Study on inhibition effect of ellagic acid on oxidation spontaneous combustion of long-flame coal in Xiashijie

doi:10.16265/j.cnki.issn1003-3033.2024.08.1764

Abstract

Abstract:

In order to investigate the effect of EA on the process of coal oxidation spontaneous combustion, EA was uniformly mixed with long-flame coal in Xiashijie at the mass ratios of 2%,4%,6%,8% and 10% to experiment. The contents of active functional groups and the variation characteristics of thermal transport characteristics of each sample were studied using the microscopic infrared spectroscopy test and laser thermal conductivity test. The optimal mass ratio was determined to be 8% through the evaluation of the inhibitory effect of coal oxidation spontaneous combustion. The coal spontaneous combustion temperature-programmed test was used to compare the influence of four inhibitors on the gas release of coal oxidation spontaneous combustion, and the degree of inhibition of EA on coal oxidation spontaneous combustion was further determined. The results showed that the peak areas of -CH₃, -CH₂, -OH and -C=O- in EA-tc are reduced, but the peak area of C-O is increased compared with RC. At the same coal temperature, the thermal diffusivity and thermal conductivity of the RC are higher than those of EA-tc, and its specific heat is lower than those of EA-tc. The average inhibition rates of thermal diffusivity, specific heat capacity and thermal conductivity of 8% EA on low-temperature oxidation process of coal samples are 20.8%, 9.8% and 13.1%, respectively. Compared with RC, CO release amount of 8% EA-tc is reduced by 52.3% at 170 ℃, and the resistance rate of EA on coal oxidation spontaneous combustion is maintained at 50.5% to 72.5% at 30 to 170 ℃. The inhibitory effect of EA on coal oxidation spontaneous combustion is better than that of the other three inhibitors.

Key words: ellagic acid (EA), coal oxidation spontaneous combustion, resistance rate, thermal transport characteristics, active functional groups

CLC Number:

X936
TD752

XIAO Yang, NAN Shihua, YIN Lan, LI Qingwei, WANG Zhenping. Study on inhibition effect of ellagic acid on oxidation spontaneous combustion of long-flame coal in Xiashijie[J]. China Safety Science Journal, 2024, 34(8): 78-85.

Figures/Tables 14

Table 1

Table 2

Fig.1

Fig.2

Fig.3

Fig.4

Fig.5

Fig.6

Fig.7

Fig.8

Fig.9

Fig.10

Fig.11

Fig.12

References 14

[1]	ZHANG Yutao, LIU Yurui, SHI Xueqiang, et al. Risk evaluation of coal spontaneous combustion on the basis of auto-ignition temperature[J]. Fuel, 2018, 233: 68-76.
[2]	张嬿妮, 舒盼, 刘春辉, 等. 乙二胺四乙酸微胶囊阻化煤自燃性能研究[J]. 煤炭科学技术, 2022, 50(8): 108-117.
	ZHANG Yanni, SHU Pan, LIU Chunhui, et al. Study on inhibition of coal spontaneous combustion by ethylenedia mine tetraacetic acid microcapsule[J]. Coal Science and Technology, 2022, 50(8): 108-117.
[3]	肖旸, 叶星星, 刘昆华, 等. 二次氧化煤自燃过程关键官能团的转变规律[J]. 煤炭学报, 2021, 46(增2): 989-1000.
	XIAO Yang, YE Xingxing, LIU Kunhua, et al. Transformation law of key functional groups in the process of coal secondary oxidation[J]. Journal of China Coal Society, 2021, 46(S2): 989-1000.
[4]	戚绪尧, 王涛, 张兰君, 等. 低共熔溶剂抑制煤自燃的机理研究[J]. 煤炭学报, 2024, 49(4): 1 917-1 930.
	QI Xuyao, WANG Tao, ZHANG Lanjun, et al. Mechanism of deep eutectic solvent on coal spontaneous combustion[J]. Journal of China Coal Society, 2024, 49(4): 1 917-1 930.
[5]	LI Jinhu, LI Zenghua, WANG Chaojie, et al. Experimental study on the inhibitory effect of ethylenediaminetetraacetic acid (EDTA) on coal spontaneous combustion[J]. Fuel Processing Technology, 2018, 178: 312-321.
[6]	娄和壮, 贾廷贵. 惰性气氛对煤自燃过程的竞争吸附差异性研究[J]. 中国安全科学学报, 2020, 30(4): 60-67. doi: 10.16265/j.cnki.issn1003-3033.2020.04.010
	LOU Hezhuang, JlA Tinggui. Competitive adsorption differences during coal spontaneous combustion process in noble gas atmosphere[J]. China Safety Science Journal, 2020, 30(4): 60-67. doi: 10.16265/j.cnki.issn1003-3033.2020.04.010
[7]	LI Jinhu, LI Zenghua, YANG Yongliang, et al. Laboratory study on the inhibitory effect of free radical scavenger on coal spontaneous combustion[J]. Fuel Processing Technology, 2018, 171: 350-360.
[8]	WANG Deming, DOU Guolan, ZHONG Xiaoxing, et al. An experimental approach to selecting chemical inhibitors to retard the spontaneous combustion of coal[J]. Fuel, 2014, 117: 218-223.
[9]	GAO Ao, SUN Yong, HU Xiangming, et al. Substituent positions and types for the inhibitory effects of phenolic inhibitors in coal spontaneous combustion[J]. Fuel, 2022, 309: DOI: 10.1016/j.fuel.2021.122104.
[10]	LIU Peiyu, LI Zenghua, ZHANG Xiaoyan, et al. Study on the inhibition effect of citric acid on coal spontaneous combustion[J]. Fuel, 2022, 310: DOI: 10.1016/j.fuel.2021.122268.
[11]	王福生, 张朝阳, 刘向群, 等. 金属离子螯合剂抑制煤自燃试验研究[J]. 煤炭科学技术, 2023, 51(增1): 1-8.
	WANG Fusheng, ZHANG Chaoyang, LIU Xiangqun, et al. Experimental study on suppression of coal spontaneous combustion by metal ion chelating agents[J]. Coal Science and Technology, 2023, 51(S1): 1-8.
[12]	姜峰, 孙雯倩, 李珍宝, 等. 复合阻化剂抑制煤自燃过程的阶段阻化特性[J]. 煤炭科学技术, 2022, 50(10): 68-75.
	JIANG Feng, SUN Wenqian, LI Zhenbao, et al. Stage inhibition characteristics of composite inhibitor in process of inhibiting coal spontaneous combustion[J]. Coal Science and Technology, 2022, 50(10): 68-75.
[13]	WANG Kai, HU Lihong, DENG Jun, et al. Inhibiting effect and mechanism of polyethylene glycol-citric acid on coal spontaneous combustion[J]. Energy, 2023, 275: 127-522.
[14]	LI Dajiang, XIAO Yang, LYU Huifei, et al. Effects of 1-butyl-3-methylimidazolium tetrafluoroborate on the exothermic and heat transfer characteristics of coal during low-temperature oxidation[J]. Fuel, 2020, 273: DOI: 10.1016/j.fuel.2020.117589.

