ITHES   25084
INSTITUTO DE TECNOLOGIAS DEL HIDROGENO Y ENERGIAS SOSTENIBLES
Unidad Ejecutora - UE
artículos
Título:
Simulation of CO Preferential Oxidation (COPrOx) Monolithic Reactors
Autor/es:
LEANDRO G. JEIFETZ; PABLO GIUNTA; FERNANDO MARIÑO; NORMA AMADEO; MIGUEL LABORDE
Revista:
INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING
Editorial:
BERKELEY ELECTRONIC PRESS
Referencias:
Lugar: Berlín; Año: 2014 vol. 12 p. 1 - 12
ISSN:
1542-6580
Resumen:
In this work, a COPrOx monolithic reactor with a CuO/CeO2/Al2O3 catalytic washcoat was modelled to purify a H2 stream for a 2 kW PEM fuel cell. Preliminary simulations included isothermal monoliths operating between 423 and 463 K, and the optimization of linear 10 axial temperature profiles. For a fixed total system size and a desired CO outlet molar fraction lower than 20 ppm, an isothermal temperature profile maximized the global selectivity towards CO oxidation. Then, different schemes of adiabatic monoliths with interstage cooling 15 were modelled and evaluated. It was found that wide operating temperature ranges lower the necessary num-ber of stages, but decrease the global selectivity and rise system sensitivity to inlet temperatures. A 1D heteroge-neous model was used to simulate the monoliths.