Since the Ba0.5Sr0.5Co0.8Fe0.2O3-δ membranes have the high oxygen permeability, which is widely used for the ion transport membrane(ITM). However, in order for the BSCF membranes to be commercialized as an air separation unit, its stability should be highly enhanced. Many researchers have been focused on the increase of the stability of the BSCF membranes. The performance of the ITM is affected by many geometric and operating parameters. The correlation between the parameters and the performance of the ITM should be investigated for the ITM system optimization.
In this study, a numerical study on the ITM system has been conducted by using the Aspen Plus®. The ITM system is composed of ITM, heat exchanger, heater, cooler, vacuum pump, turbine and compressor. Two dimensional ITM model has been developed to capture the ITM characteristics more accurately. The ITM model has been discretized into 3 control volumes of feed channel, membrane, and permeate channel in the flow perpendicular direction to capture the oxygen transfer rate from the feed side to the permeate side. In order to capture the distribution of the oxygen transfer rate through the ITM, the ITM model has been discretized into 10 control volumes along the air flow direction. The ITM model has been validated by comparison with the published data. The ITM system model has been simulated by varying the pressure of the feed and permeate side.