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Frontal stability of reactive nanoparticle transport during in situ catalytic upgrading of heavy oil

机译：稠油原位催化提质过程中反应性纳米颗粒传输的前沿稳定性

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摘要

The application of nanoparticles as a catalyst in porous media has recently been increased and is generally relevant to applications that include in situ heavy oil upgrading and removal of reactive and non-reactive pollutants in groundwater. The objective of this paper is investigation of the effects of reactive nano-catalysts on viscous fingering instability. In order to understand the behaviour of frontal instabilities during transport of reactive nanoparticles, the basic equations of conservation of mass and momentum are linearized and solved numerically. The analysis reveals that increasing the reaction rate promotes the viscous fingering instability around an interface delivering nano-catalysts, while increasing the nano-catalysts deposition rate usually stabilizes the displacement front. It is also shown that accumulation of nano-catalysts behind the front can destabilize the reactive front. The effects of the interface sharpness, nanoparticles diffusion coefficient, permeability of porous media, and viscosity ratios of different phases are also discussed.
机译：纳米颗粒作为催化剂在多孔介质中的应用最近已经增加，并且通常与包括就地重油提质以及去除地下水中的反应性和非反应性污染物的应用有关。本文的目的是研究反应性纳米催化剂对粘性指法不稳定性的影响。为了了解在反应性纳米粒子传输过程中额面不稳定性的行为，将质量和动量守恒的基本方程式线性化并进行了数值求解。分析显示，增加反应速率会促进输送纳米催化剂的界面周围的粘性指状不稳定性，而增加纳米催化剂的沉积速率通常会稳定置换前沿。还显示出纳米催化剂在前端后面的积累会破坏反应前端的稳定性。还讨论了界面清晰度，纳米颗粒扩散系数，多孔介质的渗透性以及不同相的粘度比的影响。

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  • 来源
    《Fuel》 |2013年第5期|525-538|共14页
  • 作者

    Karim Ghesmat; Hassan Hassanzadeh; Jalal Abedi; Zhangxin Chen;

  • 作者单位

    Department of Chemical and Petroleum Engineering, Schulich School of Engineering, University of Calgary, Calgary, AB, Canada T2N 1N4;

    Department of Chemical and Petroleum Engineering, Schulich School of Engineering, University of Calgary, Calgary, AB, Canada T2N 1N4;

    Department of Chemical and Petroleum Engineering, Schulich School of Engineering, University of Calgary, Calgary, AB, Canada T2N 1N4;

    Department of Chemical and Petroleum Engineering, Schulich School of Engineering, University of Calgary, Calgary, AB, Canada T2N 1N4;

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

    nanoparticles; instability; porous media; heavy oil upgrading; miscible flow;

    机译：纳米粒子不稳定多孔介质重油升级;混流;

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