Novel non-aqueous amine solvents for reversible CO2 capture

F Barzagli, S Lai, F Mani - Energy Procedia, 2014 - Elsevier
F Barzagli, S Lai, F Mani
Energy Procedia, 2014Elsevier
This study describes the chemical capture of CO 2 by AMP and some AMP–alkanolamine
blends, namely IPMEA, TBMEA and MDEA, in non-aqueous solvents. The solvents used are
a mixture of ethylene glycol and 1-propanol or single diethylene glycol monomethyl ether. A
gas mixture containing 15% of CO 2 in air was used for the experiments. We designed two
different experimental procedures: 1) batch experiments of CO 2 absorption and desorption
aimed at investigating the absorption and desorption properties of the different absorbents; …
Abstract
This study describes the chemical capture of CO2 by AMP and some AMP–alkanolamine blends, namely IPMEA, TBMEA and MDEA, in non-aqueous solvents. The solvents used are a mixture of ethylene glycol and 1-propanol or single diethylene glycol monomethyl ether. A gas mixture containing 15% of CO2 in air was used for the experiments. We designed two different experimental procedures: 1) batch experiments of CO2 absorption and desorption aimed at investigating the absorption and desorption properties of the different absorbents; 2) continuous cycles of CO2 absorption (20 °C) and desorption (90-95 °C) in packed columns in order to investigate the CO2 absorption efficiency. The CO2 removal efficiency at equilibrium was in the range 87-95% depending on the operational conditions. The identification and the quantification of the species in solution were obtained from 13C NMR spectroscopic analysis.
Elsevier
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