气候变化领域集成服务门户(CCPortal): Carbon dioxide sealing-based inhibition of coal spontaneous combustion: A temperature-sensitive micro-encapsulated fire-retardant foamed gel

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DOI	10.1016/j.fuel.2020.117036
	Carbon dioxide sealing-based inhibition of coal spontaneous combustion: A temperature-sensitive micro-encapsulated fire-retardant foamed gel
	Xue D.; Hu X.; Cheng W.; Wu M.; Shao Z.; Li Y.; Zhao Y.; Zhang K.
发表日期	2020
ISSN	162361
卷号	266
英文摘要	In order to enhance the inhibition efficiency of inhibitor on spontaneous combustion of coal and optimize the grouting process of traditional foamed gel, a temperature-sensitive retardant microcapsule (TSRM) was prepared via encapsulation of polyphenols with paraffin. Using composite surfactant (CFA) as a foaming agent and Carbon dioxide (instead of the traditional N2) as the gas source, a small amount of TSRM was incorporated into the water glass solution as base material to prepare microcapsuled retardant foamed gel (CDSFG-TSRM). TSRM temperature sensitivity allows melting at 60 °C followed by the release of tea polyphenols, which extends the effective period of tea polyphenols and improves the inhibitory effect on spontaneous coal combustion. Due to the inorganic polycondensation reaction between carbon dioxide and water glass solution, the preparation process of the material reduces carbon dioxide emission as a greenhouse gas and achieves a rapid gelation process of the mixed solution without the addition of a crosslinking agent, hence simplifying the preparation process of foam gel. The combination of in-situ FTIR and TG-IR indicated that the extent of oxidation on the surface hydroxyls of the coal sample treated with CDSFG-TSRM was low and the concentration of ether bond was high. The characteristic absorption peak intensity of C–H structure and Carbon dioxide were obviously weakened, and the characteristic absorption peak of Carbon dioxide appears at a higher temperature. In addition, CDSFG-TSRM has the advantages of shorter extinguishing time, higher retardant efficiency and difficulty in re-ignition. © 2020 Elsevier Ltd
英文关键词	Carbon dioxide sealing; Coal spontaneous combustion; Fire-retardant mechanism; Microstructure; Temperature-sensitive retardant microcapsule
scopus关键词	Carbon dioxide; Carbon dioxide process; Coal; Coal combustion; Crosslinking; Efficiency; Foams; Gelation; Glass; Global warming; Greenhouse gases; Microstructure; Polypropylenes; Tea; Carbon dioxide emissions; Characteristic absorption; Coal spontaneous combustion; Microcapsules; Polycondensation reactions; Spontaneous combustion of coals; Temperature sensitive; Temperature sensitivity; Spontaneous combustion
来源期刊	Fuel
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/176927
作者单位	College of Mining and Safety Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China; State Key Laboratory of Mining Lab Disaster Prevention and Control Co-found by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao, Shandong 266590, China; College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao Shandong, 266590, China; College of Resources and Environmental Engineering, Binzhou University, Binzhou, Shandong 256603, China; Shandong Lilou Coal Industry Co., Ltd, Heze, Shandong 274700, China
推荐引用方式 GB/T 7714	Xue D.,Hu X.,Cheng W.,et al. Carbon dioxide sealing-based inhibition of coal spontaneous combustion: A temperature-sensitive micro-encapsulated fire-retardant foamed gel[J],2020,266.
APA	Xue D..,Hu X..,Cheng W..,Wu M..,Shao Z..,...&Zhang K..(2020).Carbon dioxide sealing-based inhibition of coal spontaneous combustion: A temperature-sensitive micro-encapsulated fire-retardant foamed gel.Fuel,266.
MLA	Xue D.,et al."Carbon dioxide sealing-based inhibition of coal spontaneous combustion: A temperature-sensitive micro-encapsulated fire-retardant foamed gel".Fuel 266(2020).