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A reduced reaction mechanism for the simulation in ethylene flare combustion

机译:乙烯火炬燃烧模拟的简化反应机理

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摘要

Industrial ethylene flares are considered to be a probable major source of volatile organic compounds (VOCs) such as formaldehyde. VOCs are chemicals that are responsible for the formation of other atmospheric pollutants like ozone. Due to the difficulty and cost of field measurements, on-line monitoring is not practical and other methods must be employed. Current methodologies for calculating speciated and total VOC emissions from flaring activities generally apply a simple mass reduction to the VOC species sent to the flare that does not consider the production of incomplete combustion or other intermediates. There arises a need of a speciation study for the inspection of these flare for their emission. However, most of the detailed kinetic mechanisms for the speciation study of flaring events are too complex, consist of large number of reactions and species, and also are computationally expensive. A reduced mechanism will thus be desirable for improving computational efficiency. In this study, a reduced mechanism for simulating ethylene flare combustion is presented. By retaining the important features of the detailed mechanism in the form of elementary reactions, and satisfying the species constraint of commercial CFD packages, the reduced mechanism, thereby, is useful for speciation study of flaring event.
机译:工业乙烯火炬被认为是挥发性有机化合物(VOC)(例如甲醛)的可能主要来源。 VOC是负责形成其他大气污染物(如臭氧)的化学物质。由于现场测量的困难和成本,在线监测是不实际的,必须采用其他方法。当前用于计算燃烧活动中特定和总VOC排放量的方法通常将简单的质量减少应用于发往火炬的VOC种类,而这种燃烧不考虑不完全燃烧或其他中间产物的产生。需要对这些火炬的排放进行形态学研究。然而,用于燃烧事件的形态研究的大多数详细动力学机理太复杂,由大量反应和物种组成,并且在计算上也很昂贵。因此,需要一种简化的机制来提高计算效率。在这项研究中,提出了一种模拟乙烯火炬燃烧的简化机理。通过保留基本反应形式的详细机理的重要特征,并满足商品CFD包装的种类限制,简化后的机理可用于燃烧事件的形态研究。

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  • 来源
    《Clean technologies and environmental policy》 |2012年第2期|p.229-239|共11页
  • 作者单位

    Dan F. Smith Department of Chemical Engineering, Lamar University, Beaumont, TX 77710, USA;

    Department of Chemistry and Physics, Lamar University, Beaumont, TX 77710, USA;

    Dan F. Smith Department of Chemical Engineering, Lamar University, Beaumont, TX 77710, USA;

    Department of Mechanical Engineering, Lamar University,Beaumont, TX 77710, USA;

    Dan F. Smith Department of Chemical Engineering, Lamar University, Beaumont, TX 77710, USA;

    Dan F. Smith Department of Chemical Engineering, Lamar University, Beaumont, TX 77710, USA;

    Dan F. Smith Department of Chemical Engineering, Lamar University, Beaumont, TX 77710, USA;

    Dan F. Smith Department of Chemical Engineering, Lamar University, Beaumont, TX 77710, USA;

    Dan F. Smith Department of Chemical Engineering, Lamar University, Beaumont, TX 77710, USA;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    combustion; reduced mechanism; ethylene flare;

    机译:燃烧;简化机制;乙烯火炬;

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