Development and confirmation of a simple procedure to measure solids distribution in fluidized beds using tracer particles

Yupeng Xu; Tingwen Li; Liqiang Lu; Xi Gao; Sina Tebianian; John R. Grace; Jamal Chaouki; Thomas W. Leadbeater; Rouzbeh Jafari; David J. Parker; Jonathan Seville; Naoko Ellis

doi:10.1016/j.ces.2020.115501

Development and confirmation of a simple procedure to measure solids distribution in fluidized beds using tracer particles

Yupeng Xu, Tingwen Li, Liqiang Lu, Xi Gao, Sina Tebianian, John R. Grace, Jamal Chaouki, Thomas W. Leadbeater, Rouzbeh Jafari, David J. Parker, Jonathan Seville, Naoko Ellis

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6 Citations (Scopus)

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Abstract

The spatial distribution of solid particles is a key factor affecting the performance of fluidized bed reactors. Non-invasive techniques including radioactive particle tracking (RPT) and positron emission particle tracking (PEPT) are deployed to measure the solids distribution. Different methods to calibrate the particle tracking measurements have been developed to quantify mean solids concentration. In this paper, gas-solid flows in a traveling fluidized bed are simulated with CFD-DEM and the behavior of different particles, including bulk sand particles and tracer particles are investigated. The simulated hydrodynamics are compared with experimental measurements. Analyses are carried out to derive the mean solids concentration from the tracer particle data. Different calibration approaches are examined, and the simple calibration method is verified. It is shown that the mean solids concentration can be measured reliably using representative tracer particles. The experimental RPT data are then revisited with the new calibration method which yields more realistic results.

Original language	English
Article number	115501
Pages (from-to)	1-11
Number of pages	11
Journal	Chemical Engineering Science
Volume	217
Early online date	21 Jan 2020
DOIs	https://doi.org/10.1016/j.ces.2020.115501
Publication status	Published - 18 May 2020

Keywords

Coarse grained method
Computational fluid dynamics
Particle tracking
Solids volume fraction
Tracer particles
Traveling fluidized bed

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering
Industrial and Manufacturing Engineering

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Xu_et_al_Development_and_confirmation_of_a_simple_procedure_Chemical_Engineering_Science_2020Accepted author manuscript, 3.01 MBLicence: Creative Commons: Attribution-NonCommercial-NoDerivs (CC BY-NC-ND)

https://www.sciencedirect.com/science/article/pii/S0009250920300336Licence: None: All rights reserved

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Xu, Y., Li, T., Lu, L., Gao, X., Tebianian, S., Grace, J. R., Chaouki, J., Leadbeater, T. W., Jafari, R., Parker, D. J., Seville, J., & Ellis, N. (2020). Development and confirmation of a simple procedure to measure solids distribution in fluidized beds using tracer particles. Chemical Engineering Science, 217, 1-11. Article 115501. https://doi.org/10.1016/j.ces.2020.115501

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abstract = "The spatial distribution of solid particles is a key factor affecting the performance of fluidized bed reactors. Non-invasive techniques including radioactive particle tracking (RPT) and positron emission particle tracking (PEPT) are deployed to measure the solids distribution. Different methods to calibrate the particle tracking measurements have been developed to quantify mean solids concentration. In this paper, gas-solid flows in a traveling fluidized bed are simulated with CFD-DEM and the behavior of different particles, including bulk sand particles and tracer particles are investigated. The simulated hydrodynamics are compared with experimental measurements. Analyses are carried out to derive the mean solids concentration from the tracer particle data. Different calibration approaches are examined, and the simple calibration method is verified. It is shown that the mean solids concentration can be measured reliably using representative tracer particles. The experimental RPT data are then revisited with the new calibration method which yields more realistic results.",

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AU - Tebianian, Sina

AU - Grace, John R.

AU - Chaouki, Jamal

AU - Leadbeater, Thomas W.

AU - Jafari, Rouzbeh

AU - Parker, David J.

AU - Seville, Jonathan

AU - Ellis, Naoko

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KW - Computational fluid dynamics

KW - Particle tracking

KW - Solids volume fraction

KW - Tracer particles

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Development and confirmation of a simple procedure to measure solids distribution in fluidized beds using tracer particles

Abstract

Keywords

ASJC Scopus subject areas

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