DC Field | Value | Language |
---|---|---|
dc.contributor.advisor | Hong, Won-Hi | - |
dc.contributor.advisor | 홍원희 | - |
dc.contributor.author | Park, Sung-Youl | - |
dc.contributor.author | 박성열 | - |
dc.date.accessioned | 2011-12-13T01:42:01Z | - |
dc.date.available | 2011-12-13T01:42:01Z | - |
dc.date.issued | 2011 | - |
dc.identifier.uri | http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=466378&flag=dissertation | - |
dc.identifier.uri | http://hdl.handle.net/10203/29113 | - |
dc.description | 학위논문(박사) - 한국과학기술원 : 생명화학공학과, 2011.2, [ x, 98 p. ] | - |
dc.description.abstract | A continuous $CO_2$ capture process using an aqueous $NH_3$ solution was investigated in this study. The experiments of continuous $CO_2$ absorption-desorption were performed using a lab-scale experimental apparatus. In order to find out the optimal operating conditions of continuous $CO_2$ capture process using an aqueous $NH_3$ solution, $CO_2$ removal efficiencies were measured under various operating conditions. The removal efficiencies were proportionally increased as the increase of $NH_3$ concentration but kept steady value above 12 wt\%. The removal efficiencies were also increased as the flow rates of gas and absorbent increase but the effects of these parameters on removal efficiencies were weaker than that of $NH_3$ concentration. As the regeneration temperature increased, the removal efficiencies increased rapidly and kept steady value at above specific temperature which defined as an optimal regeneration temperature. The optimal regeneration temperature were $87^\circ C$ for 15 wt\%, $90^\circ C$ for 12 wt\%, $93^\circ C$ for 9 wt\%, $95^\circ C$ for 6 wt\% and $97^\circ C$ for 3 wt\%. As the regeneration temperature increase, $CO_2$ loadings of both absorbents were changed from rapid decrease to steady value and the increased differences of lean and rich $CO_2$ loadings explained increased $CO_2$ removal efficiencies. Through the continuous $CO_2$ capture experiments, it could found out that the optimal operating conditions were 12 wt\% of $NH_3$ concentration, $90^\circ C$ of regeneration temperature with $CO_2$ loadings kept below 0.4. A method based on mole fractions of vapor components at equilibrium was developed for continuous $CO_2$ capture process. It could be understood that the regeneration of $CO_2$ rich absorbent prefers the condition that the mole fraction of $NH_3$ in vapor phase at equilibrium is larger than that of $CO_2$. The mole fractions of $CO_2$ and $NH_3$ in vapor phase at actual regeneration are opposite to those at equil... | eng |
dc.language | eng | - |
dc.publisher | 한국과학기술원 | - |
dc.subject | desorption | - |
dc.subject | absorption | - |
dc.subject | carbon dioxide | - |
dc.subject | ammonia | - |
dc.subject | regeneration | - |
dc.subject | 재생 | - |
dc.subject | 탈거 | - |
dc.subject | 흡수 | - |
dc.subject | 이산화탄소 | - |
dc.subject | 암모니아 | - |
dc.title | (A) study on a continuous $co_2$ capture process using an aqueous ammonia solution | - |
dc.title.alternative | 암모니아수를 이용한 연속 이산화탄소 포집공정에 관한 연구 | - |
dc.type | Thesis(Ph.D) | - |
dc.identifier.CNRN | 466378/325007 | - |
dc.description.department | 한국과학기술원 : 생명화학공학과, | - |
dc.identifier.uid | 020045829 | - |
dc.contributor.localauthor | Hong, Won-Hi | - |
dc.contributor.localauthor | 홍원희 | - |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.