AURORA’s latest scientific journal publication provides experimental density and viscosity data on different unloaded and CO2-loaded aqueous blends of 2-amino-2-methyl-1-propanol (AMP) and piperazine (PZ) used for absorption-based CO2 capture. The paper also provides correlations for density and viscosity suitable for various modelling works.
In our previous review article, we identified knowledge gaps related to CESAR1 (aqueous blend of AMP and PZ) solvent system. The review paper identified several gaps in experimental data for CESAR1, including a lack of data related to emissions, solvent stability as well as density and viscosity data for CO2-loaded and unloaded systems.
This new publication addresses the knowledge gap related to density and viscosity of different AMP and PZ blends by providing highly needed data and correlation-based models. .
Why measure the density and viscosity?
The data collected in this work and the correlations developed can be used in developing process models used to design CO2 capture plants. The viscosity impacts the mass transfer between the gas and the liquid phase, i.e. the performance of the absorber and hence the absorber size. Furthermore, the viscosity is also needed in the design of the heat exchangers, while the density of CO2 loaded solutions can be used in online monitoring of the CO2 loading.
The work was performed at NTNU by Diego Morlando, Hanna Katariina Knuutila and Ardi Hartono from the Department of chemical engineering at NTNU: https://www.ntnu.edu/chemeng
Next Steps
The AURORA project will continue the work of closing the knowledge gaps related to the properties of aqueous blends of AMP-PZ.
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