CFD simulation of a chemical-looping fuel reactor utilizing solid fuel |
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Authors: | Kartikeya Mahalatkar John Kuhlman E David Huckaby Thomas O'Brien |
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Affiliation: | aNational Energy Technology Lab., 3610 Collins Ferry Rd., Morgantown, WV 26507, USA;bWest Virginia University, Department of Mechanical and Aerospace Engineering, Morgantown, WV 26506, USA;cANSYS Inc., 3647 Collins Ferry Rd., Suite A, Morgantown, WV 26505, USA |
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Abstract: | A computational fluid dynamic (CFD) study has been carried out for the fuel reactor for a new type of combustion technology called chemical-looping combustion (CLC). CLC involves combustion of fuels by heterogeneous chemical reactions with an oxygen carrier, usually a granular metal oxide, exchanged between two reactors. There have been extensive experimental studies on CLC, however CFD simulations of this concept are quite limited. In the present paper we have developed a CFD model for the fuel reactor of a chemical-looping combustor described in the literature, which utilized a Fe-based carrier (ilmenite) and coal. An Eulerian multiphase continuum model was used to describe both the gas and solid phases, with detailed sub-models to account for fluid–particle and particle–particle interaction forces. Global reaction models of fuel and carrier chemistry were utilized. The transient results obtained from the simulations were compared with detailed experimental time-varying outlet species concentrations (Leion et al., 2008) and provided a reasonable match with the reported experimental data. |
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Keywords: | Computational fluid dynamics Chemical reactors Multiphase reactions Ilmenite Fluidization Numerical analysis |
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