HS3 Solvent Aspen Plus Model Validation Using Tiller Pilot Plant Data
Gilardi, Matteo
Bisotti, Filippo
Knuutila, Hanna K.
Bonalumi, Davide

How to Cite

Gilardi M., Bisotti F., Knuutila H.K., Bonalumi D., 2023, HS3 Solvent Aspen Plus Model Validation Using Tiller Pilot Plant Data, Chemical Engineering Transactions, 105, 181-186.


The HS3 solvent is an innovative blend for CO2 capture made up of a primary (3-amino-1-propanol, AP) and a tertiary (1-(2-hydroxyethyl) pyrrolidine, PRLD) amine studied in the H2020-funded Realise project. The thermodynamic framework has already been validated using experimental observations. The proposed thermodynamic model has been built into Aspen Plus V11 using the ENTRL (Electrolyte Non-Random Two Liquid) package and, then, finalized by including a mass transfer model and kinetics. The resulting full flowsheet simulation model has been validated using experimental measurements from Tiller semi-industrial pilot plant (Trondheim, Norway). The experimental campaign succeeded in demonstrating lower energy requirement and liquid recirculation compared to conventional monoethanolamine (MEA) at 30% w/w. The present contribution aims at presenting the validation procedure of the developed model over experimental data from the large-scale facility at Tiller and showing that the HS3 solvent is a promising blend to mitigate energy consumption in the CO2 capture process. All KPIs of the CO2 capture plant (CO2 capture rate, CO2 flow released in the stripper and temperature profiles inside the two columns) are predicted with an Absolute Average Relative Deviation (AARD) lower than 5% and with an Average Relative Deviation (ARD) close to zero. This statistical analysis demonstrates that the developed HS3 Aspen model can be used for simulation, energy analysis, and techno-economic assessment purposes.