CFD STUDY ON THE COMBUSTION CHAMBER OF AN OXY-FUEL FGR BOILER FOR $CO_2$ CAPTURING

순산소 재순환 연소를 채택한 $CO_2$ 회수형 보일러 연소실에 대한 수치해석

An oxy-fuel boiler has been developed to capture $CO_2$ from the exhaust gas. FGR (flue gas recirculation) is adopted to be compliant with the retrofit scenario. Numerical simulations have been performed to study the detailed physics inside the combustion chamber of the boiler. The temperature field obtained from the simulation agrees with the flame image from the experiment. The FGR combustion yields similar heat transfer characteristics with the conventional air combustion while the flame is formed further downstream in case of the FGR combustion.