System and method for treating CO2 generated in cement clinker production

The present disclosure relates to systems and methods for treating CO2 produced in cement clinker production. A system for treating CO2 generated in cement clinker production is connected to a cement clinker production unit that produces cement clinker and discharges flue gas including CO2, the system including: a cement clinker production unit that produces cement clinker and discharges flue gas including CO2 therein; the CO2 trapping unit is used for trapping CO2 in the flue gas discharged from the cement clinker production unit; the solid oxide electrolytic cell unit comprises a cathode, an anode and a cathode air inlet pipe, the solid oxide electrolytic cell unit is connected with the CO2 trapping unit through the cathode air inlet pipe, and water vapor and CO2 trapped by the CO2 trapping unit are supplied to an electric pile of the solid oxide electrolytic cell unit through the cathode air inlet pipe. A stack of the solid oxide electrolytic cell unit electrolyzes water vapor and CO2 to generate a first g