Experiment and CFD Investigation of Biochar Elutriation in Fluidized Bed

Liqiang Lu; Cheng Li; Steven Rowan; Bryan Hughes; Xi Gao; Mehrdad Shahnam; William A. Rogers

doi:10.1002/aic.17506

Experiment and CFD Investigation of Biochar Elutriation in Fluidized Bed

Liqiang Lu^*, Cheng Li^*, Steven Rowan, Bryan Hughes, Xi Gao, Mehrdad Shahnam, William A. Rogers

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

In fluidized bed biomass fast pyrolysis, the biomass is converted to biochar and elutriated. The elutriation rate is a key parameter in reactor designs and operations. This research presents a video-based continuous measurement of biochar elutriation rate in a fluidized bed with sands and biomass as bed materials. The fluidized bed is simulated with the computational fluid dynamics—coarse-grained discrete element method (CFD-CGDEM) in MFiX. The fluidization behavior of nonspherical sands can be more accurately captured when a rolling friction model is used. The predicted elutriation rate is close to the experimental measurement when the particle size distributions are considered and the filtered drag with a shape correction is used. These results validated the accuracy of the MFiX-based CFD framework for the prediction of biochar elutriations in the fluidized bed biomass fast pyrolysis reactor. © 2021 American Institute of Chemical Engineers.

Original language	English
Journal	AICHE Journal
DOIs	https://doi.org/10.1002/aic.17506
State	Published - 26 Oct 2021

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@article{73332106df68465ba719e079b412e38d,

title = "Experiment and CFD Investigation of Biochar Elutriation in Fluidized Bed",

abstract = "In fluidized bed biomass fast pyrolysis, the biomass is converted to biochar and elutriated. The elutriation rate is a key parameter in reactor designs and operations. This research presents a video-based continuous measurement of biochar elutriation rate in a fluidized bed with sands and biomass as bed materials. The fluidized bed is simulated with the computational fluid dynamics—coarse-grained discrete element method (CFD-CGDEM) in MFiX. The fluidization behavior of nonspherical sands can be more accurately captured when a rolling friction model is used. The predicted elutriation rate is close to the experimental measurement when the particle size distributions are considered and the filtered drag with a shape correction is used. These results validated the accuracy of the MFiX-based CFD framework for the prediction of biochar elutriations in the fluidized bed biomass fast pyrolysis reactor. {\textcopyright} 2021 American Institute of Chemical Engineers.",

author = "Liqiang Lu and Cheng Li and Steven Rowan and Bryan Hughes and Xi Gao and Mehrdad Shahnam and Rogers, {William A.}",

year = "2021",

month = oct,

day = "26",

doi = "10.1002/aic.17506",

language = "英语",

journal = "AICHE Journal",

issn = "0001-1541",

publisher = "Wiley-Blackwell",

}

TY - JOUR

T1 - Experiment and CFD Investigation of Biochar Elutriation in Fluidized Bed

AU - Lu, Liqiang

AU - Li, Cheng

AU - Rowan, Steven

AU - Hughes, Bryan

AU - Gao, Xi

AU - Shahnam, Mehrdad

AU - Rogers, William A.

PY - 2021/10/26

Y1 - 2021/10/26

N2 - In fluidized bed biomass fast pyrolysis, the biomass is converted to biochar and elutriated. The elutriation rate is a key parameter in reactor designs and operations. This research presents a video-based continuous measurement of biochar elutriation rate in a fluidized bed with sands and biomass as bed materials. The fluidized bed is simulated with the computational fluid dynamics—coarse-grained discrete element method (CFD-CGDEM) in MFiX. The fluidization behavior of nonspherical sands can be more accurately captured when a rolling friction model is used. The predicted elutriation rate is close to the experimental measurement when the particle size distributions are considered and the filtered drag with a shape correction is used. These results validated the accuracy of the MFiX-based CFD framework for the prediction of biochar elutriations in the fluidized bed biomass fast pyrolysis reactor. © 2021 American Institute of Chemical Engineers.

AB - In fluidized bed biomass fast pyrolysis, the biomass is converted to biochar and elutriated. The elutriation rate is a key parameter in reactor designs and operations. This research presents a video-based continuous measurement of biochar elutriation rate in a fluidized bed with sands and biomass as bed materials. The fluidized bed is simulated with the computational fluid dynamics—coarse-grained discrete element method (CFD-CGDEM) in MFiX. The fluidization behavior of nonspherical sands can be more accurately captured when a rolling friction model is used. The predicted elutriation rate is close to the experimental measurement when the particle size distributions are considered and the filtered drag with a shape correction is used. These results validated the accuracy of the MFiX-based CFD framework for the prediction of biochar elutriations in the fluidized bed biomass fast pyrolysis reactor. © 2021 American Institute of Chemical Engineers.

U2 - 10.1002/aic.17506

DO - 10.1002/aic.17506

M3 - 文章

SN - 0001-1541

JO - AICHE Journal

JF - AICHE Journal

ER -

Experiment and CFD Investigation of Biochar Elutriation in Fluidized Bed

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