Journal of the Korea Academia-Industrial cooperation Society (한국산학기술학회논문지)

The Korea Academia-Industrial cooperation Society (한국산학기술학회)
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Carbon dioxide absorption characteristics according to amine mixtures with different order

급수가 다른 아민 혼합에 따른 이산화탄소 흡수 특성

  • Choi, Soo-Hyun (Greenhouse Gas Research Center, Korea Institute of Energy Research) ;
  • You, Jong-Kyun (Greenhouse Gas Research Center, Korea Institute of Energy Research) ;
  • Park, Ki-Tae (Greenhouse Gas Research Center, Korea Institute of Energy Research) ;
  • Baek, Il-Hyun (Greenhouse Gas Research Center, Korea Institute of Energy Research) ;
  • Park, So-Jin (Department of Chemical Engineering, Chungnam National University)
  • 최수현 (한국에너지기술연구원 온실가스연구단) ;
  • 유정균 (한국에너지기술연구원 온실가스연구단) ;
  • 박기태 (한국에너지기술연구원 온실가스연구단) ;
  • 백일현 (한국에너지기술연구원 온실가스연구단) ;
  • 박소진 (충남대학교 화학공학과)
  • Received : 2013.08.10
  • Accepted : 2013.09.06
  • Published : 2013.09.30
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Abstract

The advanced absorbent that used amine mixture with different order were developed to separate carbon dioxide emitted from fossil fuel power plant. The carbon dioxide absorption capacity for mixtures with different amine(primary, secondary and tertiary) were investigated according to $CO_2$ partial pressure. The carbon dioxide absorption capacity at the same pressure is ordered as 3DMA1P 30wt%>3DMA1P 27wt%+MEA 3wt%>3DMA1P 27wt%+DEA 3wt%. The result indicates that mixing tertiary amine with primary amine yields more efficient carbon dioxide absorbent than mixing tertiary with secondary amine does. Finally, the predicted semi-empirical gas-liquid equilibrium model fitted with experimental results.

화력발전소로부터 배출되는 이산화탄소를 분리하기 위하여 급수가 다른 아민을 혼합한 개선 흡수제를 개발하고자 하였다. 급수가 다른 1, 2, 3급 아민을 혼합한 후 이산화탄소 부분압에 따른 이산화탄소 흡수능을 조사하였다. 동일한 압력에서 이산화탄소 흡수능은 3DMA1P 30wt%>3DMA1P 27wt%+MEA 3wt%>3DMA1P 27wt%+DEA 3wt% 순으로 나타내었으며, 이는 3급인 3DMA1P에 2급인 DEA보다는 1급인 MEA를 혼합하는 것이 우수한 흡수능을 보이고 있다. 따라서 흡수능이 우수한 3급 아민에 흡수속도를 높이기 위하여 1급 아민을 혼합하는 것이 유리함을 알 수 있다. 최종적으로 준경험 기액 평형모델을 이용하여 실험 결과를 계산한 결과 실험치와 잘 일치하였다.

Keywords

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