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>> In this paper, performance of the gas turbine combined cycle(GTCC) using pre-combustion carbon capture technology was comparatively analysed. Steam reforming and autothermal reforming were used. In the latter, two different methods were adopted to supply oxygen for the reforming process. One is to extract air form gas turbine compressor (air blowing) and the other is to supply oxygen directly from air separation unit (O2 blowing). To separate CO2 from the reformed gas, the chemical absorption system using MEA solution was used. The net cycle efficiency of the system adopting O2 blown autothermal reforming was higher than the other two systems. The system using air blown autothermal reforming exhibited the largest net cycle power output. In addition to the performance analysis, the influence of fuel reforming and carbon capture on the operating condition of the gas turbine and the necessity of turbine re-design were investigated.

Effect of Carbon Capture Using Pre-combustion Technology on the Performance of Gas Turbine Combined Cycle