A Comparative study of SOEC and Co-SOEC for a Combined Power-to-Gas System

Shahid Ali, Richard Schauperl, Kim Sørensen, Mads Pagh Nielsen

Research output: Contribution to conference without publisher/journalPaper without publisher/journalResearchpeer-review

Abstract

Power-to-Gas is an efficient way to use the existing natural gas infrastructure to store renewable electricity. Solid Oxide Electrolysis (SOEC) technology has the potential to achieve better efficiency by integrating it with a CO2 source for synthetic fuel production e.g. SNG, methanol, DME etc. There could be an advantage in combining these processes as one is highly exothermic while the other is heat demanding. Another advantage of using SOEC is that it can be used for CO2/H2O co-electrolysis, which could be an interesting choice for producing syngas at high temperature for further fuel conversion. In this study the Aspen plus simulator is used for both component and system modelling.

The comparative analysis showed that more heat 0.81 kW is available for CO2/H2O co-electrolysis based system compared to 0.51 kW for steam electrolysis while the overall efficiency ~75% and final product composition remains the same for both systems.
Original languageEnglish
Publication dateOct 2019
Number of pages9
Publication statusPublished - Oct 2019
Event14th Conference on Sustainable Development of Energy, Water and Environment Systems - Dubrovnik, Croatia
Duration: 1 Oct 20196 Oct 2019

Conference

Conference14th Conference on Sustainable Development of Energy, Water and Environment Systems
CountryCroatia
CityDubrovnik
Period01/10/201906/10/2019

Keywords

  • Electrolysis
  • Co-Electrolysis
  • Methane
  • Process Modeling
  • Aspen plus
  • Energy storage

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    Ali, S., Schauperl, R., Sørensen, K., & Nielsen, M. P. (2019). A Comparative study of SOEC and Co-SOEC for a Combined Power-to-Gas System. Paper presented at 14th Conference on Sustainable Development of Energy, Water and Environment Systems, Dubrovnik, Croatia.