NO2.2a

ABSKIN - Absorption Kinetic Studies

Facility Location
City & country
Trondheim (Norway)
Kolbjørn Hejes vei 1B, 7034
Description & contacts of the access provider
Legal name of organisation
NTNU - Norwegian University of Science and Technology (Norges teknisk-naturvitenskapelige universitet)
Infrastructure contact - Primary contact
Hanna Knuutila
RICC contact - Secondary contact
Morten Grønli
Facility Availability
Unit of access
Weeks
Availability per year
Minimum 4 weeks
Expected duration of single experiment:
4 weeks
Operational or other constraints
Specific risks:
none
Legal issues
none

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

  • Three setups for measurement of kinetics
  • Viscosity and density measurements
  • The possibility to measure the physical solubility of CO2 using N2O analogy.

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.

Stirred cell setup
Drawing of the wetted wall column setup
State of the art, uniqueness, & specific advantages
  • The installations C1.3, C1.4 and C1.5, designed for CO2 capture research, are located in the same campus making it possible to combine kinetic experiments with solvent degradation or gas-liquid equilibria studies.
  • The laboratory has a close co-operation with external analytical laboratory (SITNEF Industry) offering services to analyse liquid samples for degradation products and specific amines.
Scientific Environment

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.

selected publications

Juliana G.M.-S. Monteiro, Hammad Majeed, Hanna Knuutila, Hallvard F. Svendsen (2015)
Kinetics of CO2 absorption in aqueous blends of N,N-diethylethanolamine (DEEA) and N-methyl-1,3-propane-diamine (MAPA)
Chemical Engineering Science, 129, 2015, Pages 145-155
Hartono A. et al. (2008)
Solubility of N2O in aqueous solution of Diethylenetriamine
J.Chem Eng. Data 2008, 53, 2696-2700
Knuutila, H et al. (2010)
Kinetics of the reaction of carbon dioxide with aqueous sodium and potassium carbonate solutions
Chemical Engineering Science, Volume 65, Issue 23, 1 December 2010, Pages 6077-6088
Luo, X et al. (2012)
Comparative kinetics of carbon dioxide absorption in unloaded aqueous monoethanolamine solutions using wetted wall and string of discs columns
Chemical Engineering Science 2012; Volum 82. s. 31-43
Gondal, S., Asif, N. Svendsen, H.F. Knuutila, H. (2015)
Kinetics of the absorption of carbon dioxide into aqueous hydroxides of lithium, sodium and potassium and blends of hydroxides and carbonates
Chemical Engineering Science, 123, 487-499
Garcia, M., Knuutila HK., Gu, S. (2016)
Determination of kinetics of CO2 absorption in unloaded and loaded DEEA+MAPA blend
Energy Procedia, XXX (13th International Conference on Greenhouse Gas Technologies, GHGT13, 14 - 18 November 2016, Lausanne, Switzerland)
Putta, K. R., Pinto, D. D. D. Svendsen, H. F., Knuutila, H. K. (2016)
CO2 absorption into loaded aqueous MEA solutions: Kinetics assessment using penetration theory
International Journal of Greenhouse Gas Control 53: 338-353