A numerical analysis of rate data for packed bed reactors in gas-solid reaction systems

1987 ◽  
Vol 4 (2) ◽  
pp. 135-142 ◽  
Author(s):  
Heung Chul Park ◽  
Hee Moon
Keyword(s):  
Numerical Analysis ◽  
Packed Bed ◽  
Rate Data ◽  
Solid Reaction ◽  
Reaction Systems ◽  
Packed Bed Reactors ◽  
Gas Solid Reaction

Numerical Analysis of Residence Time Distribution in Packed Bed Reactors with Irregular Particle Arrangements

2015 ◽  
Vol 10 (1) ◽  
pp. 17-26 ◽  
Author(s):  
Theodoros Atmakidis ◽  
Eugeny Y. Kenig
Keyword(s):  
Numerical Analysis ◽  
Residence Time ◽  
Particle Diameter ◽  
Time Estimation ◽  
Packed Bed ◽  
Processing Method ◽  
Tracer Concentration ◽  
Experimental Procedure ◽  
Packed Bed Reactors ◽  
Irregular Particle

Abstract The computational fluid dynamics approach is applied to packed bed reactors with moderate tube-to-particle diameter ratios. In order to generate irregular particle arrangements within the reactors, a modified ballistic deposition method is used. While our previous studies were focused on pressure drop and mass transfer characteristics, the present paper uses the same framework to investigate the dispersion phenomena occurring in such reactors. Two different methods, namely the tracer and the post-processing method, are applied. The first method imitates the experimental procedure in which a non-diffusive tracer is injected into the packed bed. The residence time can be evaluated from the evolution of the tracer concentration. The second method is purely numerical and allows fast residence time estimation. Simulation results are successfully validated against experimental data from literature. The suggested numerical analysis is a valuable tool toward a deeper understanding of the fundamental transport phenomena in such reactors and, consequently, for the improvement of the packed bed performance.

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