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Title: Investigation of CO2 capture using solid sorbents in a fluidized bed reactor: Cold flow hydrodynamics

Abstract

Both experimental tests and numerical simulations were conducted to investigate the fluidization behavior of a solid CO2 sorbent with a mean diameter of 100 μm and density of about 480 kg/m, which belongs to Geldart's Group A powder. A carefully designed fluidized bed facility was used to perform a series of experimental tests to study the flow hydrodynamics. Numerical simulations using the two-fluid model indicated that the grid resolution has a significant impact on the bed expansion and bubbling flow behavior. Due to the limited computational resource, no good grid independent results were achieved using the standard models as far as the bed expansion is concerned. In addition, all simulations tended to under-predict the bubble size substantially. Effects of various model settings including both numerical and physical parameters have been investigated with no significant improvement observed. The latest filtered sub-grid drag model was then tested in the numerical simulations. Compared to the standard drag model, the filtered drag model with two markers not only predicted reasonable bed expansion but also yielded realistic bubbling behavior. As a result, a grid sensitivity study was conducted for the filtered sub-grid model and its applicability and limitation were discussed.

Authors:
ORCiD logo [1];  [2];  [3];  [4];  [2]; ORCiD logo [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); West Virginia Univ., Morgantown, WV (United States)
  3. National Energy Technology Lab. (NETL), Morgantown, WV (United States)
  4. National Energy Technology Lab. (NETL), Morgantown, WV (United States); REM Engineering Services, Morgantown, WV (United States)
Publication Date:
Research Org.:
National Energy Technology Lab. (NETL), Morgantown, WV (United States)
Sponsoring Org.:
USDOE; USDOE Office of Fossil Energy and Carbon Management (FECM)
OSTI Identifier:
1366435
Alternate Identifier(s):
OSTI ID: 1406932
Report Number(s):
CONTR-PUB-267
Journal ID: ISSN 0032-5910; PII: S003259101630448X
Grant/Contract Number:  
FE0004000
Resource Type:
Accepted Manuscript
Journal Name:
Powder Technology
Additional Journal Information:
Journal Volume: 301; Journal Issue: C; Journal ID: ISSN 0032-5910
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
97 MATHEMATICS AND COMPUTING; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; computational fluid dynamics; fluidized bed; two fluid model; fine particles; flow hydrodynamics

Citation Formats

Li, Tingwen, Dietiker, Jean -Francois, Rogers, William, Panday, Rupen, Gopalan, Balaji, and Breault, Greggory. Investigation of CO2 capture using solid sorbents in a fluidized bed reactor: Cold flow hydrodynamics. United States: N. p., 2016. Web. doi:10.1016/j.powtec.2016.07.056.
Li, Tingwen, Dietiker, Jean -Francois, Rogers, William, Panday, Rupen, Gopalan, Balaji, & Breault, Greggory. Investigation of CO2 capture using solid sorbents in a fluidized bed reactor: Cold flow hydrodynamics. United States. https://doi.org/10.1016/j.powtec.2016.07.056
Li, Tingwen, Dietiker, Jean -Francois, Rogers, William, Panday, Rupen, Gopalan, Balaji, and Breault, Greggory. Fri . "Investigation of CO2 capture using solid sorbents in a fluidized bed reactor: Cold flow hydrodynamics". United States. https://doi.org/10.1016/j.powtec.2016.07.056. https://www.osti.gov/servlets/purl/1366435.
@article{osti_1366435,
title = {Investigation of CO2 capture using solid sorbents in a fluidized bed reactor: Cold flow hydrodynamics},
author = {Li, Tingwen and Dietiker, Jean -Francois and Rogers, William and Panday, Rupen and Gopalan, Balaji and Breault, Greggory},
abstractNote = {Both experimental tests and numerical simulations were conducted to investigate the fluidization behavior of a solid CO2 sorbent with a mean diameter of 100 μm and density of about 480 kg/m, which belongs to Geldart's Group A powder. A carefully designed fluidized bed facility was used to perform a series of experimental tests to study the flow hydrodynamics. Numerical simulations using the two-fluid model indicated that the grid resolution has a significant impact on the bed expansion and bubbling flow behavior. Due to the limited computational resource, no good grid independent results were achieved using the standard models as far as the bed expansion is concerned. In addition, all simulations tended to under-predict the bubble size substantially. Effects of various model settings including both numerical and physical parameters have been investigated with no significant improvement observed. The latest filtered sub-grid drag model was then tested in the numerical simulations. Compared to the standard drag model, the filtered drag model with two markers not only predicted reasonable bed expansion but also yielded realistic bubbling behavior. As a result, a grid sensitivity study was conducted for the filtered sub-grid model and its applicability and limitation were discussed.},
doi = {10.1016/j.powtec.2016.07.056},
journal = {Powder Technology},
number = C,
volume = 301,
place = {United States},
year = {Fri Jul 29 00:00:00 EDT 2016},
month = {Fri Jul 29 00:00:00 EDT 2016}
}

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Cited by: 15 works
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