IEC 5 |
| Amornvadee Veawab, Faculty of Engineering, Faculty of Engineering, University of Regina, 3737 Wascana parkway, Regina, SK S4S 0A2, Canada |
| Gas absorption with chemical reaction is a viable technology for separating carbon dioxide (CO2) from low-pressure gas streams. Monoethanolamine (MEA) is the most attractive solvent because it reacts with CO2 at a faster rate and the cost of raw materials is relatively low compared to other alkanolamines. However, cost of the MEA process is prohibitively high due to a significant amount of energy required for solvent regeneration, and severe operating problems such as corrosion, solvent loss and solvent degradation. Therefore, there is considerable incentive to use alternative solvents that lead to a reduced process cost. This paper provides a strategy for selecting cost-effective CO2 absorption solvents. The selection strategy relies on knowledge of thermodynamics, kinetics, mass-transfer, energy requirement, corrosion and solvent degradation during both CO2 absorption and solvent regeneration. Relevant data of various alkanolamines obtained from our laboratory work are also given for demonstration purpose. |
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Separations Science Approaches to Carbon Management (Cosponsored by Separation Science & Technology Subdivision)
9:00 AM-11:55 AM, Sunday, March 23, 2003 Convention Center -- Room 393, Oral
Division of Industrial and Engineering Chemistry |