An update of the benchmark post-combustion CO2-capture technology

This study provides a description of a new benchmark post-combustion CO2 capture (PCC) technology reflecting the publicly reported performances by various technology suppliers. To achieve this several amines and amine formulations have been considered using a process model developed in ProTreat (R). A 40 wt% formulation of PZ (piperazine)/AMP (amino-methyl-propanol) in a 1:2 M ratio was selected as the most representative of the current state of the art. A PCC process configuration with absorber intercooling and rich split flow was selected to reflect the fact that the technology suppliers use a variety of process designs to optimize the process performance. The techno-economic performances were further detailed for the PCC process integrated with an ultra-supercritical coal fired power station and a natural gas fired combined-cycle. The techno-economic evaluation of the PCC process indicated that the costs of capture with respect to 30 wt% MEA for the coal-fired power station were reduced by 22% and for the natural gas fired combined-cycle by 15%.