Integrating a SOFC Plant with a Steam Turbine Plant

Masoud Rokni, Fabio Scappin

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Abstract

A Solid Oxide Fuel Cell (SOFC) is integrated with a Steam Turbine (ST) cycle. Different hybrid configurations are studied. The fuel for the plants is assumed to be natural gas (NG). Since the NG cannot be sent to the anode side of the SOFC directly, a desulfurization reactor is used to remove the sulfur content in the NG and afterwards a pre-reformer break down the heavier hydrocarbons. Both ASR (Adiabatic Steam Reformer) and CPO (Catalytic Partial Oxidation) fuel reformer reactors are considered in this study. The gases from the SOFC stacks enter into a burner to burn the rest of the fuel. The off-gases after the burner are now used to generate steam in a Heat Recovery Steam Generator (HRSG). The generated steam is expanded in a ST to produce additional power. Different systems layouts are considered. Cyclic efficiencies up to 67% are achieved which is considerably higher than the conventional combined cycles (CC).
Original languageEnglish
Title of host publicationEnergy Solutions for CO2 Emission Peak and Subsequent Decline
EditorsLeif Sønderberg Petersen, Hans Larsen
Number of pages300
Place of PublicationRisø National Laboratory
PublisherDanmarks Tekniske Universitet, Risø Nationallaboratoriet for Bæredygtig Energi
Publication date2009
Pages300-311
ISBN (Print)978-87-550-3783-0
Publication statusPublished - 2009
EventRisø International Energy Conference 2009 - Risø DTU, Roskilde, Denmark
Duration: 14 Sep 200916 Sep 2009

Conference

ConferenceRisø International Energy Conference 2009
LocationRisø DTU
CountryDenmark
CityRoskilde
Period14/09/200916/09/2009
SeriesDenmark. Forskningscenter Risoe. Risoe-R
Number1712(EN)
ISSN0106-2840

Keywords

  • CPO
  • Hybrid system
  • ASR
  • Rankine cycle
  • Recuperating
  • Steam plant
  • Steam cycle
  • SOFC
  • Risø-R-1712
  • Risø-R-1712(EN)

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