한국가스학회지 (Journal of the Korean Institute of Gas)

  • 제5권4호
  • /
  • Pages.27-32
  • /
  • 2001
  • /
  • 1226-8402(pISSN)
  • /
  • 2713-6922(eISSN)
한국가스학회 (The Korean Institute of GAS)
권호 표지

고온에서의 이산화탄소 흡착을 위한 흡착제 CaO 제조

CaO Manufacture for $CO_2$ Adsorption at a High Temperature

  • Lee Tae-Jong (Dept. of Chem. Eng. Kyungpook National University) ;
  • Kim Gil-Soo (Dept. of Chem. Eng. Kyungpook National University) ;
  • Baek Il-Hyun (Korea Institute of Energy Research) ;
  • Kim Bu-Ung (Dept. of Chem. Eng. Pusan National University)
  • 발행 : 2001.12.01
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초록

온실효과의 주요 원인 물질인 이산화탄소를 고온$\cdot$고압에서 제거하기 위한 CaO 흡착제를 제조하였다. 흡착제는 석회석을 고압성형과 소성을 이용하여 제조하여 그 물성을 조사하고 회분식 흡착용기에서 흡착실험을 수행하였다. 세공면적은 성형압력으로 결정되며 세공분포는 이분산 형태를 갖는다. CaO의 $CO_2$ 흡착은 화학흡착이며 최대전환율은 $700^{\circ}C$에서 $80\%$에 근접한다.

It is desired that carbon dioxide causing a greenhouse effect be removed at a high temperature and high pressure in a steam reforming reaction. In this research, a pellet form of adsorbent CaO is employed to capture $CO_2$. The adsorbent was manufactured using a high pressure molding on powdered $CaCO_3$ followed by calcination. Then its properties were analyzed and the adsorption experiments were carried out in a batch adsorption chamber. The pore area was found to be dependent on a molding pressure and the pore distribution showed two peaks. It is examined that $CO_2$ binds to CaO by means of chemisorption and its maximum conversion is nearly $80\%$ at $700^{\circ}C$.

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