Non-isothermal kinetics of styrene-butadiene-styrene asphalt combustion

doi:10.1088/1674-1056/22/6/068801

中国物理B ›› 2013, Vol. 22 ›› Issue (6): 68801-068801.doi: 10.1088/1674-1056/22/6/068801

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇下一篇

Non-isothermal kinetics of styrene-butadiene-styrene asphalt combustion

吴珂^a, 朱凯^a, 韩君^{a c}, 王金昌^a, 黄志义^a, 梁培^b

a Faculty of Engineering, Zhejiang University, Hangzhou 310027, China;
b College of Optical and Electronic Technology, China Jiliang University, Hangzhou 310018, China;
c Jiangsu Bao Li Asphalt Co. LTD, Wuxi 214422, China

收稿日期:2012-08-14 修回日期:2012-10-31 出版日期:2013-05-01 发布日期:2013-05-01
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 61154002 and 51078331), the China Postdoctoral Science Foundation (Grant No. 20090451471), and the Zhejiang Provincial Natural Science Foundation, China (Grant No. Z1110222).

Non-isothermal kinetics of styrene-butadiene-styrene asphalt combustion

Wu Ke (吴珂)^a, Zhu Kai (朱凯)^a, Han Jun (韩君)^{a c}, Wang Jin-Chang (王金昌)^a, Huang Zhi-Yi (黄志义)^a, Liang Pei (梁培)^b

a Faculty of Engineering, Zhejiang University, Hangzhou 310027, China;
b College of Optical and Electronic Technology, China Jiliang University, Hangzhou 310018, China;
c Jiangsu Bao Li Asphalt Co. LTD, Wuxi 214422, China

Received:2012-08-14 Revised:2012-10-31 Online:2013-05-01 Published:2013-05-01
Contact: Huang Zhi-Yi E-mail:hzy@zju.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 61154002 and 51078331), the China Postdoctoral Science Foundation (Grant No. 20090451471), and the Zhejiang Provincial Natural Science Foundation, China (Grant No. Z1110222).

摘要/Abstract

摘要： The combustion characteristics of styrene-butadiene-styrene (SBS) asphalt are studied by thermogravimetric analysis (TG/DTG) at four different heating rates. According to the saturates/aromatics/resins/asphaltenes (SARA) fractionation method, the combustion process of SBS asphalt can be divided by Gaussian peak fitting into three main stages: oil content release, resin pyrolysis, and asphaltene and char combustion. When the heating rate increases, the mass losses of the oil content and resin pyrolysis increase, and less asphaltenes are formed at a higher temperature. The activation energy values are calculated by the Coats-Redfern method to be in the range 61.6 kJ/mol-142.9 kJ/mol. The Popescu method is used for the kinetic analysis, and the result shows that the three stages of asphalt combustion can be explained by the sphere phase boundary reaction model, the second order chemical reaction model, nucleation, and its subsequent growth model, respectively.

关键词: SBS asphalt, combustion, non-isothermal kinetic, TG/DTG

Abstract: The combustion characteristics of styrene-butadiene-styrene (SBS) asphalt are studied by thermogravimetric analysis (TG/DTG) at four different heating rates. According to the saturates/aromatics/resins/asphaltenes (SARA) fractionation method, the combustion process of SBS asphalt can be divided by Gaussian peak fitting into three main stages: oil content release, resin pyrolysis, and asphaltene and char combustion. When the heating rate increases, the mass losses of the oil content and resin pyrolysis increase, and less asphaltenes are formed at a higher temperature. The activation energy values are calculated by the Coats-Redfern method to be in the range 61.6 kJ/mol-142.9 kJ/mol. The Popescu method is used for the kinetic analysis, and the result shows that the three stages of asphalt combustion can be explained by the sphere phase boundary reaction model, the second order chemical reaction model, nucleation, and its subsequent growth model, respectively.

Key words: SBS asphalt, combustion, non-isothermal kinetic, TG/DTG

中图分类号: (Combustion)

88.20.jj

88.05.Np (Environmental aspects) 88.05.De (Thermodynamic constraints on energy production)

吴珂, 朱凯, 韩君, 王金昌, 黄志义, 梁培. Non-isothermal kinetics of styrene-butadiene-styrene asphalt combustion[J]. 中国物理B, 2013, 22(6): 68801-068801.

Wu Ke (吴珂), Zhu Kai (朱凯), Han Jun (韩君), Wang Jin-Chang (王金昌), Huang Zhi-Yi (黄志义), Liang Pei (梁培). Non-isothermal kinetics of styrene-butadiene-styrene asphalt combustion[J]. Chin. Phys. B, 2013, 22(6): 68801-068801.

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Non-isothermal kinetics of styrene-butadiene-styrene asphalt combustion

Non-isothermal kinetics of styrene-butadiene-styrene asphalt combustion

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