Korean Chemical Engineering Research

The Korean Institute of Chemical Engineers (한국화학공학회)
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Recent Research Trends on Separation of CO2 Emitted From Steelmaking Process using Gas Hydrate Technology

가스 하이드레이트 형성 원리를 이용한 철강공정 배기가스 중 CO2 분리기술에 대한 최근 연구 동향

  • Lee, Bo Ram (Department of Chemical Engineering, Pohang University of Science and Technology) ;
  • Ryu, Jun-Hyung (Department of Energy & Environmental Systems, Dongguk University) ;
  • Han, Kunwoo (Research Institute of industrial Science & Technology) ;
  • Park, Da-Hye (Department of Chemical Engineering, Pohang University of Science and Technology) ;
  • Lee, Kun-Hong (Department of Chemical Engineering, Pohang University of Science and Technology) ;
  • Lee, In-Beum (Department of Chemical Engineering, Pohang University of Science and Technology)
  • 이보람 (포항공대 화학공학과) ;
  • 류준형 (동국대학교 에너지환경시스템학부) ;
  • 한건우 (포항산업과학연구원) ;
  • 박다혜 (포항공대 화학공학과) ;
  • 이건홍 (포항공대 화학공학과) ;
  • 이인범 (포항공대 화학공학과)
  • Received : 2009.11.10
  • Accepted : 2009.12.22
  • Published : 2010.04.30
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Abstract

Gas hydrates are crystalline solids composed of water and gas molecules. Water molecules are linked through hydrogen bonding and create cavities(host lattice) that can capture a large variety of guest molecules under appropriate conditions, generally high pressure and low temperature. Recently, many researchers try to apply gas hydrates to industrial processes to capture greenhouse gases due to the facts that the process is eco-friendly and target gas molecules can be preferentially captured. In this paper, we introduced recent studies on $CO_2$ and $CO_2-N_2$ mixture hydrates to evaluate the feasibility of industrial application of gas hydrate technology to $CO_2$ capture process. Specifically, we put emphasis on the technical feasibility of $CO_2$ separation in steel industry using gas hydrate formation principles.

가스 하이드레이트는 고압과 저온 조건에서 객체분자(guest molecule)인 저 분자량의 가스와 주체분자(host molecule)인 물 분자가 결합하여 고체상으로 형성된 화합물을 일컫는다. 물과 가스에 의해서 형성이 된다는 점, 포집 가스의 종류에 따라 다양한 결정구조가 형성되며 선택적으로 가스를 포획할 수 있는 장점으로 인하여 이를 지구온난화 가스 저감을 위한 산업공정에 활용하는 연구가 최근 활발히 진행되고 있다. 본 논문에서는 $CO_2$ 또는 $CO_2-N_2$ 하이드레이트에 관한 전반적인 최근 연구 동향을 파악하여 이를 실제 산업 현장에 적용하는 경우에 대한 기술적 가능성을 모색해 본다. 특히 대규모 $CO_2$가 배출되면서도 이에 해당하는 연구가 활발히 진행되지 않았던 제철 공정에 대한 적용성을 중점적으로 검토하였다.

Keywords

References

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