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Economical and Environmental Study on SNG Combined Cycle Integrated with CCS for Large-Scale Reduction of CO2 (Based on NETL Report)

대용량 CO2 감축을 위한 CCS 연계 SNGCC의 경제성 및 환경성에 대한 연구(NETL 보고서를 중심으로)

  • 서동균 (한국전력공사 석탄가스화사업실) ;
  • 권원순 (한국외국어대학교 경제학과)
  • Received : 2015.10.14
  • Accepted : 2015.10.30
  • Published : 2015.10.30

Abstract

Recently the Korean government announced its decision to select the $3^{rd}$ proposal, which targets reducing $CO_2$ by 37% of the BAU level by 2030, for the Intended Nationally Determined Contribution (INDC). According to this proposal, natural gas (or equivalent gas) combined cycle (NGCC) are suggested as alternatives for conventional pulverized coal (PC). In this study, we analyzed the environmental, economic, and energy mixing aspects of synthetic natural gas combined cycle(SNGCC) using NETL material (2011~2012 version) and other domestic materials (2014 version). We found the following conclusions: 1) Considering carbon capture and storage (CCS) integration, $CO_2$ emission factors of SNGCC and supercritical PC are the same. However, 60% of $CO_2$ from SNGCC is produced as high pressure and high purity (99%) gas, making it highly suitable for CCS, which is now strongly supported by the government. 2) Based on the economic analysis for SNGCC using domestic materials and comparison with NGCC, it was found that the settlement price of SNGCC was 30% lower than that of NGCC.

Keywords

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