Modelling and simulation of CO2 removal from shale gas using deep eutectic solvents

Current work focuses on modelling and simulation of CO2 removal from model shale gas using two promising deep eutectic solvents (DESs) namely reline and ethaline. The experimentally calculated solubility results of CO2, as well as CH4 in the reline and ethaline along with the physicochemical properties of DESs, were employed for the modelling and simulation of CO2 removal studies. The VLE data of CO2 in DESs and CH4 in DESs were modelled using the Peng-Robinson equation of state and the calculated values are in good agreement with the experimental values. Furthermore, the process simulation was done to investigate the DES-based CO2 removal from a model shale gas. The simulated results were compared with the conventional selexol process and MDEA CO2 capturing processes. The simulation results show higher shale gas recovery from DES process compared to conventional MDEA process. Also, the purity of shale gas was more in the DES-based CO2 capture process than the MDEA process.