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Chemcial Industry and Engineering 2025, Vol. 42 Issue (1) :157-164    DOI: 10.13353/j.issn.1004.9533.20230105
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Numerical simulation and verification of flow characteristics of asphalt-based spherical activated carbon gas-solid fluidized bed
GE Qiannan, YANG Zhen
College of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China

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Abstract The hydrodynamic behavior of a gas-solid fluidization bed of asphalt-based spherical activated carbon is numerically simulated and experimentally verified in conjunction with particle flow dynamics theory. The hydrodynamic properties of two-dimensional gas-solid fluidized beds were investigated using the computational fluid dynamics software ANSYS Fluent. A multi-fluid Eulerian model is used to analyze the simulation results of five traction models, numerical parameters, inlet velocity, bed pressure drop, and expansion height by comparing cold-mode tests. It is shown that the numerical calculation parameters of the gas-solid fluidized beds under the Syamlal-O’Brien model are best simulated using a second-order discrete format with a time step of 0.000 1 s and a convergence criterion of 10-3. The ideal speed for bed operation is between 0.35 and 0.45 m·s-1 when the particles in the bed are fluidized. The experimental and simulated results for bed pressure drop and expansion height are verified to be in good agreement.
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GE Qiannan
YANG Zhen
Keywordsgas-solid fluidized bed   spherical activated carbon   numerical simulation   drag force model   flow characteristics     
Received 2023-02-07;
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GE Qiannan, YANG Zhen.Numerical simulation and verification of flow characteristics of asphalt-based spherical activated carbon gas-solid fluidized bed[J]  Chemcial Industry and Engineering, 2025,V42(1): 157-164
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