Investigating the Solubility of CO2 in the Solution of Aqueous K2CO3 Using Wilson-NRF Model

Iranian Journal of Oil & Gas Science and Technology

Seyed Hossein Mazloumi¹  Reza Moradi² 

[1] Assistant Professor, Department of Chemical Engineering, Ferdowsi University of Mashhad, Mashhad, Iran;M.S. Student, Department of Chemical Engineering, Ferdowsi University of Mashhad, Mashhad, Iran;

关键词: co2 capture;    solubility;    non-electrolyte wilson-nrf;    thermodynamic modeling;    potassium carbonate;    ion-specific parameters;   

DOI  :  10.22050/ijogst.2018.122093.1443

来源: DOAJ

【 摘 要 】

Hot potassium carbonate (PC) solution in comparison with amine solution had a decreased energy of regeneration and a high chemical solubility of . To present vapor and liquid equation (VLE) of this system and predict  solubility, the ion specific non-electrolyte Wilson-NRF local composition model (isNWN) was used in this study; the framework of this model was molecular. Therefore, it was suitable for both electrolyte and non-electrolyte solutions. The present research employed the NWN model and the Pitzer-Debye-Hückel theory in order to assess the contribution of the excess Gibbs energy of electrolyte solutions in a short and long range. The data of  solubility in water and the system of aqueous  were correlated in the model considering a temperature range of  and a pressure range of and . The average absolute error of ( ) and ( ) systems were  and  respectively. The results and comparisons with other models proved that the experimental data were exactly correlated in the model.

【 授权许可】

Unknown