Quantifying particle movement in a spout-fluidized bed with irregular feedstock morphology

Conry, Bryan; López-Honorato, Eddie; Heldt, Ryan; Gerczak, Tyler

doi:10.1016/j.ces.2025.121197

Quantifying particle movement in a spout-fluidized bed with irregular feedstock morphology

Journal Article · Wed Jan 08 00:00:00 EST 2025 · Chemical Engineering Science

DOI:https://doi.org/10.1016/j.ces.2025.121197· OSTI ID:2502178

^[1]; ^[1]; Heldt, Ryan ^[1]; ^[1]

Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Here, the spout-bed fluidization behavior of nonspherical, 140 μm SiC feedstock was quantified via particle image velocimetry for varying gas distributor geometries. A bench-scale, room-temperature fluidization setup was assembled to model a 50 mm fluidized bed chemical vapor deposition (FB-CVD) system, and fluidized bed motion was captured using a high-speed camera. Modular tips with varying inlet geometries were 3D printed and tested on the bench-scale rig using identical feedstock and gas flow rates in the range of 3.0–9.0 L/min. Fluidization behavior was quantified by extracting parameters of the bed velocity, frequency, dead time, and other measurements, which were ranked for each inlet geometry configuration tested. The results from this work demonstrate that changing the path of inlet gas flow can significantly change the hydrodynamics within a spout-fluidized bed under identical feedstock, loading, and flow rate conditions, potentially enabling experimental control of particle fluidization behavior for a given condition. Moreover, composite rankings of fluidization behavior for unique distributor geometries hold potential to guide the design of FB-CVD experiments for various engineering and scientific applications.

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This content will become publicly available on Thu Jan 08 00:00:00 EST 2026

Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA), Office of Defense Nuclear Nonproliferation

Grant/Contract Number:: AC05-00OR22725

OSTI ID:: 2502178

Journal Information:: Chemical Engineering Science, Vol. 306; ISSN 0009-2509

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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