[1]	GAO Fei, LIANG Ning, JIA Zhe, HOU Qing. Prediction model of coal spontaneous combustion based on SSA-RBF neural network [J]. China Safety Science Journal, 2024, 34(8): 128-137.
[2]	ZHANG Meichang, QI Yun, WANG Wei, LIANG Ran, LIU Rongzheng, BAI Chenhao. Evolution characteristics of spontaneous combustion hazard zone in layered mining of extra thick coal seams [J]. China Safety Science Journal, 2024, 34(8): 147-154.
[3]	MA Dong, XIE Qingdian, ZHAO Zhiqiang, LIU Fang, ZHOU Qigeng. Characteristics of high temperature environment on coal pore structure and oxidation dynamics of Barapukuria coal mine in Bangladesh [J]. China Safety Science Journal, 2024, 34(8): 162-169.
[4]	YU Yong, ZHANG Leilin. Preparation and properties of CuCl-CeO₂ composite CO scavenger [J]. China Safety Science Journal, 2024, 34(8): 186-194.
[5]	WANG Qifei, ZHAO Yihan, LIU Shuai, LIU Haolin, SUN Yingfeng, LI Chengwu. A review on risk management driven by big data in coal mine accidents [J]. China Safety Science Journal, 2024, 34(7): 28-37.
[6]	RUAN Shunling, HAN Simiao, YIN Yihan, LIU Di, LIU Jiajia, JIANG Song. Tailings accumulation dam safety state analysis by integrating heterogeneous hierarchical graph [J]. China Safety Science Journal, 2024, 34(7): 53-62.
[7]	SUN Wenbin, ZHANG Jiyang, WANG Xiao, YANG Hui, FAN Jiancong, ABDUMALIK Olimov. Staged sensing method of fault sudden water based on gray correlation analysis [J]. China Safety Science Journal, 2024, 34(7): 63-70.
[8]	HE Wen, LU Bokai, SHI Wenfang, ZHU Siyu, LIU Jinpeng. Enhanced permeation effect of fine-grained tailings by ultrasound cavitation [J]. China Safety Science Journal, 2024, 34(5): 91-100.
[9]	DU Feng, WANG Kai, SUN Jiazhi, DENG Yun, FENG Chengtao, XIE Chenxiaoxian. Mechanical properties and failure characteristics of coal rock combinations with different inclination angles under uniaxial compression [J]. China Safety Science Journal, 2024, 34(6): 136-145.
[10]	ZHANG Meichang, BAI Chenhao, QI Yun, WANG Wei, XUE Kailong, REN Jiewei. Experimental study on tensile and compressive mechanical properties of coal samples under influence of water content [J]. China Safety Science Journal, 2024, 34(6): 146-156.
[11]	ZHANG Qian, LI Jizu, SHEN Min. Research on influence of emotion on miners' safety behaviour competence [J]. China Safety Science Journal, 2024, 34(6): 39-47.
[12]	XU Na, LIANG Yanxiang, WANG Liang, ZHAO Lili, ZHOU Xueqing, ZHANG Bo. Research on knowledge management in coal mine construction safety field based on knowledge graph [J]. China Safety Science Journal, 2024, 34(5): 28-35.
[13]	YANG Keming, LI Tingting, MA Jun, LI Yaxing, JIANG Kegui, ZHAO Xiangtong. Monitoring of settlement in mining industrial square based on optimal PS point acquisition method [J]. China Safety Science Journal, 2024, 34(5): 44-51.
[14]	PEI Xiaodong, YAO Zhiyuan, WANG Liang, SHAO Hao, WANG Kai, WU Zhengyan. Virtual simulation experimental system for mine fire monitoring and prevention based on Unity3D [J]. China Safety Science Journal, 2024, 34(3): 109-116.
[15]	XU Yongliang, SUN Meng, WANG Lanyun, WANG Yungang. Review of fire smoke flow characteristics and early warning prevention and control of mine belt conveyor [J]. China Safety Science Journal, 2024, 34(3): 117-128.