Heat Supply and Hydrogen Yield in an Ethanol Microreformer
| Autor: | Andrés M. Anzola, Daniel Oscar Borio, Marisa Noemi Pedernera, Noemi S. Schbib, Yanina Marianela Bruschi, Eduardo López |
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| Rok vydání: | 2010 |
| Předmět: | |
| Zdroj: | Industrial & Engineering Chemistry Research. 50:2698-2705 |
| ISSN: | 1520-5045 0888-5885 |
| DOI: | 10.1021/ie100739m |
| Popis: | A simulation study of a microreactor for steam reforming of ethanol (ESR) over a washcoated Pd catalyst is reported in the present manuscript. Both co- and countercurrent configurations are considered for the streams of reactants and flue gas through microchannels of a square section. Two contiguous channels, assumed as representative of the whole reactor behavior, are simulated using a 1D pseudohomogeneous model. The microreactor performance is analyzed for different heat-supply strategies and channel sizes. The results demonstrate that the ESR in the microreactor is strongly controlled by the heat supply. The hydrogen yield has a marked dependence on the total amount of heat transferred from the flue gas to the reformate and the axial distribution of the heat flow. The cocurrent-flow configuration proved to yield the higher performance. While smaller channels work better for cocurrent operation, an optimum compromise value is found for the channel size in countercurrent flow. |
| Databáze: | OpenAIRE |
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