SCI和EI收录∣中国化工学会会刊

中国化学工程学报 ›› 2019, Vol. 27 ›› Issue (7): 1618-1629.DOI: 10.1016/j.cjche.2018.11.019

• Separation Science and Engineering • 上一篇    下一篇

Characterization of multiphase gas-solid flow and accuracy of turbulence models for lower stage cyclones used in suspension preheaters

Marek Wasilewski1, Stanis?aw Anweiler2, Maciej Masiukiewicz2   

  1. 1 Faculty of Production Engineering and Logistics, Opole University of Technology, 76 Proszkowska St., 45-758 Opole, Poland;
    2 Faculty of Mechanical Engineering, Opole University of Technology, 76 Proszkowska St., 45-758 Opole, Poland
  • 收稿日期:2018-06-29 出版日期:2019-07-28 发布日期:2019-10-14
  • 通讯作者: Marek Wasilewski
  • 基金资助:
    This research was carried out with the support of the Interdisciplinary Centre for Mathematical and Computational Modelling (ICM) University of Warsaw under grant no G71-5.

Characterization of multiphase gas-solid flow and accuracy of turbulence models for lower stage cyclones used in suspension preheaters

Marek Wasilewski1, Stanis?aw Anweiler2, Maciej Masiukiewicz2   

  1. 1 Faculty of Production Engineering and Logistics, Opole University of Technology, 76 Proszkowska St., 45-758 Opole, Poland;
    2 Faculty of Mechanical Engineering, Opole University of Technology, 76 Proszkowska St., 45-758 Opole, Poland
  • Received:2018-06-29 Online:2019-07-28 Published:2019-10-14
  • Contact: Marek Wasilewski
  • Supported by:
    This research was carried out with the support of the Interdisciplinary Centre for Mathematical and Computational Modelling (ICM) University of Warsaw under grant no G71-5.

摘要: This study involved the analysis and characterization of the multiphase flow phenomenon inside the lower stage cyclone separator used in the clinker burning process. The analysis was performed using both CFD and experimental research methods. Very few studies are devoted to such types of cyclone separators, which in addition to their basic functions are also responsible for the technological process. Due to the atypical working conditions of these cyclone separators, they are characterized with a complex geometry, which significantly differs from that of the traditional separators.
Furthermore, the evaluation of the accuracy and level of reliability of the two models of turbulence closure-k-ε RNG and RSM (RANS), and the LES. The results obtained led to the conclusion that for the lower stage cyclone separators, the LES model proved to be the most accurate (both in the case of forecasting the separation efficiency and pressure drop). The performance parameter (in particular the separation efficiency) values obtained for the RSM model were also characterized by high accuracy. The k-ε RNG model was characterized by significantly larger deviations.

关键词: Cyclone separators, Separation, Multiphase flow, CFD, Pressure drop, Clinker burning

Abstract: This study involved the analysis and characterization of the multiphase flow phenomenon inside the lower stage cyclone separator used in the clinker burning process. The analysis was performed using both CFD and experimental research methods. Very few studies are devoted to such types of cyclone separators, which in addition to their basic functions are also responsible for the technological process. Due to the atypical working conditions of these cyclone separators, they are characterized with a complex geometry, which significantly differs from that of the traditional separators.
Furthermore, the evaluation of the accuracy and level of reliability of the two models of turbulence closure-k-ε RNG and RSM (RANS), and the LES. The results obtained led to the conclusion that for the lower stage cyclone separators, the LES model proved to be the most accurate (both in the case of forecasting the separation efficiency and pressure drop). The performance parameter (in particular the separation efficiency) values obtained for the RSM model were also characterized by high accuracy. The k-ε RNG model was characterized by significantly larger deviations.

Key words: Cyclone separators, Separation, Multiphase flow, CFD, Pressure drop, Clinker burning