A novel gas switching combustion reactor for power production with integrated CO2 capture: Sensitivity to the fuel and oxygen carrier types

摘要

In this paper, the gas switching combustion (GSC) concept is further investigated with a sensitivity analysis for the fuel and oxygen carrier types. The GSC concept offers an alternative to the conventional chemical looping combustion (CLC) process for power production with integrated CO2 capture. In this concept, oxidation and reduction of the oxygen carrier take place in the same reactor by alternating air and fuel gas feeds into the reactor. This completely avoids any need for oxygen carrier circulation and thereby avoids many technical and scale-up challenges related to the looping concept. First demonstration of the concept with carbon monoxide (CO) as reducing gas and Ni-based oxygen carrier showed that the reactor could operate autothermally to continuously convert cold feed gases into hot product gases.