[1]赵婧昱,张嬿妮,宋佳佳,等.促进1/3焦煤氧化的临界参数分析[J].西安科技大学学报,2018,(04):592-597.[doi:10.13800/j.cnki.xakjdxxb.2018.0411 ]
 ZHAO Jing-yu,ZHANG Yan-ni,SONG Jia-jia,et al.Analysis of critical parameters of 1/3 coking coal during oxidized promotion period[J].Journal of Xi'an University of Science and Technology,2018,(04):592-597.[doi:10.13800/j.cnki.xakjdxxb.2018.0411 ]
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促进1/3焦煤氧化的临界参数分析(/HTML)
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西安科技大学学报[ISSN:1672-9315/CN:61-1434/N]

卷:
期数:
2018年04期
页码:
592-597
栏目:
出版日期:
2018-07-15

文章信息/Info

Title:
Analysis of critical parameters of 1/3 coking coal during oxidized promotion period
文章编号:
1672-9315(2018)04-0592-06
作者:
赵婧昱12张嬿妮12宋佳佳12王 凯12
1.西安科技大学 安全科学与工程学院,陕西 西安 710054; 2.西安科技大学 陕西省煤火灾害防治重点实验室,陕西 西安 710054
Author(s):
ZHAO Jing-yu12ZHANG Yan-ni12SONG Jia-jia12WANG Kai12
(1.College of Safety Science and Engineering,Xi'an University of Science and Technology,Xi'an 710054,China; 2.Shaanxi Key Laboratory of Prevention and Control of Coal Fire,Xi'an University of Science and Technology,Xi'an 710054,China)
关键词:
1/3焦煤 氧化 自然发火期 活性基团 指标气体
Keywords:
1/3 coking coal oxidation spontaneous combustion period active groups indicator gas
分类号:
TP 752.2
DOI:
10.13800/j.cnki.xakjdxxb.2018.0411
文献标志码:
A
摘要:
1/3焦煤是中国居民生活和工业用煤的优质选择,为了预防1/3焦煤的自然发火,阻抗有利于促进发火的临界点,以淮南矿区1/3焦煤为研究对象,研究1/3焦煤氧化过程中自然特征参数的变化规律,选取淮南矿区谢一矿和张集矿1/3焦煤煤样,采用煤自然发火模拟实验系统和热重-红外光谱联用实验对煤样进行测试研究。结果表明:谢一矿自然发火期为89天,张集矿自然发火期为60 d; 临界温度分别为62.9和71.8 ℃,临界温度之前,指标气体CO的含量、耗氧速率、放热强度指标均较小且平缓上升,临界温度之后,气体含量曲线呈指数模式急剧增大,主要由羧基、羟基和羰基等活性官能团氧化分解以及CO键振动产生,此时,煤样耗氧速率和放热强度也随着气体量的增大,不断的呈指数形式迅速增长。
Abstract:
1/3 coking coal is a high-quality choice for residents' living and industrial coal in China.To prevent the spontaneous combustion of 1/3 coking coal and the temperature rising to critical temperature,Xieyi and Zhangji coal of Huainan coal mine were selected,and coal spontaneous combustion simulation system and TG-FTIR experimental system were adopted to study the changing rules of characteristic parameters in the oxidation process of 1/3 coking coal.The results prove that the spontaneous combustion period of Xieyi and Zhangji coal is 89 and 60 days,respectively.Moreover,the critical temperature is 62.9 and 71.8 ℃ of Xieyi and Zhangji coal.Before the critical temperature,the indictor gas of CO,oxygen consumption rate and heat release intensity have a low content and increase very slowly with the temperature rise.On the contrary,those parameters increase dramatically after critical temperature.The gases are released by the oxidation and decomposition reaction of carboxyl,hydroxyl,carbonyl and other active groups in coal molecule.Moreover,the oxygen consumption rate and heat release intensity are increased exponentially.

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备注/Memo

备注/Memo:
收稿日期:2018-01-10 责任编辑:刘 洁
基金项目:国家自然科学基金(51674191,51704226); 西安科技大学博士(后)启动金项目(2017QDJ057)
通信作者:赵婧昱(1990-),女,内蒙古鄂尔多斯人,博士,讲师,E-mail:zhaojingyu2014@126.com
更新日期/Last Update: 2018-08-29