Corinne Beal

Chemical Looping Combustion of Refinery Fuel Gas with CO 2 Capture

Chemical looping combustion (CLC) is a relatively new technology, which integrates air separation into the combustion process and produces a separate CO 2 /H 2 O flue gas stream for CO 2 capture. The basic process principle of a circulating fluidized bed (CFB) boiler is to perform solid fuel combustion in a high inventory fluidized bed where the solid fuel and the sorbent are recycled many times. The low temperature, long fuel residence time and high combustion efficiency inherent in the process result in low emissions and the ability to burn any solid fuel. For conventional applications of coal fired power plants without CO 2 capture, circulating fluidized bed (CFB) technology is demonstrated an unparalleled ability to achieve low SO 2 and low NO x emissions without the need for back-end equipment, such as selective catalytic reduction system. This is possible due to low combustion temperatures and the staging of air.