Effects of fuel processing methods on industrial scale biogas-fuelled solid oxide fuel cell system for operating in wastewater treatment plants

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DOIResolve DOI: http://doi.org/10.1016/j.jpowsour.2009.09.032
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TypeArticle
Journal titleJournal of Power Sources
Volume195
Issue5
Pages14461453; # of pages: 8
SubjectSolid oxide fuel cell; CHP system; Biogas; Wastewater treatment plant; Fuel processor
AbstractThe performance of three solid oxide fuel cell (SOFC) systems, fuelled by biogas produced through anaerobic digestion (AD) process, for heat and electricity generation in wastewater treatment plants (WWTPs) is studied. Each system has a different fuel processing method to prevent carbon deposition over the anode catalyst under biogas fuelling. Anode gas recirculation (AGR), steam reforming (SR), and partial oxidation (POX) are the methods employed in systems I–III, respectively. A planar SOFC stack used in these systems is based on the anode-supported cells with Ni–YSZ anode, YSZ electrolyte and YSZ–LSM cathode, operated at 800 ◦C. A computer code has been developed for the simulation of the planar SOFC in cell, stack and system levels and applied for the performance prediction of the SOFC systems. The key operational parameters affecting the performance of the SOFC systems are identified. The effect of these parameters on the electrical and CHP efficiencies, the generated electricity and heat, the total exergy destruction, and the number of cells in SOFC stack of the systems are studied. The results show that among the SOFC systems investigated in this study, the AGR and SR fuel processor-based systems with electrical efficiency of 45.1% and 43%, respectively, are suitable to be applied in WWTPs. If the entire biogas produced in a WWTP is used in the AGR or SR fuel processor-based SOFC system, the electricity and heat required to operate the WWTP can be completely self-supplied and the extra electricity generated can be sold to the electrical grid.
Publication date
LanguageEnglish
AffiliationNRC Institute for Chemical Process and Environmental Technology (ICPET-ITPCE); National Research Council Canada
Peer reviewedYes
NRC number51781
NPARC number14806203
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Record identifier5dc12d40-e112-4dea-b66e-f845950c724d
Record created2010-03-30
Record modified2016-05-09
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