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Title: Experimental study and discrete element method simulation of Geldart Group A particles in a small-scale fluidized bed

Abstract

Geldart Group A particles are of great importance in various chemical processes because of advantages such as ease of fluidization, large surface area, and many other unique properties. It is very challenging to model the fluidization behavior of such particles as widely reported in the literature. In this study, a pseudo-2D experimental column with a width of 5 cm, a height of 45 cm, and a depth of 0.32 cm was developed for detailed measurements of fluidized bed hydrodynamics of fine particles to facilitate the validation of computational fluid dynamic (CFD) modeling. The hydrodynamics of sieved FCC particles (Sauter mean diameter of 148 µm and density of 1300 kg/m3) and NETL-32D sorbents (Sauter mean diameter of 100 µm and density of 480 kg/m3) were investigated mainly through the visualization by a high-speed camera. Numerical simulations were then conducted by using NETL’s open source code MFIX-DEM. Both qualitative and quantitative information including bed expansion, bubble characteristics, and solid movement were compared between the numerical simulations and the experimental measurement. Furthermore, the cohesive van der Waals force was incorporated in the MFIX-DEM simulations and its influences on the flow hydrodynamics were studied.

Authors:
 [1];  [2];  [2];  [3];  [2];  [2];  [2];  [3];  [4];  [5];  [4]
  1. National Energy Technology Lab. (NETL), Morgantown, WV (United States); AECOM, Morgantown, WV (United States)
  2. National Energy Technology Lab. (NETL), Morgantown, WV (United States)
  3. National Energy Technology Lab. (NETL), Morgantown, WV (United States); West Virginia Univ. Research Corp., Morgantown, WV (United States)
  4. National Energy Technology Lab. (NETL), Morgantown, WV (United States); REM Engineering Services, Morgantown, WV (United States)
  5. National Energy Technology Lab. (NETL), Morgantown, WV (United States); West Virginia Univ., Morgantown, WV (United States)
Publication Date:
Research Org.:
National Energy Technology Lab. (NETL), Morgantown, WV (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1439972
Alternate Identifier(s):
OSTI ID: 1495824
Grant/Contract Number:  
[FE0004000]
Resource Type:
Accepted Manuscript
Journal Name:
Advanced Powder Technology
Additional Journal Information:
[ Journal Volume: 28; Journal Issue: 11]; Journal ID: ISSN 0921-8831
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; Discrete element method; Fluidized bed; Group A particles; Bed expansion; Cohesive force; High-speed image

Citation Formats

Li, Tingwen, Rabha, Swapna, Verma, Vikrant, Dietiker, Jean -Francois, Xu, Yupeng, Lu, Liqiang, Rogers, William, Gopalan, Balaji, Breault, Greggory, Tucker, Jonathan, and Panday, Rupen. Experimental study and discrete element method simulation of Geldart Group A particles in a small-scale fluidized bed. United States: N. p., 2017. Web. doi:10.1016/j.apt.2017.09.003.
Li, Tingwen, Rabha, Swapna, Verma, Vikrant, Dietiker, Jean -Francois, Xu, Yupeng, Lu, Liqiang, Rogers, William, Gopalan, Balaji, Breault, Greggory, Tucker, Jonathan, & Panday, Rupen. Experimental study and discrete element method simulation of Geldart Group A particles in a small-scale fluidized bed. United States. doi:10.1016/j.apt.2017.09.003.
Li, Tingwen, Rabha, Swapna, Verma, Vikrant, Dietiker, Jean -Francois, Xu, Yupeng, Lu, Liqiang, Rogers, William, Gopalan, Balaji, Breault, Greggory, Tucker, Jonathan, and Panday, Rupen. Tue . "Experimental study and discrete element method simulation of Geldart Group A particles in a small-scale fluidized bed". United States. doi:10.1016/j.apt.2017.09.003. https://www.osti.gov/servlets/purl/1439972.
@article{osti_1439972,
title = {Experimental study and discrete element method simulation of Geldart Group A particles in a small-scale fluidized bed},
author = {Li, Tingwen and Rabha, Swapna and Verma, Vikrant and Dietiker, Jean -Francois and Xu, Yupeng and Lu, Liqiang and Rogers, William and Gopalan, Balaji and Breault, Greggory and Tucker, Jonathan and Panday, Rupen},
abstractNote = {Geldart Group A particles are of great importance in various chemical processes because of advantages such as ease of fluidization, large surface area, and many other unique properties. It is very challenging to model the fluidization behavior of such particles as widely reported in the literature. In this study, a pseudo-2D experimental column with a width of 5 cm, a height of 45 cm, and a depth of 0.32 cm was developed for detailed measurements of fluidized bed hydrodynamics of fine particles to facilitate the validation of computational fluid dynamic (CFD) modeling. The hydrodynamics of sieved FCC particles (Sauter mean diameter of 148 µm and density of 1300 kg/m3) and NETL-32D sorbents (Sauter mean diameter of 100 µm and density of 480 kg/m3) were investigated mainly through the visualization by a high-speed camera. Numerical simulations were then conducted by using NETL’s open source code MFIX-DEM. Both qualitative and quantitative information including bed expansion, bubble characteristics, and solid movement were compared between the numerical simulations and the experimental measurement. Furthermore, the cohesive van der Waals force was incorporated in the MFIX-DEM simulations and its influences on the flow hydrodynamics were studied.},
doi = {10.1016/j.apt.2017.09.003},
journal = {Advanced Powder Technology},
number = [11],
volume = [28],
place = {United States},
year = {2017},
month = {9}
}

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