The KSFM Journal of Fluid Machinery (한국유체기계학회 논문집)

Korean Society for Fluid machinery (한국유체기계학회)
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Analysis of the Influence of CO2 Capture on the Performance of IGCC Plants

가스화 복합화력발전 플랜트에서 CO2제거가 성능에 미치는 영향 해석

  • 차규상 (인하대학교 대학원 기계공학과) ;
  • 김영식 (인하대학교 대학원 기계공학과) ;
  • 이종준 (인하대학교 대학원 기계공학과) ;
  • 김동섭 (인하대학교 기계공학부) ;
  • 손정락 (서울대학교 항공우주공학부) ;
  • 주용진 (한국 전력연구원)
  • Published : 2010.02.01
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Abstract

In the power generation industry, various efforts are needed to cope with tightening regulation on carbon dioxide emission. Integrated gasification combined cycle (IGCC) is a relatively environmentally friendly power generation method using coal. Moreover, pre-combustion $CO_2$ capture is possible in the IGCC system. Therefore, much effort is being made to develop advanced IGCC systems. However, removal of $CO_2$ prior to the gas turbine may affect the system performance and operation because the fuel flow, which is supplied to the gas turbine, is reduced in comparison with normal IGCC plants. This study predicts, through a parametric analysis, system performances of both an IGCC plant using normal syngas and a plant with $CO_2$ capture. Performance characteristics are compared and influence of $CO_2$ capture is discussed. By removing $CO_2$ from the syngas, the heating value of the fuel increases, and thus the required fuel flow to the gas turbine is reduced. The resulting reduction in turbine flow lowers the compressor pressure ratio, which alleviates the compressor surge problem. The performance of the bottoming cycle is not influenced much.

Keywords

References

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