TY - GEN
T1 - Numerical study on biogas refining system combined with proton-conducting solid oxide electrolyzer
AU - Tachikawa, Y.
AU - Matsuzaki, Y.
AU - Kawabata, Y.
AU - Taniguchi, S.
AU - Sasaki, K.
N1 - Funding Information:
This research is supported by The Japan Science and Technology Agency (JST) through its “Center of Innovation Program” (COI Program) JPMJCE1318.
Publisher Copyright:
© 2021 Electrochemical Society Inc.. All rights reserved.
PY - 2021
Y1 - 2021
N2 - Biogas refining system including methanation reactor and protonconducting electrolysis cell has been proposed and investigated based on the simulation including mass and heat balance analysis. Based on the calculation results, carbon deposition was predicted to still occur at the cathode outlet even with the gas humidification when a conventional oxide-ion conducting electrolyte is applied to the electrolysis cell due to the enhanced carbon activity caused by oxide-ion transport from the cathode to the anode. In the case of the proton-conducting electrolyte applied solid oxide electrolysis cell, proton transport from the anode to the cathode was found to mainly promote reverse water-gas shift reaction and methanation reaction without any carbon deposition. Even though the calculation results should be verified by comparing with experimental results, the numerical study suggested that the biogas refining system combined with p-SOEC is a promising technology for generating carbonneutral methane with a strongly suppressed risk of carbon deposition.
AB - Biogas refining system including methanation reactor and protonconducting electrolysis cell has been proposed and investigated based on the simulation including mass and heat balance analysis. Based on the calculation results, carbon deposition was predicted to still occur at the cathode outlet even with the gas humidification when a conventional oxide-ion conducting electrolyte is applied to the electrolysis cell due to the enhanced carbon activity caused by oxide-ion transport from the cathode to the anode. In the case of the proton-conducting electrolyte applied solid oxide electrolysis cell, proton transport from the anode to the cathode was found to mainly promote reverse water-gas shift reaction and methanation reaction without any carbon deposition. Even though the calculation results should be verified by comparing with experimental results, the numerical study suggested that the biogas refining system combined with p-SOEC is a promising technology for generating carbonneutral methane with a strongly suppressed risk of carbon deposition.
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U2 - 10.1149/10301.0845ecst
DO - 10.1149/10301.0845ecst
M3 - Conference contribution
AN - SCOPUS:85111668492
T3 - ECS Transactions
SP - 845
EP - 851
BT - 17th International Symposium on Solid Oxide Fuel Cells, SOFC 2021
PB - IOP Publishing Ltd.
T2 - 17th International Symposium on Solid Oxide Fuel Cells, SOFC 2021
Y2 - 18 July 2021 through 23 July 2021
ER -