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Dr Monica Garcia Ortega


Postgraduate Research Student

Academic and research departments

Department of Chemical and Process Engineering.

My publications

Publications

Garcia Ortega Monica, Knuutila H, Gu Sai (2017) ASPEN PLUS simulation model for CO2 removal with MEA: Validation of
desorption model with experimental data,
Journal of Environmental Chemical Engineering 5 pp. 4693-4701 Elsevier
The chemical absorption process has been extensively studied as one of the main carbon capture and separation
technologies. This process comprises two stages: The absorption of CO2 into the solvent and the desorption, to
regenerate the solvent and produce the high concentrated CO2 gas.
Validated simulation models are essential for the scale-up of the chemical absorption process and they are
typically validated using only data from one pilot plant. In this work, a simulation model of the desorption
column built in ASPEN PLUS v8.6 was validated using four experimental pilot campaigns using 30 wt% MEA.
The desorbers in the different campaigns varied in the diameters, structured packing heights and packing types.
A good agreement is observed between experimental data and the simulation results of the chemical absorption
process presented here. The model shows an AARD (average absolute relative deviation) of 9.2% for the
CO2 stripped (kg/h) for the tested 78 experimental runs. The simulated temperatures of the liquid flux leaving
the reboiler show a deviation of 3.3% compared with the experimental data. The deviations on the estimation of
the CO2 stripped show some dependency on the CO2 loading in the rich amine flux entering the desorber.
However, the deviations are independent on the temperature of the rich amine