Modeling of H-2 Permeation through Electroless Pore-Plated Composite Pd Membranes Using Computational Fluid Dynamics
This work focused on the computational fluid dynamics (CFD) modeling of H-2/N-2 separation in a membrane permeator module containing a supported dense Pd-based membrane that was prepared using electroless pore-plating (ELP-PP). An easy-to-implement model was developed based on a source-sink pair for...
| Autores: | , , , , |
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| Formato: | artículo |
| Fecha de publicación: | 2021 |
| País: | España |
| Recursos: | Universidad Rey Juan Carlos |
| Repositorio: | BURJC-Digital. Repositorio Institucional de la Universidad Rey Juan Carlos |
| OAI Identifier: | oai:burjcdigital.urjc.es:10115/130217 |
| Acesso em linha: | https://hdl.handle.net/10115/130217 https://doi.org/10.3390/membranes11020123 |
| Access Level: | acceso abierto |
| Palavra-chave: | Chemical engineering (miscellaneous) Chemistry, physical Engineering, chemical Filtration and separation General materials science Materials science, multidisciplinary Polymer science Process chemistry and technology Química Composite membrane Darcy& #8211 Darcy–forcheimer Electroless plating Experimental validation Forcheimer Gas separation Hydrogen Multiphysics modeling Palladium Permeation rate Sink Source& Source–sink |
| Resumo: | This work focused on the computational fluid dynamics (CFD) modeling of H-2/N-2 separation in a membrane permeator module containing a supported dense Pd-based membrane that was prepared using electroless pore-plating (ELP-PP). An easy-to-implement model was developed based on a source-sink pair formulation of the species transport and continuity equations. The model also included the Darcy-Forcheimer formulation for modeling the porous stainless steel (PSS) membrane support and Sieverts' law for computing the H-2 permeation flow through the dense palladium film. Two different reactor configurations were studied, which involved varying the hydrogen flow permeation direction (in-out or out-in). A wide range of experimental data was simulated by considering the impact of the operating conditions on the H-2 separation, such as the feed pressure and the H-2 concentration in the inlet stream. Simulations of the membrane permeator device showed an excellent agreement between the predicted and experimental data (measured as permeate and retentate flows and H-2 separation). Molar fraction profiles inside the permeator device for both configurations showed that concentration polarization near the membrane surface was not a limit for the hydrogen permeation but could be useful information for membrane reactor design, as it showed the optimal length of the reactor. |
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