Abstract: The chemical looping oxygen production system was designed based on thermal analysis and pressure analysis .Then Aspen Plus chemical process simulation software is used to simulate and analyze the influence of reactor temperature and pressure on system energy consumption in order to optimize the oxygen production system. The results show that under ordinary pressure with the increasing of oxygen reactor temperature the system energy consumption decreases; whereas with the increasing of oxidation reactor temperature the energy consumption increases; and also the smaller the difference of temperature between two reactors is， the lower the system energy consumption is. Under negative pressure with the decreasing of the pressure of oxygen reactor， the system energy consumption decreases. However， under positive pressure with the increasing of the pressure of oxidation reactor， the energy consumption first decreases and then increases. Therefore， the optimization of operating parameters can be obtained in the oxygen production system where oxygen reactor runs under negative pressure and oxidation reactor under positive pressure.

Key words: chemical looping oxygen production, process simulation, Aspen Plus, thermal analysis, pressure analysis, system energy consumption