TY  - INPR
N1  - © 2025 The Author(s). AIChE Journal published by Wiley Periodicals LLC on behalf of American Institute of Chemical Engineers.


This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
TI  - An experimental flow regime map to dynamically structure gas-solid bubbling fluidized beds
Y1  - 2025/01/01/
AV  - public
EP  - 18
JF  - AIChE Journal
A1  - Wu, Kaiqiao
A1  - Francia, Victor
A1  - Jiang, Shuxian
A1  - Coppens, Marc-Olivier
KW  - Science & Technology
KW  -  Technology
KW  -  Engineering
KW  -  Chemical
KW  -  Engineering
KW  -  bubbling
KW  -  chaos control
KW  -  fluidization
KW  -  oscillating flow
KW  -  pattern
KW  -  process intensification
KW  -  LOUVER BAFFLES
KW  -  HYDRODYNAMICS
KW  -  PARTICLES
KW  -  CFD
KW  -  SIMULATION
N2  - Employing oscillatory gas flows to create ordered bubble dynamics in fluidized beds represents a promising approach in reactor design, enhancing efficiency, scalability, and control. This study reports an extensive experimental campaign that identifies the operational regime for structuring Geldart B fluidized beds, introducing a novel pattern recognition algorithm to quantify flow stability and distinguish between ?structured? and ?unstructured? oscillating beds. The analysis reveals the characteristic features of structured units, including enhanced scalability, homogeneity with narrower bubble size and separation distributions, controlled bubble dynamics, and compartmentalized solid mixing. A nondimensional bubble size, derived from natural frequency and two-phase theory, is proposed to describe the relationship between oscillation characteristics and bubble nucleation. This allows the formulation of a general map to fine-tune oscillating bed operations. The study provides the first comprehensive framework for real-time control of structured beds and sets the stage for further exploration in process intensification and scaling.
ID  - discovery10204459
UR  - https://doi.org/10.1002/aic.18681
PB  - WILEY
SN  - 0001-1541
ER  -