Modelling of a post-combustion carbon dioxide capture absorber using potassium carbonate solvent in Aspen Custom Modeller
Yue Wu, Fan Wu, Guoping Hu, Nouman R Mirza, Geoffrey W Stevens, Kathryn A Mumford
CHINESE JOURNAL OF CHEMICAL ENGINEERING | CHEMICAL INDUSTRY PRESS | Published : 2018
The process models for an equilibrium CO2 absorber and a rate based CO2 absorber using potassium carbonate (K2CO3) solvents were developed in Aspen Custom Modeller (ACM) to remove CO2 from a flue gas. The process model utilised the Electrolyte Non-Random Two Liquid (ENRTL) thermodynamic model and various packing correlations. The results from the ACM equilibrium model shows good agreement with an inbuilt Aspen Plus® model when using the same input conditions. By further introducing a Murphree efficiency which is related to mass transfer and packing hydraulics, the equilibrium model can validate the experimental results from a pilot plant within a deviation of 10%. A more rigorous rate based ..View full abstract
The authors acknowledge the technical and financial support from Peter Cook Centre for CCS Research. Infrastructure support from Particulate Fluids Processing Centre (PFPC) is also kindly appreciated.