Absorption kinetics are crucial when estimating the height of the absorber and during process simulations. Additionally to absorption rate data, data for physical properties are needed to model the kinetics. Therefore, this facility offers
Measurement of absorption kinetics can be performed with three different setups, string of discs, wetted wall column and stirred cell. We choose the setup to be used based on existing data on similar chemical structures. Both unloaded and loaded solutions can be measured. The amount of solvent needed is large for the string of discs and wetted wall column.
All the kinetic apparatuses are suitable for loaded and unloaded solutions. The wetted wall column and string of discs can be used up to 80oC using atmospheric pressure. The stirred cell extends the experimental range to elevated pressures. Additionally measurement of viscosity, density can be performed at the conditions used to measure the kinetics. Finally, N2O solubility into the studied solvent can be measured to determine the physical solubility of CO2 using N2O analogy.
Measurement of thermodynamic data, like VLE and heat of absorption, needed for example in process modelling can be performed. Absorption kinetics including measurement of physical properties is needed for sizing of absorber. Part of experimental apparatuses have been / are used in EU-funded projects like CASTOR, CESAR, DeCarbit, ENGAS, iCAP and HiperCAP. There is a close co-operation with SINTEF Materials and Chemistry and a long history of collaboration with the Department of Thermal Engineering, Tsingua University, Beijing and the Department of Chemical Engineering, University of Austin, Texas through exchange of PhD students and research personnel. In the last 8 years, more than 50 peer reviewed journal publications has been published presenting data from these installations.