International Journal of Hydrogen Energy, Volume 38, Issue 6, 27 February
2013, Pages 2868–2883
Anode recirculation behavior of a solid oxide
fuel cell system: A safety analysis and a performance optimization
Ming Liu (a), A. Lanzini (b), W. Halliop (c),
V.R.M. Cobas (d), A.H.M. Verkooijen (a), P.V. Aravind (a)
a Delft University of Technology, Energy Technology Section, Leeghwaterstraat
44, 2628 CA Delft, The Netherlands
b Politecnico di Torino – Energetics Department, Corso Duca degli Abruzzi 24,
10129 Torino, Italy
c Electrochemical Energy Systems and Technologies Ltd., 3314 Heska Court,
Inverary, Ontario K0H 1X0, Canada
d Excellence Group in Thermal Power and Distributed Generation, Federal
University of Itajubá, Av. BPS 1303, CP 50, Itajubá, Minas Gerais, Brazil
Abstract
Solid oxide fuel cell (SOFC) systems that
operate with natural gas typically use anode recirculation. Researchers studied
anode recirculation behavior to analyze its effect on safety issues regarding
carbon deposition and nickel oxidation and the performance of an SOFC system
fed with gasification syngas under steady state operation.
They constructed a detailed model including a
recirculation model and an SOFC stack model for the investigation. Results reveal
that the entrainment ratio with the gasification syngas is much smaller than
that with the natural gas, and the gasification syngas does not have the
tendency toward carbon deposition or nickel oxidation under the operating
conditions studied.
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