Title :
Carbon Dioxide Absorption Characteristics of Blended Monoethanolamine and 2-Amino-2-methyl-1-propanol
Author :
Dey, Anindo ; Aroonwilas, Adisorn
Author_Institution :
Fac. of Eng., Regina Univ., Regina, SK
Abstract :
The removal of carbon dioxide (CO2) can be achieved by a number of techniques, among which absorption into aqueous alkanolamines is recognized as a commercially viable option for absorbing from high volume gas streams. In this present work, mass-transfer characteristics of blended Monoethanolamine and 2-Amino-2-methyl-1-propanol (MEA-AMP) solution are studied in a bench-scale absorber packed with high-efficiency structured packing. The experiments were conducted under atmospheric pressure, using a simulated gas mixture containing 15% CO2. The packed absorber was operated at different temperatures, i.e. 25degC, 30degC, 40degC, and 50degC while the gas- and liquid-velocities were kept constant at 100 kmol/m3-hr and 5 m3/m2-hr, respectively. The total alkanolamine concentration was 5.0 kmol/m3. The MEA/AMP mixing ratio and CO2 loading of the blended solution were varied from 1:2 to 2:1 and from 0.0 to 0.54 mol/mol, respectively. From the trends, it was observed that the absorption rate increased with the increased proportion of MEA in the blend. Higher temperatures resulted in higher absorption rates while higher CO2 loadings exhibited lower absorption rates.
Keywords :
absorption; carbon compounds; chemical engineering; climate mitigation; environmental factors; gas mixtures; 2-amino-2-methyl-1-propanol; CO2; aqueous alkanolamines; bench scale absorber; blended monoethanolamine; carbon dioxide absorption; high volume gas streams; structured packing; Absorption; Atmospheric modeling; Carbon capture and storage; Carbon dioxide; Character recognition; Global warming; Humans; Kinetic theory; Solvents; Temperature; AMP; CO2 absorption; MEA; packed column;
Conference_Titel :
EIC Climate Change Technology, 2006 IEEE
Conference_Location :
Ottawa, ON
Print_ISBN :
1-4244-0218-2
Electronic_ISBN :
1-4244-0218-2
DOI :
10.1109/EICCCC.2006.277219