The major drawback of using amine for carbon dioxide (CO2) capture is the contradiction between lower regeneration heat duty and high CO2 absorption rate. One way to overcome this problem is to develop an alternative absorbent with improved performance of sorption and desorption CO2

which can make energy consumption decrease. A quick method was used for selecting potential solvent systems for CO2 capture by experimental study in this paper. The analysis and comparison were made based on CO2 loading during sorption and desorption

the absorption/stripping rate

cycling capacity

relative heat consumption and so on. It is demonstrated that aqueous N

N-diethylethanolamine(DEEA) solution is of better absorption/stripping performance for CO2 capture

which can be presented in terms of equilibrium solubility

overall mass transfer coefficient(KGaV) and regeneration heat consumption

and these parameters were experimentally measured with relevant setup. The results show that the equilibrium solubility of CO2 in DEEA solution increases with rising of CO2 partial pressure and decreases with the increase of solution concentration; the KGaV increases with rising of liquid temperature and energy consumption; and the regeneration heat duty decreases with lean CO2 loading and increases with rich CO2 loading. Due to the high performance of DEEA

it could be a promising alternative solvent for CO2 capture.