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Title: Experimental and numerical investigation of sands and Geldart A biomass co-fluidization

Abstract

This study investigated the fluidization of sands and small Geldart A biomass mixtures. The mixture fluidized like Geldart A type particles with a uniform bed expansion regime before bubbling. The video recorded color distance between pure sands and sands–biomass mixtures was used to estimate the sands–biomass mixing. The coarse-grained computational fluid dynamics–discrete element method with a hybrid drag model which couples the Syamlal–O'Brien drag and a filtered drag can capture the mixing while the simulation with Gidaspow drag predicted a segregated bed. The simulations were further validated with experimental measured pressure drops. The time averaged pressure drop equals the weight of the bed material, however, its fluctuation is about three times of the bed material fluctuation.

Authors:
ORCiD logo [1];  [2]; ORCiD logo [1];  [1];  [2];  [2]
  1. National Energy Technology Lab. (NETL), Morgantown, WV (United States); Leidos Research Support Team, Morgantown, WV (United States)
  2. National Energy Technology Lab. (NETL), Morgantown, WV (United States)
Publication Date:
Research Org.:
National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)
Sponsoring Org.:
USDOE Office of Fossil Energy (FE)
OSTI Identifier:
1635630
Resource Type:
Accepted Manuscript
Journal Name:
AIChE Journal
Additional Journal Information:
Journal Volume: 66; Journal Issue: 6; Journal ID: ISSN 0001-1541
Publisher:
American Institute of Chemical Engineers
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; biomass; coarse-grained CFD–DEM; drag model; filtered model; fluidized bed

Citation Formats

Lu, Liqiang, Yu, Jia, Gao, Xi, Xu, Yupeng, Shahnam, Mehrdad, and Rogers, William A. Experimental and numerical investigation of sands and Geldart A biomass co-fluidization. United States: N. p., 2020. Web. https://doi.org/10.1002/aic.16969.
Lu, Liqiang, Yu, Jia, Gao, Xi, Xu, Yupeng, Shahnam, Mehrdad, & Rogers, William A. Experimental and numerical investigation of sands and Geldart A biomass co-fluidization. United States. https://doi.org/10.1002/aic.16969
Lu, Liqiang, Yu, Jia, Gao, Xi, Xu, Yupeng, Shahnam, Mehrdad, and Rogers, William A. Mon . "Experimental and numerical investigation of sands and Geldart A biomass co-fluidization". United States. https://doi.org/10.1002/aic.16969. https://www.osti.gov/servlets/purl/1635630.
@article{osti_1635630,
title = {Experimental and numerical investigation of sands and Geldart A biomass co-fluidization},
author = {Lu, Liqiang and Yu, Jia and Gao, Xi and Xu, Yupeng and Shahnam, Mehrdad and Rogers, William A.},
abstractNote = {This study investigated the fluidization of sands and small Geldart A biomass mixtures. The mixture fluidized like Geldart A type particles with a uniform bed expansion regime before bubbling. The video recorded color distance between pure sands and sands–biomass mixtures was used to estimate the sands–biomass mixing. The coarse-grained computational fluid dynamics–discrete element method with a hybrid drag model which couples the Syamlal–O'Brien drag and a filtered drag can capture the mixing while the simulation with Gidaspow drag predicted a segregated bed. The simulations were further validated with experimental measured pressure drops. The time averaged pressure drop equals the weight of the bed material, however, its fluctuation is about three times of the bed material fluctuation.},
doi = {10.1002/aic.16969},
journal = {AIChE Journal},
number = 6,
volume = 66,
place = {United States},
year = {2020},
month = {3}
}

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