...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Combustion and Flame >Combustion kinetics of asphalt binder components and the release processes of gaseous products
【24h】

Combustion kinetics of asphalt binder components and the release processes of gaseous products

机译：沥青结合料组分的燃烧动力学及气态产物的释放过程

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

To better understand thermal behaviors, combustion kinetic characteristics and dynamic releasing processes of gaseous products of four components separated from asphalt binder, thermogravimetry-Fourier transform infrared spectroscopy (TG-FTIR) tests were conducted on each component at different heating rates, and both differential and integral methods were utilized to discuss their combustion kinetics characteristics, respectively. Results indicate that combustion processes of four components include the volatilization of light components in stage 1 and the combustion of charring layer in stage 2. Main mass losses of saturates and aromatics occur in stage 1, but the mass loss percentages of resins and asphaltenes in the two stages are almost equal. Thermal stability of four components is successively increased from saturates to aromatics, resins and asphaltenes. Also, there is a lag of combustion process due to more incomplete decomposition of each component at a higher heating rate. Temperature range of each combustion stage is widened as the heating rate is raised. Thermal decompositions of resins and asphaltenes are less affected by the heating rate than those of saturates and aromatics. Additionally, activation energy in each component combustion stage is calculated and collated by differential and integral methods, which are suitable to discuss combustion kinetics characteristics of four components and evaluate their thermal stability. Finally, the release rate and amount of gaseous products are increased at a higher heating rate. Combustion properties of asphalt materials are further understood at the component level. (C) 2019 The Combustion Institute. Published by Elsevier Inc. All rights reserved.
机译：为了更好地了解从沥青胶结料中分离出的四种组分的气态产物的热行为，燃烧动力学特性和动态释放过程，在不同的加热速率下对每种组分进行了热重-傅立叶变换红外光谱（TG-FTIR）测试，分别进行了差示和利用积分法分别讨论了它们的燃烧动力学特性。结果表明，四种组分的燃烧过程包括阶段1中轻组分的挥发和阶段2中炭化层的燃烧。饱和物和芳烃的主要质量损失发生在阶段1中，而树脂和沥青质的质量损失百分比在阶段1中发生。两个阶段几乎相等。四种组分的热稳定性从饱和到芳族，树脂和沥青质依次提高。另外，由于在较高的加热速率下各组分的分解不完全，因此存在燃烧过程的滞后。随着加热速率的提高，每个燃烧阶段的温度范围变宽。树脂和沥青质的热分解受饱和度和芳族化合物的热分解的影响较小。此外，通过微分和积分方法计算并整理了每个部件燃烧阶段的活化能，这些方法适合讨论四个部件的燃烧动力学特性并评估其热稳定性。最后，在较高的加热速率下，释放速率和气态产物的量增加。沥青材料的燃烧性能在组分水平上得到了进一步的理解。 （C）2019燃烧研究所。由Elsevier Inc.出版。保留所有权利。

著录项

  • 来源
    《Combustion and Flame》 |2019年第8期|322-333|共12页
  • 作者

    Xia Wenjing; Xu Tao; Wang Hao; Pan Youqiang;

  • 作者单位

    Nanjing Forestry Univ Coll Civil Engn 159 Longpan Rd Nanjing 210037 Jiangsu Peoples R China;

    Rutgers State Univ Dept Civil & Environm Engn 96 Frelinghuysen Rd Piscataway NJ 08854 USA;

    Jiangsu Sinord Transportat Sci & Technol Co LTD 19 Lanhua Rd Nanjing 211805 Jiangsu Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Asphalt components; Thermal behaviors; Combustion kinetics; Gaseous products; Heating rate;

    机译：沥青成分;热行为;燃烧动力学;气态产品;加热速度;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号