A PULVERIZED COAL PURE OXYGEN BURNING SYSTEM

摘要

PURPOSE: A pulverized-coal oxy-combustion system is provided to prevent the fault of a boiler since in a recirculation process of exhaust gas, the decrease of carbon dioxide by inflow of air and the acceleration of the internal corrosion speed of a boiler are prevented. CONSTITUTION: A pulverized-coal oxy-combustion system comprises an air separator(100), main and secondary boiler units(200,300), and a mixing unit(400). The air separator separates and discharges pure oxygen from air. The secondary boiler unit discharges first and second exhaust gas by burning secondary fuel by the pure oxygen and removes moisture from the first exhaust gas. The mixing unit mixes the first or second exhaust gas with the pure oxygen and discharges first and second mixed gases.