Mass Transfer Correlation and Optimization of Carbon Dioxide Capture in a Microchannel Contactor: A Case of CO 2 -Rich Gas

Nattee Akkarawatkhoosith, Wannarak Nopcharoenkul, Amaraporn Kaewchada and Attasak Jaree
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Nattee Akkarawatkhoosith: Department of Chemical Engineering, Faculty of Engineering, Mahidol University, 25/25 Phuttamonthon 4 Road, Nakhon Pathom 73170, Thailand
Wannarak Nopcharoenkul: Department of Agro-Industrial, Food and Environmental Technology, King Mongkut’s University of Technology North Bangkok, Pracharat 1 Road, Wongsawang, Bansue, Bangkok 10800, Thailand
Amaraporn Kaewchada: Department of Agro-Industrial, Food and Environmental Technology, King Mongkut’s University of Technology North Bangkok, Pracharat 1 Road, Wongsawang, Bansue, Bangkok 10800, Thailand
Attasak Jaree: Department of Chemical Engineering, Faculty of Engineering, Kasetsart University, Chatuchak, Bangkok 10900, Thailand

Energies, 2020, vol. 13, issue 20, 1-15

Abstract: This work focused on the application of a microchannel contactor for CO 2 capture using water as absorbent, especially for the application of CO 2 -rich gas. The influence of operating conditions (temperature, volumetric flow rate of gas and liquid, and CO 2 concentration) on the absorption efficiency and the overall liquid-side volumetric mass transfer coefficient was presented in terms of the main effects and interactions based on the factorial design of experiments. It was found that 70.9% of CO 2 capture was achieved under the operating conditions as follows; temperature of 50 °C, CO 2 inlet fraction of 53.7%, total gas volumetric flow rate of 150 mL min −1 , and adsorbent volumetric flow rate of 1 mL min −1 . Outstanding performance of CO 2 capture was demonstrated with the overall liquid-side volumetric mass transfer coefficient of 0.26 s −1 . Further enhancing the system by using 2.2 M of monoethanolamine in water (1:1 molar ratio of MEA-to-CO 2 ) boosted the absorption efficiency up to 88%.

Keywords: CO 2 capture; microchannel; absorption; CO 2 -rich gas (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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