Document Type : Research Paper
The ability of technology and active solvents to absorb carbon dioxide from natural gas and after-combustion gases and to regenerate used solvents is a key representative of the search for efficient methods and environmentally friendly solvents. This study aims to construct a 2D model to evaluate the effectiveness of a hollow fiber membrane contactor (HFMC), in capturing CO2 using three distinct types of ionic liquids (ILs): 1-butyl-3-methylimidazoliumtriflate (bmim [Triflate]), 1-Ethyl-3-methylimidazolium ethyl sulfate (emim[EtSO4]), and 1-Ethyl-3-methylimidazolium dicyanamide (emim[C2N2]). The present model considers the storage tank for the solvent and considers its availability over time. By comparing the model predictions with experimental data, the results were in good agreement, with a slight discrepancy in the starting time for CO2 uptake due to a time lag. Among the ILs evaluated, emim [C2N2] performs the best. Through sensitivity analysis, results reveal that increasing the feed flow rate and CO2 partial pressure enhances both the CO2 removal rate and prolongs solvent life.