Alkanolamine계 수용액을 이용한 이산화탄소 흡수에 관한 연구

A Study on the Absorption of $CO_2$Using Alkanolamine Solution

  • 이성남 (연세대학교 화학공학과 환경공학연구실) ;
  • 송호철 (연세대학교 화학공학과 환경공학연구실) ;
  • 현재휴 (연세대학교 화학공학과 환경공학연구실) ;
  • 박진원 (연세대학교 화학공학과 환경공학연구실)
  • 발행 : 2001.10.01

초록

In this study, the absorption kinetics of $CO_2$onto a mixture of AMP (2-amino-2-methyl-1-propanol) MEA (monoethanolamine) water were investigated at 30 and 4$0^{\circ}C$ using a packed absorption tower. Solubility and absorption rate of $CO_2$into alkanolamine solutions and optimal condition of $CO_2$absorption process were investigated. The experimental conditions are as follows; temperature of 30 and 4$0^{\circ}C$, gas flow rate of 3ι/min for the absorption tower, and liquid flow rate of 0.1ι/min. Feed gas was a mixture of 85% $N_2$and 15% $CO_2$. The experimental results showed that AMP had greater solubilities and faster absorption rates than MEA and DEA. In addition, MEA had the fastest initial reaction rate. To improve the properties of AMP which have low initial reaction rate and high cost, AMP was used with MEA. The mixing ratio was also changed in constant total molarity of 1,2,3 and 4. The experimental results can be summarized as follows: (1) in solubility experiment, the addition of MEA in constant total polarity decreased the solubility of $CO_2$in AMP/MEA mixture. (2) from 0 to about 0.3 in mixing ratio, the solubility of $CO_2$in AMP/MEA mixture had little differences compared with the sum of solubility of AMP only and solubility of MEA only . (3) mixing ratio of 0.3 was found to be an optimal point with the fastest $CO_2$absorption rate.

키워드

참고문헌

  1. 연세대학교 화학공학과 석사학위논문 화학흡수법에 의한 연소폐가스 중 지구온난화 가스 CO₂분리에 관한 연구 안성우
  2. 정책연구자료 장기 이산화탄소 배출증가 원인 분석 에너지경제연구원
  3. 연세대학교 화학공학과 석사학위논문 충전탈거탑을 이용한 MEA 수용액으로부터 이산화탄소의 탈거에 관한 연구 엄문호
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