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

Abstract Current work focuses on modelling and simulation of CO 2 removal from model shale gas using two promising deep eutectic solvents (DESs) namely reline and ethaline. The experimentally calculated solubility results of CO 2, as well as CH 4 in the reline and ethaline along with the physicochemical properties of DESs, were employed for the modelling and simulation of CO 2 removal studies. The VLE data of CO 2 in DESs and CH 4 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 CO 2 removal from a model shale gas. The simulated results were compared with the conventional selexol process and MDEA CO 2 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 CO 2 capture process than the MDEA process.