Modeling of Membrane Reactor
-
Karl A. Hoff
Abstract
A two-dimensional model for a membrane reactor used for the absorption of CO2 into amines was developed and two solution procedures were tested for the combined diffusion-reaction problem. The method of lines/finite difference method is the fastest and most stable, but conservation of mass is not guaranteed. The finite volume method needs very good initial estimates to converge, and is much slower. This shows a potential problem in the use of commercial CFD-codes for coupled fluid dynamic, diffusion, and chemical reaction problems. The model has been validated with respect to effects of steep wall diffusivity profiles, membrane pore penetration, and available gas/liquid contact area. The agreement between simulated and experimental absorption fluxes is very good, and the experimental unit is found to have good sensitivity for obtaining kinetic and diffusion parameters.
©2011 Walter de Gruyter GmbH & Co. KG, Berlin/Boston
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Artikel in diesem Heft
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- Applications of Liquid-Solid Fluidization
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- Article
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- Application of Computational Fluid Dynamics to Multiphase Flow in Bubble Columns
- Modeling of the Catalytic Distillation Process for the Synthesis of Ethyl Cellosolve Using A Three-Phase Nonequilibrium Model
- CFD Simulations of Gas Fluidized Beds Using Alternative Eulerian-Eulerian Modelling Approaches
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