Ethanol steam reforming thermally coupled with fuel combustion in a parallel plate reactor
| Autor: | Ulrich Nieken, Gerhart Eigenberger, Vanessa Gepert, Eduardo Lopez, Achim Gritsch |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
Ethanol
Methane reformer Chemistry General Chemical Engineering education General Chemistry INGENIERÍAS Y TECNOLOGÍAS Combustion Parallel plate steam reforming Industrial and Manufacturing Engineering Catalysis Steam reforming Ingeniería Química chemistry.chemical_compound plate reactor Chemical engineering Catalytic reforming Otras Ingeniería Química Fuel cells health care economics and organizations |
| DOI: | 10.1021/ie202364y |
| Popis: | This contribution reports experimental studies of ethanol steam reforming for the production of a hydrogen-rich reformate for fuel cells. A Pd-based catalyst, coated on corrugated metallic structures, was used. Axial concentration profiles for all components present in the system were measured in a kinetic reactor under isothermal conditions for different temperatures, flow rates, and steam-to-carbon ratios. Appropriate activity and hydrogen selectivity were achieved for this catalytic system at 650 °C, with complete ethanol conversion (no acetaldehyde), ca. 5% carbon monoxide and 1% methane as byproducts. For reactor modeling in an appropriate range of operating conditions, a simple global kinetics model is proposed; the correspondent parameters were fitted to the experimental data. Thermal coupling between ethanol steam reforming and hydrogen combustion was experimentally studied for subsequent implementation in a parallel-plate reactor, preferably in a so-called folded plate reactor. A single unit of this reactor, consisting of one combustion channel in between two halves of reforming channels was selected for the experimental proof-of-concept. The influence of different operating variables (ethanol load, feed distribution of the combustion fuel along the channel length, operation temperature, and steam-to-carbon ratio) on the reactor performance and the thermal coupling pattern will be discussed. Fil: Lopez, Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina. University of Stuttgart; Alemania Fil: Gepert, Vanessa. University of Stuttgart; Alemania Fil: Gritsch, Achim. University of Stuttgart; Alemania Fil: Nieken, Ulrich. University of Stuttgart; Alemania Fil: Eigenberger, Gerhart. University of Stuttgart; Alemania |
| Databáze: | OpenAIRE |
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