Parametric study of hydrogen production from ethanol steam reforming in a membrane microreactor
| Autor: | G. M. Zanin, Flávio Faria de Moraes, M. de-Souza |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Hydrogen
General Chemical Engineering Portable devices Modeling Analytical chemistry lcsh:TP155-156 Proton exchange membrane fuel cell chemistry.chemical_element Bioethanol Chemical reaction PEM fuel cells Steam reforming Membrane Chemical engineering chemistry Biofuel lcsh:Chemical engineering Microchannel reactor Microreactor Hydrogen production |
| Zdroj: | Brazilian Journal of Chemical Engineering, Volume: 30, Issue: 2, Pages: 355-367, Published: JUN 2013 Brazilian Journal of Chemical Engineering v.30 n.2 2013 Brazilian Journal of Chemical Engineering Associação Brasileira de Engenharia Química (ABEQ) instacron:ABEQ Brazilian Journal of Chemical Engineering, Vol 30, Iss 2, Pp 355-367 (2013) |
| ISSN: | 0104-6632 |
| DOI: | 10.1590/s0104-66322013000200013 |
| Popis: | Microreactors are miniaturized chemical reaction systems, which contain reaction channels with characteristic dimensions in the range of 10-500 µm. One possible application for microreactors is the conversion of ethanol to hydrogen used in fuel cells to generate electricity. In this paper a rigorous isothermal, steady-state two-dimensional model was developed to simulate the behavior of a membrane microreactor based on the hydrogen yield from ethanol steam reforming. Furthermore, this membrane microreactor is compared to a membraneless microreactor. A potential advantage of the membrane microreactor is the fact that both ethanol steam reforming and the separation of hydrogen by a permselective membrane occur in one single microdevice. The simulation results for steam reforming yields are in agreement with experimental data found in the literature. The results show that the membrane microreactorpermits a hydrogen yield of up to 0.833 which is more than twice that generated by the membraneless reactor. More than 80% of the generated hydrogen permeates through the membrane and, due to its high selectivity, the membrane microreactor delivers high-purity hydrogen to the fuel cell. |
| Databáze: | OpenAIRE |
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