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[1]贾海林,翟晨光,赵晓举,等.煤中掺比伴生硫化物的自燃特性分析[J].中国安全生产科学技术,2018,14(10):106-111.[doi:10.11731/j.issn.1673-193x.2018.10.017]
　JIA Hailin,ZHAI Chenguang,ZHAO Xiaoju,et al.Analysis on spontaneous combustion characteristics of coal adding associated sulfide[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2018,14(10):106-111.[doi:10.11731/j.issn.1673-193x.2018.10.017]
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煤中掺比伴生硫化物的自燃特性分析
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
14
期数:
2018年10期
页码:
106-111
栏目:
职业安全卫生管理与技术
出版日期:
2018-10-31

文章信息/Info

Title:
Analysis on spontaneous combustion characteristics of coal adding associated sulfide
文章编号:
1673-193X(2018)-10-0106-06
作者:
贾海林1; 2; 翟晨光1; 2; 赵晓举3; 徐彦伟3; 张民远3
(1.河南理工大学 河南省瓦斯地质与瓦斯治理重点实验室-省部共建国家重点实验室培育基地，河南 焦作 454000；2. 河南理工大学 安全科学与工程学院，河南 焦作 454000；3.平顶山天安煤业股份有限公司 二矿，河南 平顶山 467099)
Author(s):
JIA Hailin1; 2;  ZHAI Chenguang1; 2;  ZHAO Xiaoju3;  XU Yanwei3;  ZHANG Minyuan3
(1.State Key Laboratory Cultivation Base for Gas Geology and Gas Control, Henan Polytechnic University, Jiaozuo Henan 454000, China;2.College of Safety Science and Engineering, Henan Polytechnic University, Jiaozuo Henan 454000, China;3.The Second Coalmine, Pingdingshan Tianan Coal Mining Co., Ltd., Pingdingshan Henan 467099, China)
关键词:
煤自燃特性; 伴生硫化物; 可燃性指数; 稳燃性判别指数; 活化能
Keywords:
spontaneous combustion characteristics of coal;  associated sulfide;  flammability index;  combustion stability judgment index;  activation energy
分类号:
X936
DOI:
10.11731/j.issn.1673-193x.2018.10.017
文献标志码:
A
摘要:
为了深入探究矿井下伴生硫化物对煤自燃及着火燃烧特性的影响，向原煤中添加不同量的含硫物配制4种不同含硫量的煤样，通过TG实验、DSC测试和XRD分析，研究伴生硫化物对煤自燃及着火燃烧特性的影响规律；基于Coats-Redfern法计算煤中掺加不同伴生硫化物时煤燃烧阶段的活化能。研究结果表明：随着煤中掺比伴生硫化物的增多，煤的特征温度相应减小，而吸氧量、可燃和稳燃指数相应增大，原煤中混入伴生硫化物后更易自燃；随着煤中掺比伴生硫化物的增多，煤燃烧阶段的活化能降低，煤更易着火燃烧；伴生硫化物的主要成分为水绿矾、叶绿矾，这些物质在常温下遇水和氧气能够发生化学循环反应，反应放热促使了煤更易自燃；伴生硫化物在温度高于200℃以后整体表现为放热，在温度为565℃时达到放热峰值，这使得煤燃烧阶段的活化能降低，煤更易燃烧。
Abstract:
In order to further explore the influence of underground associated sulfide on the spontaneous combustion and ignition characteristics of coal, four types of coal samples with different sulfur contents were prepared by adding the sulfurcontained material with different amount into the raw coal, and the influence laws of associated sulfide on the spontaneous combustion and ignition characteristics of coal were studied through the TG experiments, DSC tests and XRD analysis. The activation energy of coal adding different associated sulfide during the combustion stage was calculated based on the CoatsRedfern method. The results showed that with the increase of associated sulfide in the coal, the characteristic temperature of coal decreased accordingly, while the oxygen absorption amount, flammability index and combustion stability index increased accordingly, which indicated that the spontaneous combustion of coal was more prone to occur after adding the associated sulfide into the raw coal. With the increase of associated sulfide in the coal, the activation energy of coal during the combustion stage decreased, and the coal was easily to ignite and burn. The main components of the associated sulfide were melanterite and copiapite, and the chemical circular reaction could occur when these materials encountered with water and oxygen at room temperature, then the exothermic reaction promoted the spontaneous combustion of coal. The associated sulfide were exothermic when the temperature was above 200℃ as a whole, and the exothermic peak appeared at 565℃, which made the activation energy of coal during the combustion stage decrease and the coal easily to burn.

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备注/Memo

备注/Memo:
收稿日期： 2017-11-30 基金项目： 国家重点研发计划项目（2018YFC0807900）；国家自然科学基金项目(51304069)；教育部创新团队发展支持计划项目（IRT_16R22）；河南理工大学博士基金项目(B2015-04) 作者简介： 贾海林，博士，副教授，主要研究方向为矿井火灾防治和消防理论与技术。
更新日期/Last Update: 2018-11-07