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Received October 13, 2006
Accepted November 24, 2006
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입체장애아민 AMP (2-amino 2-methyl 1-propanol) 수용액의 CO2 흡수평형
Absorption Equilibrium of CO2 in the Sterical Hindered Amine, AMP Aqueous Solution
한국에너지기술연구원 온실가스연구센터, 305-343 대전시 유성구 장동 71-2
Greenhouse Gas Research Center, Korea Institute of Energy Research, 71-2, Jang-dong, Yuseong-gu, Daejeon 305-343, Korea
heehan@kier.re.kr
Korean Chemical Engineering Research, April 2007, 45(2), 197-202(6), NONE Epub 7 May 2007
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Abstract
본 연구는 그 동안 주로 석유화학의 개질공정 등에서 적용되었던 이산화탄소 흡수분리기술을 연소배가스에 적용하기 위한 기본적인 연구로서, 이산화탄소의 흡수분리공정에 일반적으로 많이 사용되는 흡수제인 MEA(mono-ethanol amine)를 연소배가스에 적용하였을 경우 예상되는 열화, 재생에너지 및 흡수능력 등의 문제점을 개선하기 위하여 거론되는 입체장애아민인 AMP(2-amino 2-methyl 1-propanol) 수용액과 이산화탄소와의 흡수평형 특성을 비교 평가하였다. 실험결과 AMP는 MEA에 비하여 이산화탄소의 흡수능력이 반응 메카니즘에 의하여 약 2배 정도 증가함을 확인하였고, 연소배가스와 같은 저농도 이산화탄소 흡수분리공정 설계에 필요한 흡수평형자료를 부분적으로 제시하였다.
This research was basically carried out to extend the application of CO2 absorption processes for flue-gas system, which are mainly applied to a reforming process in petro-chemical industries. In general, MEA absorbent has some problems in flue-gas treatment, such as, degradation, regeneration energy and absorption capacities. As we known, sterical hindered amine, typically AMP (2-amino 2-methyl 1-propanol), have a good potential to improve these problems. In this paper, the characteristics of CO2 absorption in aqueous AMP solution were measured and compared with that of MEA. It has been found that the CO2 absorption capacity in AMP is double than that of MEA in the low CO2 partial pressure system such as flue-gas. Also, the equilibriums of CO2-AMP system were partially suggested, which are essentially needed to design the absorption process.
Keywords
References
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Caplow M, J. Am. Chem. Eng. Soc., 90(24), 6795 (1968)
Danckwerts PV, Chem. Eng. Sci., 34(4), 443 (1979)
Hook RJ, Ind. Eng. Chem. Res., 36(5), 1779 (1997)
Blauwhoff PMM, Versteeg GF, Van Swaaij WP, Chem. Eng. Sci., 38(9), 1411 (1983)
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