Transactions of the Korean hydrogen and new energy society (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Comparison of Quench Methods in The Coal Gasification System with Carbon Capture

CO2 포집을 포함한 석탄 가스화 시스템에서 급냉 방법에 따른 비교

  • Lee, Joong-Won (Technology Commercialization Office, KEPCO Research Institute) ;
  • Kim, Ui-Sik (Technology Commercialization Office, KEPCO Research Institute) ;
  • Ko, Kyung-Ho (Technology Commercialization Office, KEPCO Research Institute) ;
  • Chung, Jae-Hwa (Technology Commercialization Office, KEPCO Research Institute) ;
  • Hong, Jin-Pyo (Technology Commercialization Office, KEPCO Research Institute)
  • 이중원 (한국전력공사 전력연구원 사업화기술개발실) ;
  • 김의식 (한국전력공사 전력연구원 사업화기술개발실) ;
  • 고경호 (한국전력공사 전력연구원 사업화기술개발실) ;
  • 정재화 (한국전력공사 전력연구원 사업화기술개발실) ;
  • 홍진표 (한국전력공사 전력연구원 사업화기술개발실)
  • Received : 2012.04.04
  • Accepted : 2012.06.22
  • Published : 2012.06.30
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Abstract

The integrated gasification combined cycle (IGCC) system is well known for its high efficiency compared with that of other coal fueled power generation system. IGCC offers substantial advantages over pulverized coal combustion when carbon capture and storage (CCS) is required. Commercial plants employ different types of quenching system to meet the purpose of the system. Depending on that, the downstream units of IGCC can be modeled using different operating conditions and units. In case with $CO_2$ separation and capture, the gasifier product must be converted to hydrogen-rich syngas using Water Gas Shift (WGS) reaction. In most WGS processes, the water gas shift reactor is the biggest and heaviest component because the reaction is relatively slow compared to the other reactions and is inhibited at higher temperatures by thermodynamics. In this study, tehchno-econimic assessments were found according to the quench types and operating conditions in the WGS system. These results can improve the efficiency and reduce the cost of coal gasification.

Keywords

References

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Cited by

  1. Effect of Operating Pressure on the Heat Transfer and Particle Flow Characteristics in the Syngas Quench System of an IGCC Process vol.25, pp.1, 2014, https://doi.org/10.7316/KHNES.2014.25.1.097