Biogas fuel reforming for solid oxide fuel cells

In this paper, strategies for biogas reforming and their ensuing effects on solid oxide fuel cell (SOFC) performance are explored. Synthesized biogas (65% CH4 + 35% CO2) fuel streams are reformed over a rhodium catalyst supported on a porous α-alumina foam. Reforming approaches include steam reforming and catalytic partial oxidation (CPOX) utilizing either air or pure oxygen as the oxidant. A computational model is developed and utilized to guide the specification of reforming conditions that maximize both CH4 and CO2 conversions. Model predictions are validated with experimental measurements over a wide range of biogas-reforming conditions. Higher reforming temperatures are shown to activate the biogas-borne CO2 to enable significant methane dry-reforming chemistry. Dry reforming minimizes the oxidant-addition needs for effective biogas conversion, potentially decreasing the thermal requirements for reactant heating and improving system efficiency. Such high-temperature reforming conditions are prevalent...

[1]  Kevin Kendall,et al.  Biogas powering a small tubular solid oxide fuel cell , 1998 .

[2]  S. Assabumrungrat,et al.  Determination of the boundary of carbon formation for dry reforming of methane in a solid oxide fuel cell , 2006 .

[3]  Kazunari Sasaki,et al.  NiO–ScSZ and Ni0.9Mg0.1O–ScSZ-based anodes under internal dry reforming of simulated biogas mixtures , 2008 .

[4]  Manoj Pillai,et al.  Stability and coking of direct-methane solid oxide fuel cells: Effect of CO2 and air additions , 2010 .

[5]  Feridun Hamdullahpur,et al.  Effects of Fuel Processing Methods on Industrial Scale Biogas-Fuelled Solid Oxide Fuel Cell System for Operating in Wastewater Treatment Plants , 2010 .

[6]  Fabrizio Scarpa,et al.  Biogas purification for MCFC application , 2011 .

[7]  Manfred Bischoff,et al.  Molten carbonate fuel cells: A high temperature fuel cell on the edge to commercialization , 2006 .

[8]  Jan Van herle,et al.  Biogas as a fuel source for SOFC co-generators , 2004 .

[9]  M. Krumbeck,et al.  First European fuel cell installation with anaerobic digester gas in a molten carbonate fuel cell , 2006 .

[10]  M. Romantschuk,et al.  Biogasification of biowaste and sewage sludge--measurement of biogas quality. , 2012, Journal of environmental management.

[11]  R. J. Spiegel,et al.  Test results for fuel cell operation on anaerobic digester gas , 2000 .

[12]  David T. Wickham,et al.  Catalytic steam reforming of methane using Rh supported on Sr-substituted hexaaluminate , 2009 .

[13]  Kevin Kendall,et al.  Cannock landfill gas powering a small tubular solid oxide fuel cell — a case study , 2000 .

[14]  Massoud Kaviany,et al.  Effect of solid conductivity on radiative heat transfer in packed beds , 1994 .

[15]  Marie Petitjean,et al.  SOFC Running on Biogas: Identification and Experimental Validation of "Safe" Operating Conditions , 2009 .

[16]  Kazunari Sasaki,et al.  Poisoning of SOFC anodes by various fuel impurities , 2008 .

[17]  O. Deutschmann,et al.  Steam reforming of hexadecane over a Rh/CeO2 catalyst in microchannels: Experimental and numerical investigation , 2009 .

[18]  K. Sasaki,et al.  Equilibria in Fuel Cell Gases I. Equilibrium Compositions and Reforming Conditions , 2003 .

[19]  Olaf Deutschmann,et al.  Steam reforming of methane, ethane, propane, butane, and natural gas over a rhodium-based catalyst , 2009 .

[20]  N. Sullivan,et al.  Fabrication and evaluation of solid-oxide fuel cell anodes employing reaction-sintered yttria-stabilized zirconia , 2009 .

[21]  J. R. Engel,et al.  Catalytic partial oxidation of methane using RhSr- and Ni-substituted hexaaluminates , 2007 .

[22]  Jonghee Han,et al.  MCFC fed with biogas: Experimental investigation of sulphur poisoning using impedance spectroscopy , 2011 .

[23]  A. Virkar,et al.  Fuel Composition and Diluent Effect on Gas Transport and Performance of Anode-Supported SOFCs , 2003 .