Sensitivity analysis of the rapid decomposition of methane in an aerosol flow reactor |
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| Affiliation: | 1. Department of Chemical Engineering, ECCH 111, Campus Box 424, University of Colorado, Boulder, CO 80309-0424, USA;2. Department of Chemical and Materials Engineering, University of Cincinnati, Cincinnati, OH 45221-0171, USA;1. Institute of Mechanical Engineering, École Polytechnique Fédérale de Lausanne, Switzerland;2. Department of Mechanical, Materials and Manufacturing Engineering, University of Nottingham, UK;3. Department of Chemical Engineering, Imperial College London, London, UK;1. Department of Chemistry and Bioengineering, Tampere University of Technology, P.O. Box 541, 33101 Tampere, Finland;2. ÅF-Consult, Bertel Jungin aukio 9, 02600 Espoo, Finland;1. Department of Chemical Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia;2. Department of Chemical Engineering, University of Nizwa, Al Dakulaya, Oman |
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| Abstract: | A one-dimensional, nonisothermal model is developed to describe the thermal dissociation of methane to hydrogen and carbon black occurring in a fluid-wall aerosol flow reactor. The model expressions are scaled and nondimensionalized to determine the minimum parametric representation of the system. The sensitivity of this thermal dissociation to three parameters (flow rate of carbon particles fed to initiate the reaction, carbon particle radius, and reactor wall temperature) is studied. The results of the study indicate that in order to achieve nearly complete conversion, high reactor wall temperatures must be maintained. In addition, micron-sized carbon black particles must be fed into the reactor to enhance the heat transfer to the gas phase. The actual flow rate of particles fed is not critical, as long as some flow rate of fine particles is maintained. |
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