
| publishDate | 2025-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj-art-fa17e2f31ae543e8a4ca2091ca0b3da82025-08-20T03:05:39ZengElsevierCase Studies in Thermal Engineering2214-157X2025-04-016810595510.1016/j.csite.2025.105955Experimental study on the effect of thermosensitive controlled-release inhibitor on coal spontaneous combustionShengli Guo0Weile Geng1Shujie Yuan2Xiaoxue Xu3Shuwen Zhang4Qingguo Ren5Chengli Liu6School of Safety and Management Engineering, Hunan Institute of Technology, Hengyang, 421002, China; School of Safety Science and Engineering, Anhui University of Science and Technology, Huainan, Anhui, 232001, ChinaSchool of Safety and Management Engineering, Hunan Institute of Technology, Hengyang, 421002, China; Corresponding author.School of Safety Science and Engineering, Anhui University of Science and Technology, Huainan, Anhui, 232001, China; Corresponding author.School of Safety Science and Engineering, Anhui University of Science and Technology, Huainan, Anhui, 232001, ChinaSchool of Resources Environment and Safety Engineering, University of South China, Hengyang, 421001, ChinaCCFEB Civil Engineering Co., Ltd., Changsha, 410004, ChinaSchool of Safety and Management Engineering, Hunan Institute of Technology, Hengyang, 421002, ChinaInhibitors are widely used on-site due to their effective prevention. The effect of a novel compound inhibitor composed of thermosensitive hydrogel (TSH) and antioxidants (tea polyphenols (TP) and L-ascorbic acid (VC)) on coal spontaneous combustion (CSC) characteristics was studied. Its inhibitory effect was compared with that of the single component or MgCl2 by macroscopic and microscopic tests. The results show that the release of CO or CO2 from coal treated with inhibitors during temperature-programmed tests was reduced, and the crossing-point temperature of TSH-TP/VC-treated coal increased by 21.4 °C. The content of –CH2, –CH3 and oxygen-containing group in inhibitor-treated coal decreased than before, the characteristic temperature of spontaneous combustion increased significantly, and the mass gain values of coal treated with TSH-TP/VC, TSH, TP/VC or MgCl2 decreased by 0.99 %, 0.93 %, 0.87 %, 0.24 %, respectively. The inhibitory efficacy of TSH-TP/VC is superior to the effect of single component or traditional inhibitor MgCl2, and it is effective in inhibiting the entire oxidative decomposition and combustion stage of coal. TSH can effectively cover the coal body and remove the accumulated heat. At the same time, TP/VC hinders the emergence of free radicals and chelates with metal ions, thereby exhibiting a significant suppression of CSC.http://www.sciencedirect.com/science/article/pii/S2214157X25002151Mine firesCoal spontaneous combustionOxidation inhibitionPhysical-chemical inhibitory effect |
| spellingShingle | Shengli Guo Weile Geng Shujie Yuan Xiaoxue Xu Shuwen Zhang Qingguo Ren Chengli Liu Experimental study on the effect of thermosensitive controlled-release inhibitor on coal spontaneous combustion Case Studies in Thermal Engineering Mine fires Coal spontaneous combustion Oxidation inhibition Physical-chemical inhibitory effect |
| title | Experimental study on the effect of thermosensitive controlled-release inhibitor on coal spontaneous combustion |
| title_full | Experimental study on the effect of thermosensitive controlled-release inhibitor on coal spontaneous combustion |
| title_fullStr | Experimental study on the effect of thermosensitive controlled-release inhibitor on coal spontaneous combustion |
| title_full_unstemmed | Experimental study on the effect of thermosensitive controlled-release inhibitor on coal spontaneous combustion |
| title_short | Experimental study on the effect of thermosensitive controlled-release inhibitor on coal spontaneous combustion |
| title_sort | experimental study on the effect of thermosensitive controlled release inhibitor on coal spontaneous combustion |
| topic | Mine fires Coal spontaneous combustion Oxidation inhibition Physical-chemical inhibitory effect |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X25002151 |
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