Oxy-fuel Combustion Process

Oxy-fuel combustion is one of the favorable option for retrofitting fosil-fuel power plant. Evaluations upon techno-economic studies, plant capability on emission reduction, and its possibility of implementation design in the large scale plant have shown the promising results. In oxy-fuel combustion process, the fuel (coal) is burned using pure oxygen while nitrogen content in the air is firstly separated in a typical air separation unit (ASU). By this approach, the flame temperature in the furnace goes high and to prevent it from the off-limit condition, the CO₂ from the flue gas is recycled to the furnace.