PGE/REWE 2015

Sessions Speakers Exhibitors Products Press Releases Show Specials Floor Plan

Piloting of Siemens Postcap Technology, 9,000 hours operational experience including Mongstad Technology Qualification Program (Room D203, Elicium, Second Floor)

Post combustion CO2-capture based on chemical absorption and desorption is the preferred method to reduce carbon dioxide emissions from coal or gas fired power plants especially with regards to revamp options at existing plants. Before implementation at full scale the technology has to be thoroughly tested and verified at pilot plants to mitigate risk exposure. While most of the available technologies are based on amines as a solvent, Siemens has chosen an aqueous amino acid salt solution and developed the Siemens PostCap™ process. The process and solvent performance were investigated in detail as well in laboratory as in a pilot plant. The paper summarizes the operational experiences at the PostCap™ carbon capture pilot plant at E.ONs Staudinger power plant near Hanau/Germany. The pilot plant started operation in 2009 and the process was tested for three years using a slip stream from the flue gas of the coal fired power plant. During the first three years of operation the process and its technical features were proven and further optimized. In 2012 a gas burner was installed as an alternative source for CO2 and the pilot plant was operated approximately 3.500 h on a flue gas composition equal to a gas turbine power plant. In this period of time a Technology Qualification Program (TQP) for the Carbon Capture Mongstad project in Norway was completed together with Statoil/Gassnova to prove the maturity for a full scale implementation. Key criteria for the TQP were the validation of the process model, verification of specific thermal optimization concepts and supporting technologies, reclaiming technology, materials performance and the effectiveness of the demisting technology. Finally the results will be interpreted with regards to the scalability of the technology into a full scale application.