[1]赵洁雯,黄晓明,李晓东.基于热重质谱联用的沥青质燃烧特性分析[J].东南大学学报(自然科学版),2014,44(1):178-182.[doi:10.3969/j.issn.1001-0505.2014.01.032]
 Zhao Jiewen,Huang Xiaoming,Li Xiaodong.Analysis on combustion mechanism of asphaltene using TG-MS technique[J].Journal of Southeast University (Natural Science Edition),2014,44(1):178-182.[doi:10.3969/j.issn.1001-0505.2014.01.032]
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基于热重质谱联用的沥青质燃烧特性分析()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
44
期数:
2014年第1期
页码:
178-182
栏目:
交通运输工程
出版日期:
2014-01-18

文章信息/Info

Title:
Analysis on combustion mechanism of asphaltene using TG-MS technique
作者:
赵洁雯1黄晓明12李晓东1
1东南大学交通学院, 南京 210096; 2西南交通大学道路工程四川省重点实验室, 成都 611756
Author(s):
Zhao Jiewen1 Huang Xiaoming12 Li Xiaodong1
1School of Transportation, Southeast University, Nanjing 210096, China
2Key Labratory of Sichuan Province Highway Engineering, Southwest Jiaotong Unirersity, Chengdu 611756, China
关键词:
热重 质谱 沥青质 燃烧
Keywords:
thermo gravimetric mass spectrometer asphaltene combustion
分类号:
U414
DOI:
10.3969/j.issn.1001-0505.2014.01.032
摘要:
为了分析沥青质的燃烧特性,利用热重质谱联用技术模拟了沥青质在空气环境中的燃烧.分别采用Coats-Redfern积分法和分布活化能模型计算了沥青质不同阶段的活化能,其中Coats-Redfern积分法将沥青质的燃烧过程分为2个阶段,其活化能分别为221.33和147.07 kJ/mol.采用分布活化能模型计算了转化率为0.1~0.9的9个活化能,活化能从210.49 kJ/mol逐渐降低至42.98kJ/mol.根据质谱图,确定了各个时刻逸出气体的种类和产量.2种活化能计算方法分别验证了沥青质燃烧过程中活化能逐渐降低,说明在燃烧过程中随着反应的进行,燃烧逐渐变得更容易发生.由质谱图与沥青质的热失重速率曲线比较可知,热失重速率峰值处气体逸出量最多.
Abstract:
To analyze the combustion mechanism of asphaltene, thermo gravimetric analyzer coupled with a mass spectrometer(MS)technique was used in a mixed gas environment of simulated air. The Coats-Redfern model and the distributed activation energy model(DAEM)were used to calculate the activation energy. The process of asphaltene combustion was divided into two stages by the Coats-Redfern model, with the activation energies being 221.33 and 147.07 kJ/mol, respectively. By the DAEM, nine activation energies from 210.49 to 42.98 kJ/mol were calculated when the conversion rate changed from 0.1 to 0.9. According to the MS pictures, the types and magnitudes of the gaseous products during asphaltene combustion at each time were identified. The results show that with the combustion processing, the activation energy is decreasing which means the combustion reaction becomes easier to happen. Compared with the derivative thermogravimetric curve and MS pictures, the maximum volume of gas released occurred at the peak points of the derivative thermogravimetric curve.

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备注/Memo

备注/Memo:
收稿日期: 2013-06-17.
作者简介: 赵洁雯(1982— ),女,博士生;黄晓明(联系人),男,博士,教授,博士生导师,huangxm@seu.edu.cn.
基金项目: 国家自然科学基金资助项目(51178112)、西南交通大学道路工程四川省重点实验室开放研究基金资助项目(LHTE002201102).
引用本文: 赵洁雯,黄晓明,李晓东.基于热重质谱联用的沥青质燃烧特性分析[J].东南大学学报:自然科学版,2014,44(1):178-182. [doi:10.3969/j.issn.1001-0505.2014.01.032]
更新日期/Last Update: 2014-01-20