LI Han, CHEN Jian. Thermodynamic modeling and process simulation for CO2 absorption into aqueous monoethanolamine solution[J]. CIESC Journal, 2014, (1): 47-54. DOI: 10.3969/j.issn.0438-1157.2014.01.006.
LI Han, CHEN Jian. Thermodynamic modeling and process simulation for CO2 absorption into aqueous monoethanolamine solution[J]. CIESC Journal, 2014, (1): 47-54. DOI: 10.3969/j.issn.0438-1157.2014.01.006.DOI:
A thermodynamic model for monoethanolamine (MEA)-H2O-CO2 was built using the electrolyte non-random two-liquid model. Over twenty parameters were regressed from the vapor pressure and heat capacity data for MEA
data of vapor-liquid equilibrium
heat capacity and heat of mixing for MEA-H2O
and CO2 solubility data for MEA-H2O-CO2 over a wide range of temperature
concentration and CO2 loading. The model was validated by the NMR speciation data and then used to build a process simulation for CO2 absorption/ desorption into 30%(mass) MEA. The simulation results match the pilot plant data in literature. For 30%(mass) MEA solution
when the CO2 removal rate in the absorber is 90%
the reboiler heat duty is the minimum by changing the mass flow ratio of liquid to gas in the absorber. The minimum reboiler heat duty is 3.64 GJ·(t CO2)-1