[1]赵维国,李经文,张辛亥,等.东荣矿区煤样氧化反应动力学热分析[J].西安科技大学学报,2020,(02):238-243.
 ZHAO Wei-guo,LI Jing-wen,ZHANG Xin-hai,et al.Kinetics and thermal analysis of oxidation reaction of coal samples in Dongrong mining area[J].Journal of Xi'an University of Science and Technology,2020,(02):238-243.
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东荣矿区煤样氧化反应动力学热分析(/HTML)
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西安科技大学学报[ISSN:1672-9315/CN:61-1434/N]

卷:
期数:
2020年02期
页码:
238-243
栏目:
出版日期:
2020-03-30

文章信息/Info

Title:
Kinetics and thermal analysis of oxidation reaction of coal samples in Dongrong mining area
文章编号:
1672-9315(2020)02-0238-06
作者:
赵维国1李经文23张辛亥23卢苗苗23林清松4张家亮4
(1.辽宁工程技术大学 矿业学院,辽宁 阜新 123000; 2.西安科技大学 西部矿井开采及灾害防治教育部重点实验室,陕西 西安 710054; 3.西安科技大学 安全科学与工程学院,陕西 西安 710054; 4.内蒙古伊泰煤炭股份有限公司,内蒙古 鄂尔多斯017000)
Author(s):
ZHAO Wei-guo1LI Jing-wen23ZHANG Xin-hai23LU Miao-miao23LIN Qing-song4ZHANG Jia-liang4
(1.Institute of Mining,Liaoning Technology University,Fuxin123000,China; 2.Key Laboratory of Western Mine Exploitation and Hazard Prevention,Ministry of Education,Xi'an University of Science and Technology,Xi'an 710054,China; 3.College of Safety Science and Engineering,Xi'an University of Science and Technology,Xi'an710054,China; 4.Inner Mongolia Yitai Coal Co.,Ltd.,Ordos 017000,China)
关键词:
热重实验 特征温度 热分析动力学 活化能
Keywords:
thermo-gravimetric experiments characteristic temperature thermal analysis kinetics activation energy
分类号:
TD 752.2
文献标志码:
A
摘要:
东荣矿区煤层自燃现象较为严重,煤的氧化动力学参数是反映煤自燃倾向性的重要指标,为防治东荣矿区煤层自燃,在不同升温速率条件下的基础上,应用热重分析实验,研究了东荣煤样升温氧化过程中质量变化的规律,同时结合15种气固反应机理函数,运用atava法对煤样进行动力学分析,确定了煤氧化机理函数,及活化能、指前因子及反应级数等动力学参数,并应用Ozawa法对得到的动力学参数结果进行了验证。实验表明:不同升温速率下煤样氧化自燃总反应历程相似,热分析曲线的变化规律相同,但随着升温速度的加大,曲线有向右平移的趋势。计算得到煤样高温剧烈氧化时的反应级数为1级,反应动力学模式为一级化学反应,其表观活化能为174.588 kJ/mol,指前因子为5.729×1010.
Abstract:
The spontaneous combustion of coal seam in Dongrong mining area is quite serious,and oxidation kinetics parameters of coal are important indicators to the tendency of spontaneous combustion of coal.In order to prevent and control spontaneous combustion of coal seam in Dongrong mining area,the law of mass change in the process of heating and oxidating of Dongrong coal sample was studied by thermogravimetric analysis experiment under different heating rate conditions.And with 15 kinds of gas-solid reaction mechanism functions and atava in mind,the kinetic analysis of coal samples was carried out,and the mechanism function of coal oxidation and the kinetic parameters such as activation energy,pre-exponential factor and reaction series were determined.The results of the kinetic parameters obtained were verified by Ozawa method.The experimental results indicate that the total reaction process of coal sample oxidation spontaneous combustion is similar under different heating rates,and the change rule of thermal analysis curve is the same,but with the increase of heating rate,the curve has the trend of moving to the right.It is calculated that the reaction order of coal sample is first order and the reaction kinetics model is first order chemical reaction.The apparent activation energy is 174.588 kJ/mol,and the pre-exponential factor is 5.729×1010.

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备注/Memo

备注/Memo:
收稿日期:2020-01-05 责任编辑:刘 洁
通信作者:赵维国(1964-),男,山东日照人,博士研究生,高级工程师,E-mail:823440349@qq.com
更新日期/Last Update: 2020-03-30