Journal of Energy Engineering (에너지공학)

The Korean Society for Energy (한국에너지학회)
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Absorption Properties of $CO_2$ in Aqueous Solutions of Piperazine, Piperidine, Cyclohexylamine

Piperazine, Piperidine, Cyclohexylamine 수용액에 대한 이산화탄소의 흡수특성

  • Song Ho-Jun (Department of Chemical Engineering, Yonsei University) ;
  • Lee Seoungmoon (Department of Chemical Engineering, Yonsei University) ;
  • Song Hocheol (Department of Chemical Engineering, Yonsei University) ;
  • Ahn Se-Woong (Department of Chemical Engineering, Yonsei University) ;
  • Park Jin-won (Department of Chemical Engineering, Yonsei University)
  • Published : 2005.12.01
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Abstract

for the removal of carbon dioxide in flue gas, which is the main cause of the global warming, chemical absorption methods were widely used for years. Alkanolamines such as MEA, AMP, MDEA are mainly used as an absorbent. In this study, cyclic amines - Piperazine, Piperidine and Cyclohelylamine are investigated to compare the chemical solubilities, absorption capacities and rate ot reaction. In conclusion, Piperazine is the most effective absorbent of $CO_2$ and ran be the excellent alternative to the former absorbents. Experiments were performed at 5, 10, 15 weight percent, 30, 40, $50^{\circ}C$, and the gas solubilities are determined by back-titration method, and using Gas Chromatography the absorption rate was compared.

지구온난화의 주원인인 이산화탄소를 배가스에서 제거하는데 있어 화학적 흡수법은 다년간 광범위하게 응용되어오고 있으며, 주로 MEA(monoethanolamine), AMF(2-amino-2-methyl-1-propanol), MDEA(N-methyldiethanolamine)와 같은 알칸올아민계열의 물질들이 흡수제로 사용되고 있다. 본 연구에서는 환형아민계열의 Piperazine, Piperidine, Cyclohexylamine을 앞서 언급한 물질들을 대체할 새로운 흡수제 후보로 선정하여, 상용화된 MEA를 대상으로 용해도($CO_2$ loading)와 흡수능(loading capacity) 및 반응속도를 비교하였는데, Piperazine이 최적의 흡수제임을 알 수 있었다. 실험은 질량 기준으로 5, 10, $15\%$ 농도, 30, 40, $50^{\circ}C$ 온도에서 수행하였고, 재적정법으로 반응 종료 후 액체 시료 내 이산화탄소의 용해도를 분석하였으며 가스 크로마토그래프 분석을 통해 반응속도를 비교할 수 있었다.

Keywords

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