Comparison between the new mechanistic and the chaos scale-up methods for gas-solid fluidized beds

doi:10.1016/j.cjche.2018.03.022

Chinese Journal of Chemical Engineering ›› 2018, Vol. 26 ›› Issue (6): 1401-1411.DOI: 10.1016/j.cjche.2018.03.022

• General reactor • 上一篇下一篇

Comparison between the new mechanistic and the chaos scale-up methods for gas-solid fluidized beds

Haidar Taofeeq^1,2,4, Muthanna Al-Dahhan^1,3

1 Multiphase Reactors Engineering and Applications Laboratory(mReal), Department of Chemical & Biochemical Engineering, Missouri University of Science & Technology, Rolla, MO 65409, USA;
2 Chemical Engineering Department, College of Engineering, Al-Nahrain University, Baghdad, Iraq;
3 Cihan University, Erbil, Iraq;
4 Prosthetics and Orthotics Engineering Department, College of Engineering, Al-Nahrain University, Baghdad, Iraq

收稿日期:2017-10-26 修回日期:2018-02-26 出版日期:2018-06-28 发布日期:2018-08-03
通讯作者: Muthanna Al-Dahhan,E-mail address:aldahhanm@mst.edu

Comparison between the new mechanistic and the chaos scale-up methods for gas-solid fluidized beds

Haidar Taofeeq^1,2,4, Muthanna Al-Dahhan^1,3

1 Multiphase Reactors Engineering and Applications Laboratory(mReal), Department of Chemical & Biochemical Engineering, Missouri University of Science & Technology, Rolla, MO 65409, USA;
2 Chemical Engineering Department, College of Engineering, Al-Nahrain University, Baghdad, Iraq;
3 Cihan University, Erbil, Iraq;
4 Prosthetics and Orthotics Engineering Department, College of Engineering, Al-Nahrain University, Baghdad, Iraq

Received:2017-10-26 Revised:2018-02-26 Online:2018-06-28 Published:2018-08-03
Contact: Muthanna Al-Dahhan,E-mail address:aldahhanm@mst.edu

摘要/Abstract

摘要： The chaotic scale-up approach by matching the Kolmogorov entropy (E_K) proposed by Schouten et al. (1996) was assessed in two geometrically similar gas-solid fluidized bed columns of 0.14 and 0.44 m diameter. We used four conditions of our validated new mechanistic scale-up method based on matching the radial profiles of gas holdup where the local dimensionless hydrodynamic parameters were similar as measured by advanced measurement techniques. These experimental conditions were used to evaluate the validity of the chaotic scale-up method, which were selected based on our new mechanistic scale-up methodology. Pressure gauge transducer measurements at the wall and inside the bed at various local radial locations and at three axial heights were used to estimate KE. It was found that the experimental conditions with similar or close radial profiles of the Kolmogorov entropy and with similar or close radial profiles of the gas holdup achieve the similarity in local dimensionless hydrodynamic parameters, and vice versa.

关键词: Scale-up, Chaotic analysis approach, New scale-up methodology, Kolmogorov entropy, Gas-solid fluidized bed

Abstract: The chaotic scale-up approach by matching the Kolmogorov entropy (E_K) proposed by Schouten et al. (1996) was assessed in two geometrically similar gas-solid fluidized bed columns of 0.14 and 0.44 m diameter. We used four conditions of our validated new mechanistic scale-up method based on matching the radial profiles of gas holdup where the local dimensionless hydrodynamic parameters were similar as measured by advanced measurement techniques. These experimental conditions were used to evaluate the validity of the chaotic scale-up method, which were selected based on our new mechanistic scale-up methodology. Pressure gauge transducer measurements at the wall and inside the bed at various local radial locations and at three axial heights were used to estimate KE. It was found that the experimental conditions with similar or close radial profiles of the Kolmogorov entropy and with similar or close radial profiles of the gas holdup achieve the similarity in local dimensionless hydrodynamic parameters, and vice versa.

Key words: Scale-up, Chaotic analysis approach, New scale-up methodology, Kolmogorov entropy, Gas-solid fluidized bed

Haidar Taofeeq, Muthanna Al-Dahhan. Comparison between the new mechanistic and the chaos scale-up methods for gas-solid fluidized beds[J]. Chinese Journal of Chemical Engineering, 2018, 26(6): 1401-1411.

Haidar Taofeeq, Muthanna Al-Dahhan. Comparison between the new mechanistic and the chaos scale-up methods for gas-solid fluidized beds[J]. Chin.J.Chem.Eng., 2018, 26(6): 1401-1411.

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Comparison between the new mechanistic and the chaos scale-up methods for gas-solid fluidized beds

Comparison between the new mechanistic and the chaos scale-up methods for gas-solid fluidized beds

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