<abstract xmlns="http://www.w3.org/1999/xhtml"><p>A multiscale model for simulating the hydrodynamic behavior of catalytic bale packings has been proposed. This model combines computational fluid dynamics (CFD) and macroscopic calculation. At small scale calculation, the CFD model includes 3-D volume-of-fluid (VOF) simulation within representative elementary unit (REU) under unsteady-state conditions. The REU constitutes gauze and catalyst domain, and porous media model is applied. At large scale calculation, a new mechanistic model deduced from the unit network model is employed. Based on liquid split proportion from small scale calculation, liquid distribution of the entire bale packing can be predicted. To evaluate different packing design, three common bale arrangements, i.e. one-bale, nine-bales and seven-bales, are compared. The area-weighted Christiansen uniformity coefficient is introduced to assess the distribution performance. A comparison between simulation and experimental results is made to validate the multiscale model. The present methodology is proved to be effective to analysis and design of catalytic distillation columns.</p></abstract>

A multiscale model for simulating the hydrodynamic behavior of catalytic bale packings has been proposed. This model combines computational fluid dynamics (CFD) and macroscopic calculation. At small scale calculation, the CFD model includes 3-D volume-of-fluid (VOF) simulation within representative elementary unit (REU) under unsteady-state conditions. The REU constitutes gauze and catalyst domain, and porous media model is applied. At large scale calculation, a new mechanistic model deduced from the unit network model is employed. Based on liquid split proportion from small scale calculation, liquid distribution of the entire bale packing can be predicted. To evaluate different packing design, three common bale arrangements, i.e. one-bale, nine-bales and seven-bales, are compared. The area-weighted Christiansen uniformity coefficient is introduced to assess the distribution performance. A comparison between simulation and experimental results is made to validate the multiscale model. The present methodology is proved to be effective to analysis and design of catalytic distillation columns.

A multiscale methodology for CFD simulation of catalytic distillation bale packings

Research Institute of Petroleum Processing, SINOPEC, Beijing 100083, China

Tianjin University, School of Chemical Engineering and Technology, Tianjin 300072, China

Tianjin University, State Key Laboratory of Chemical Engineering, Tianjin 300072, China

Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China

Polish Journal of Chemical Technology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

A multiscale model for simulating the hydrodynamic behavior of catalytic bale packings has been proposed. This model combines computational fluid dynamics...

A multiscale methodology for CFD simulation of catalytic distillation bale packings

Online veröffentlicht: 04. Apr. 2016

Seitenbereich: 24 - 32

DOI: https://doi.org/10.1515/pjct-2016-0005

Schlüsselwörter
multiscale model, CFD, reactive distillation

© 2016 Huidian Ding et al., published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

A multiscale methodology for CFD simulation of catalytic distillation bale packings

Online veröffentlicht: 04. Apr. 2016

Seitenbereich: 24 - 32

DOI: https://doi.org/10.1515/pjct-2016-0005

Schlüsselwörtermultiscale model, CFD, reactive distillation

© 2016 Huidian Ding et al., published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Schlüsselwörter
multiscale model, CFD, reactive distillation