PARTIALLY PREMIXED FUEL PREHEATING REGENERATIVE OXYFUEL COMBUSTION BURNER SYSTEM AND COMBUSTION METHOD

摘要

The present invention relates to a fuel preheating and partial premixing type thermal storage oxy-fuel combustion system and a combustion method using the same. More specifically, the present invention relates to a fuel preheating and partial premixing type thermal storage oxy-fuel combustion system which comprises: a thermal storage chamber including a first combustion unit, a second combustion unit, and a combustion chamber which is installed between the first and the second combustion unit and into which oxygen and fuel are injected so that combustion can be generated; an oxygen nozzle channel installed between the combustion chamber and the thermal storage chamber, allowing the part of the oxygen to be injected into the combustion chamber after receiving the part of the oxygen preheated in the thermal storage chamber in a combustion mode, and receiving exhaust gas generated in the combustion chamber in a thermal storage mode; and a fuel nozzle channel receiving the rest of the oxygen preheated in the thermal storage chamber in the combustion mode, allowing the fuel to be injected into the combustion chamber after receiving the fuel, which is preheated after exchanging heat with the thermal storage chamber in the thermal storage mode, through a fuel supply pipe, and receiving the exhaust gas generated in the combustion chamber in the thermal storage mode, wherein the first combustion unit and the second combustion unit have thermal storage bodies respectively, and receiving and heating the exhaust gas in the thermal storage mode and receiving and preheating the oxygen in the combustion mode respectively.