An advanced cryogenic air separation process for oxy-combustion is proposed based on self-heat recuperation technology. Compared with the conventional double-column cryogenic air separation process, only one distillation column is used in the proposed process. The heat of N 2 product gas from the top of the distillation column is recirculated by exchanging latent heat with the liquid O 2 in the bottom and feed streams, largely reducing the energy consumption. The simulation results showed that the energy consumption of the proposed cryogenic air separation process was decreased by 30% comparing with the conventional process, when producing O 2 with low purity (95 mol%) and low pressure (120kPa).