Numerical study on biogas refining system combined with proton-conducting solid oxide electrolyzer

Y. Tachikawa, Y. Matsuzaki, Y. Kawabata, S. Taniguchi, K. Sasaki

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

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.

Original languageEnglish
Title of host publication17th International Symposium on Solid Oxide Fuel Cells, SOFC 2021
PublisherIOP Publishing Ltd.
Pages845-851
Number of pages7
Edition1
ISBN (Electronic)9781607685395
DOIs
Publication statusPublished - 2021
Event17th International Symposium on Solid Oxide Fuel Cells, SOFC 2021 - Stockholm, Sweden
Duration: Jul 18 2021Jul 23 2021

Publication series

NameECS Transactions
Number1
Volume103
ISSN (Print)1938-6737
ISSN (Electronic)1938-5862

Conference

Conference17th International Symposium on Solid Oxide Fuel Cells, SOFC 2021
Country/TerritorySweden
CityStockholm
Period7/18/217/23/21

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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