Operating Strategy of Chemical Looping Systems with Varied Reducer and Combustor Pressures

On chemical looping technology when applied to gasification, reforming and chemical syntheses, the operating pressure is an important factor that dictates the reactant conversion, and product formation economics of the technology for the processes. Common consideration of the operating pressure for the chemical looping system that includes reducer/fuel reactor and combustor/air reactor operation is based on the condition in which the reducer and the combustor are operated under similar pressures. This study considers another operating condition, characterizing the Fan Chemical Looping System, where the reducer and the combustor are operated under different pressures while solids are continuously or discontinuously circulating through the loop system. As an example, the chemical looping natural gas conversion to syngas with the eventual production of liquid fuels is given in this study. This example illustrates the thermodynamic limits and their associated compression duty with chemical looping syngas prod...