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Language: korean

Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received May 12, 2009
Accepted August 18, 2009

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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알카놀아민 수용액을 이용한 연소배가스 중의 CO2/SO2/NO2 동시 흡수속도에 관한 연구

The Simultaneous Absorption Rate of CO2/SO2/NO2 from Flue Gas with Aqueous Alkanolamine Solutions

서종범 최원준¹ 김재원² 최봉욱³ 오광중^†

Jong-Beom Seo Won-Joon Choi¹ Jae-Won Kim² Bong-Wook Choi³ Kwang-Joong Oh^†

부산대학교 환경공학과, 609-735 부산시 금정구 장전동 산30 ¹한국에너지기술연구원 온실가스연구센터, 305-343 대전시 유성구 장동 71-2 ²동국제강(주), 135-280 서울 강남구 테헤란로 412 ³울산광역시 상수도사업본부, 689-862 울산광역시 울주군 청량면 동천리 529

Department of Environmental Engineering, Pusan National University, 30 Jangjeon-dong, Geumjeong-gu, Busan 609-735, Korea ¹Greenhouse Gas Research Center, Korea Institute of Energy Research, 71-2 Jang-dong, Yuseong-gu, Daejeon 305-343, Korea ²Dong Kuk Steel Mill Co., Ltd., Union steel building 412 Teherallo Kang-nam gu, Seoul 135-280, Korea ³Water Quality Institute of Ulsan Metropolitan, 529 Dong Cheon-li, Cheongnyang-myeon, Ulju-gun, Ulsan 689-862, Korea

kjoh@pusan.ac.kr

Korean Chemical Engineering Research, October 2009, 47(5), 639-645(7), NONE Epub 5 November 2009

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Abstract

알카놀아민흡수제에 대한 CO2/SO2/NO2의 흡수속도를 살펴보기 위해 현재 널리 사용되는 흡수제인 2-amino-2-methyl-1-propanol(AMP)와 monoethanolamine(MEA)를 비교하기 위하여 평면교반조에서 CO2/SO2/NO2의 흡수속도실험을 수행하여 흡수속도와 반응속도상수를 구하였다. 반응속도상수는 실험값으로부터 구할 수 있으며 실험은 다양한 실험조건에서 수행되었다. 각각의 흡수제에 대하여 3, 5, 10 wt.%으로 농도가 증가함에 따라 흡수속도는 AMP와 MEA AMP가 MEA에 비해서 약 14~20% 높은 것으로 나타났다. CO2, SO2 그리고 NO2는 각각의 영역에서 기-액 접촉계면을 통해 액상으로 전달되는 기체의 확산속도와 액상 내에서 일어나는 반응속도의 상대적 크기에 따른 흡수속도를 예측할 수 있다. 또한 CO2 흡수공정에 있어서 일정분압 이상의 SO2와 NO2는 CO2 흡수속도 및 흡수용량에 영향이 있기 때문에 흡수탑으로 유입되기 전 복합가스의 분압조정이 반드시 필요할 것으로 판단된다.

In this study, alkanolamine was used to achieve high absorption rates for CO2 as suggested at several literatures. The absorption rates of aqueous AMP and MEA solutions with CO2, SO2, NO2 were measured using a stirredcell reactor. The reaction rate constants were determined from the measured absorption rates. The performances were evaluated under various operating conditions. As a result, the reactions with SO2, NO2 into aqueous AMP and MEA solutions were classified as an instantaneous reaction respectively. The absorption rates increased with increase of the reaction temperature and the concentration of absorbents. The simultaneous absorption rate of CO2/SO2/NO2 into 3, 5, 10 wt.% MEA at various pressure of CO2/SO2/NO2, was more increased 14~20% than AMP solution. We investigated the effect of SO2 and NO2 on the simultaneous absorption of CO2/SO2/NO2 from a flue gas. The performances were evaluated_x000D_ under various operating conditions in order to investigate the absorption characteristic.

Keywords

Carbon Dioxide Sulfer Dioxide Nitrogen Dioxide Simultaneous Absorption 2-amino-2-methyl-1-propanol Ammonia Monoethanolamine Monoethanolamine

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