Article ID: 25-17AD
In the widely researches of carbon capture utilization and storage technology to address climate issues caused by greenhouse gas emissions, improving the purity of captured CO2 is a crucial direction. This study proposes a system design that integrates a trans-critical CO2/ionic liquid(IL) absorption refrigeration system(TsCO2-ARS) with a conventional post-combustion amine-based absorption carbon capture system(ACCS). By introducing the CO2 product from the ACCS into the TsCO2-ARS, the aim is to remove water vapor from the CO2 product while minimizing the additional energy demand imposed on the system by the CO2 purification process by using heat exchangers. Measured operational data from a pilot-scale amine-based ACCS were used for the simulation calculations in this study. For TsCO2-ARS, based on vapor-liquid equilibrium experiment data of CO2/ILs and Peng-Robinson equation of state (PR-EoS), the circulation ratio, the cooling capacity and the coefficient of performance, COP of the TsCO2-ARS under optimal working conditions were calculated. For the ACCS-TsCO2-ARS hybrid system, the total thermal energy consumption and energy change in heat exchangers were calculated and compared. The results of this study provide valuable insights for the design and optimization of the CO2 purification technology.
