|本期目录/Table of Contents|

[1]贾海林,杜志峰,王健,等.煤氧化-热解进程的增失重阶段与动力学三因子分析[J].中国安全生产科学技术,2015,11(8):112-118.[doi:10.11731/j.issn.1673-193x.2015.08.019]
 JIA Hai-lin,DU Zhi-feng,WANG Jian,et al.Analysis on the weight increment and weight loss stage and the kinetic triplet during the oxidation-pyrolysis process of coal[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2015,11(8):112-118.[doi:10.11731/j.issn.1673-193x.2015.08.019]
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煤氧化-热解进程的增失重阶段与动力学三因子分析
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
11
期数:
2015年8期
页码:
112-118
栏目:
职业安全卫生管理与技术
出版日期:
2015-08-30

文章信息/Info

Title:
Analysis on the weight increment and weight loss stage and the kinetic triplet during the oxidation-pyrolysis process of coal
作者:
贾海林1杜志峰2王健1解俊杰1
(1. 河南理工大学 安全科学与工程学院,河南 焦作454000; 2. 山西焦煤集团山西华晋吉宁煤业有限责任公司 吉宁煤矿, 山西 临汾042100)
Author(s):
JIA Hai-lin1 DU Zhi-feng2 WANG Jian1 JIE Jun-jie1
(1. School of Safety Science and Engineering, Henan Polytechnic University, Jiaozuo Henan 454000, China; 2. Jining Coal Mine, Jining Coal Industry Co., Ltd of Shanxi Coking Coal Group, Linfen Shanxi 042100, China)
关键词:
氧化-热解进程增失重阶段Popescu法反应机理函数动力学参数
Keywords:
oxidation-pyrolysis process weight increment and weight loss stage Popescu method reaction mechanism function kinetic parameters
分类号:
X936
DOI:
10.11731/j.issn.1673-193x.2015.08.019
文献标志码:
A
摘要:
为分析煤氧化-热解进程的增失重阶段与动力学三因子,根据同一氧体积分数、5种不同升温速率下煤氧化-热解的TG-DTG曲线,探讨了煤氧化-热解进程经历的增失重阶段,基于Popescu法计算了不同阶段的动力学三因子。结果表明实验煤样的氧化-热解进程可分为失水失重、氧化增重、燃烧失重和燃尽恒重4个阶段。失水失重、氧化增重和燃烧失重阶段的反应机理分别为Mample单行法则、三维扩散模型和相边界反应的收缩球体模型;活化能分别为54.128 kJ·mol-1、152.252 kJ·mol-1和134.458 kJ·mol-1;指前因子的自然对数分别为16.832 s-1、32.597 s-1和18.365 s-1。
Abstract:
In order to analysis the weight increment and weight loss stage and the kinetic triplet during the oxidation-pyrolysis process of coal, based on the TG-DTG curves of coal oxidation-pyrolysis under the same oxygen volume fraction and five different heating rates, the weight increment and weight loss stage in the oxidation-pyrolysis process of coal was studied, and the kinetic triplet were calculated by the Popescu method. The result showed that the oxidation-pyrolysis process of coal sample can be separated into four stages which are respectively the weight loss stage by water loss, the weight increment stage by oxidation, the weight loss stage by combustion and the constant weight stage after burnout. The reaction mechanisms of the first three stages are respectively the single line law of Mample, the three dimensional diffusion model and the shrink sphere model of phase boundary reaction. The activation energies are respectively 54.128 kJ·mol-1, 152.252 kJ·mol-1 and 134.458 kJ·mol-1, and the natural logarithm of the pre-exponential factors are respectively 16.832 s-1, 32.597 s-1 and 18.365 s-1.

参考文献/References:

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备注/Memo

备注/Memo:
国家自然科学基金项目(U1361205,51304069);河南省基础与前沿技术研究计划项目(082300463205)
更新日期/Last Update: 2015-09-06