A coal-fired boiler system burns coal at a rate of 40,000kg/h. The coal has an ultimate analysis of 76 wt %,5%H,8%O, and 11% non-combustible ash. The higher heating value of the coal is 25,700kJ/kg. Air is preheated to a certain temperature and then enters the furnace, where it is burned with the coal. The flue gas leaving the furnace contains 7.71 mole %CO2,1.29 mole\% CO, and a mixture of O2,N2, and H2O. The flue gas emerges from the furnace at 260C and is cooled to 150C in a preheater. Non-combustible residue (slag) leaves the furnace at 450C. A coal-fired boiler system burns coal at a rate of 40,000kg/h. The coal has an ultimate analysis of 76 wt %,5%H,8%O, and 11% non-combustible ash. The higher heating value of the coal is 25,700kJ/kg. Air is preheated to a certain temperature and then enters the furnace, where it is burned with the coal. The flue gas leaving the furnace contains 7.71 mole %CO2,1.29 mole\% CO, and a mixture of O2,N2, and H2O. The flue gas emerges from the furnace at 260C and is cooled to 150C in a preheater. Non-combustible residue (slag) leaves the furnace at 450C