A comparison of the process integration of shockwave CO₂ compression with conventional turbo machinery into PCC power station design

This paper discusses the energy penalty of solvent based post combustion capture for three different power stations and includes a comparison of shockwave CO₂ compression versus conventional turbo machinery on the energy penalty associated with carbon capture and storage. This study uses pinch analysis to determine targets for the energy penalty of three different power stations that include a brown coal power plant with no reheat stage, a more efficient brown coal power station and a black coal power station. Heat integration can be used to reduce the energy penalty of all power stations combined with CCS. It is also found that when heat integration is considered, the heat that can be recovered in shockwave compressor inter/after-coolers reduces the amount of steam that needs to be extracted from the steam turbine. Hence, the net power output from the power station will be higher when shockwave compressors are used for CO₂ compression compared to conventional turbo-machinery.