Monoliths as suitable catalysts for reverse-flow combustors: Modeling and experimental validation

Authors

  • Pablo Marín,

    1. Dept. of Chemical Engineering and Environmental Technology, Facultad de Química, University of Oviedo, Julián Clavería 8, Oviedo 33006, Spain
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  • Salvador Ordóñez,

    Corresponding author
    1. Dept. of Chemical Engineering and Environmental Technology, Facultad de Química, University of Oviedo, Julián Clavería 8, Oviedo 33006, Spain
    • Dept. of Chemical Engineering and Environmental Technology, Facultad de Química, University of Oviedo, Julián Clavería 8, Oviedo 33006, Spain
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  • Fernando V. Díez

    1. Dept. of Chemical Engineering and Environmental Technology, Facultad de Química, University of Oviedo, Julián Clavería 8, Oviedo 33006, Spain
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Abstract

The performance of a bench-scale monolithic reverse-flow reactor (RFR) for methane combustion has been experimentally studied in this work. The influence of the different operating parameters, such as total gas flow rate (2.5 × 10−4–5 × 10−4 m3 s−1 (STP)), methane inlet concentration (1000–5500 ppm), and switching time (300–900 s) on the reactor performance (outlet conversion and stability), has been experimentally determined. The validation of a heterogeneous one-dimensional dynamic model for monolithic beds with the obtained experimental data allows the use of this model to simulate the behavior of industrial-scale reactors. In the second part of the work, a systematic comparison of particulate and monolithic RFRs is carried out through design curves. Reactor length for 99% outlet conversion and the corresponding pressure drop is determined for varying operating conditions (surface velocity and inlet methane concentration). © 2010 American Institute of Chemical Engineers AIChE J, 2010

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