...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Heat Transfer Engineering >Thermal Fouling of Heat Exchanger Tubes due to Heavy Hydrocarbon Droplets Impingement
【24h】

Thermal Fouling of Heat Exchanger Tubes due to Heavy Hydrocarbon Droplets Impingement

机译：重型烃滴撞击导致换热器管热结垢

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

This work discusses fouling in the vapor-steam mixture overheater in the convection section of an industrial steam cracker due to the thermal degradation of heavy hydrocarbon droplets deposited on the tube wall. A spray of heavy hydrocarbon multicomponent droplets is injected in a tube of the vapor-steam mixture overheater and the path of the droplets through the tube is followed by an Eulerian-Lagrangian computational fluid dynamics simulation. To study tube fouling, the droplet impingement behavior on the wall, the evaporation of the deposited liquid, and a coking model describing thermal coke formation due to degradation of heavy hydrocarbons are required. To describe the droplet impingement behavior, a regime map for single component millimeter-sized droplets is taken from the literature. Two simulations are performed to study fouling problems in a vapor-mixture overheater tube. Simulation results are found to be grid sensitive. By analyzing and comparing simulation results it is concluded that reliable fouling data require a regime map for the impingement of multicomponent heavy hydrocarbon micron-sized droplets.
机译：这项工作讨论了由于沉积在管壁上的重质烃液滴的热降解而导致的工业蒸汽裂解装置对流段中蒸汽-蒸汽混合物过热器的结垢。重质烃多组分液滴的喷雾被注入到蒸汽-蒸汽混合物过热器的管中，液滴通过该管的路径随后是欧拉-拉格朗日计算流体动力学模拟。为了研究管的结垢，需要液滴在壁上的撞击行为，沉积液体的蒸发以及描述由于重烃降解而形成热焦炭的焦化模型。为了描述液滴的撞击行为，从文献中获取了单组分毫米大小液滴的状态图。进行了两个模拟，以研究蒸汽混合物过热器管中的结垢问题。发现仿真结果对网格敏感。通过分析和比较模拟结果，可以得出结论，可靠的结垢数据需要撞击多组分重烃微米级液滴的状态图。

著录项

  • 来源
    《Heat Transfer Engineering》 |2017年第8期|712-720|共9页
  • 作者

    Pieter Verhees; Amit V. Mahulkar; Kevin M. Van Geem; Geraldine J. Heynderickx;

  • 作者单位

    Laboratory for Chemical Technology, Ghent University, Ghent, Belgium;

    Laboratory for Chemical Technology, Ghent University, Ghent, Belgium;

    Laboratory for Chemical Technology, Ghent University, Ghent, Belgium;

    Laboratory for Chemical Technology, Ghent University, Ghent, Belgium;

  • 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

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