BOILER DEVICE

PROBLEM TO BE SOLVED: To provide a boiler device capable of securing high ignition performance and reducing a discharge amount of nitrogen oxide by improving nitrogen oxide reduction effect in a furnace, in the boiler device applying an oxygen/carbon dioxide combustion system. SOLUTION: This boiler device applying the oxygen/carbon dioxide combustion system including a boiler body 10, an oxygen manufacturing device, and exhaust gas recycling equipment, and mixing a part of a combustion exhaust gas discharged from the boiler body 10 with oxygen to be used as an oxidant of a fuel, further includes a primary air oxidant supply system 20 for charging a part of oxygen supplied from the oxygen manufacturing device to a primary air system flow channel 21 of the boiler body 10, and producing the oxidant by mixing it with the combustion exhaust gas flowing in the primary air system flow channel 21, and a secondary air oxidant supply system 30 for charging a part of oxygen supplied from the oxygen manufacturing device to a secondary air system flow channel 31 of the boiler body 10, and producing the oxidant by mixing it with the combustion exhaust gas flowing in the secondary air system flow channel 31. COPYRIGHT: (C)2010,JPO&INPIT