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首页> 外文学位 >Distributed Activation Energies Modeling of Athabasca Vacuum Residue Pyrolysis.
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Distributed Activation Energies Modeling of Athabasca Vacuum Residue Pyrolysis.

机译：阿萨巴斯卡减压渣油热解的分布式活化能模型。

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摘要

The kinetics of the thermal decomposition of Athabasca vacuum residue (AVR) has been studied by thermogravimetric analysis. Three heating rates of 0.5, 10 and 25 K/min were used to investigate the consistency of kinetic parameters. The Weibull and Gaussian distribution functions were found to be the best distribution functions for fitting the curve of differential of conversion with respect to time. The effect of pre-oxidation at low temperature with and without goethite alpha-FeO(OH) as a catalyst for oxidation was investigated in closed reactor. A three lump reaction network modeled the thermal cracking and the kinetics of AVR. Based on the obtained activation energies, it was found that goethite has a negligible effect as a catalyst during pre-oxidation. The difference among the calculated activation energies indicated that pre-oxidation resulted in the polymerization the vacuum residue molecules, The resulting pre-oxidized material was subsequently more resistant to thermal cracking than the unreacted feed.
机译：通过热重分析研究了阿萨巴斯卡减压渣油（AVR）的热分解动力学。分别以0.5、10和25 K / min的三种加热速率研究动力学参数的一致性。发现威布尔分布和高斯分布函数是最适合拟合转换微分随时间变化的曲线的最佳分布函数。在密闭反应器中研究了在有和没有针铁矿α-FeO​​（OH）作为氧化催化剂的情况下在低温下的预氧化效果。一个三块反应网络模拟了AVR的热裂解和动力学。基于获得的活化能，发现针铁矿在预氧化期间作为催化剂的作用可忽略不计。计算出的活化能之间的差异表明，预氧化导致聚合了真空残余物分子。与未反应的进料相比，所得的预氧化材料对热裂的耐受性更高。

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  • 作者

    Ghafelebashi Zarand, Sayid Mohammad.;

  • 作者单位

    University of Alberta (Canada).;

  • 授予单位 University of Alberta (Canada).;
  • 学科 Chemical engineering.
  • 学位 M.S.
  • 年度 2014
  • 页码 130 p.
  • 总页数 130
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 老年病学;
  • 关键词

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