COMBINED-CYCLE POWER-PLANT WITH INTEGRATED COAL-GASIFICATION, CO SHIFT AND CO2 WASHING

Studies on CO2 removal from coal-fired power stations indicate that ne t efficiencies of 40 % are feasible. About 88 % of very clean CO2 can be bled off in the gaseous or liquid state of aggregation. This can be achieved with IGCC's employing water gas shift and physical absorptio n for CO2 separation or, potentially, H-2/CO2 separation with membrane s and the usual gas cleaning upstream of the gas turbine combustion ch amber. The pre-basic design study is based solely on proven components , known processes and experience gained from the construction of the c ombined cycle power plant components of the IGCC demonstration plants in Europe.