Abstract
Chemical looping combustion (CLC) is a concept in which separation of CO2 from N2 happens inherently, without losing any combustion energy, making it a potential alternative to the conventional CO2 capture technologies. CLC is an indirect combustion process where oxygen is transferred from air to fuel using an oxygen carrier (OC) material. Since the product of the fuel reaction with oxygen is without N2, there is a significant scope for CLC to be a competitive CO2 capture technology concept. This chapter overviews various aspects of CLC, such as the fuels used, oxygen carrier materials, reactor designs, and system level analyses. A simplified performance model for top-level evaluation of CLC processes is also presented. Based on a comparison with the status of other CO2 capture technologies, a technological outlook and challenges faced by CLC are also discussed.
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