A comparative study of carbon dioxide capture capabilities between methanol solvent and aqueous monoethanol amine solution
- Authors
- Kim, Dong Min; Cho, Jungho
- Issue Date
- Jan-2011
- Publisher
- KOREAN INSTITUTE CHEMICAL ENGINEERS
- Keywords
- CO2 Capture Process; Simulation; Modeling; Thermodynamic Model
- Citation
- KOREAN JOURNAL OF CHEMICAL ENGINEERING, v.28, no.1, pp.22 - 26
- Journal Title
- KOREAN JOURNAL OF CHEMICAL ENGINEERING
- Volume
- 28
- Number
- 1
- Start Page
- 22
- End Page
- 26
- URI
- https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/19960
- DOI
- 10.1007/s11814-010-0419-9
- ISSN
- 0256-1115
- Abstract
- Simulations have been performed to compare the performance of CO2 capture power between 98.5 wt% methanol solvent and 30 wt% MEA aqueous solution. A general purpose chemical process simulator, PRO/II with PROVISION release 8.3 was used for the modeling of CO, capture process. For the simulation of CO, capture process using methanol as a solvent, NRTL liquid activity coefficient model was used for the estimation of the liquid phase non-idealities, Peng-Robinson equation of state model was selected for the prediction of vapor phase non-idealities, and Henry's law option was chosen for the prediction of the solubilities of light gases in methanol and water solvents. Amine special thermodynamic package built-in PRO/II with PROVISION release 8.3 was used for the modeling of CO2 capture process using MEA aqueous solution. We could conclude that the 30 wt% of MEA aqueous solution showed better performance than the 98.5 wt% methanol solvent in CO2 capture capability. Through this study, we tried to compare the differences between the two processes from the aspects of capital and operating costs using a commercial process simulator. This will guide the optimal process design in the carbon dioxide capture process.
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