| 摘要 |
<P>PROBLEM TO BE SOLVED: To effectively utilize heat of exhaust combustion gas and reduce variations in internal heating furnace temperatures and suppress occurrence of NOx, in a heating furnace which heats heating objects in sequence by supplying gas for combustion including oxygen to a burner and fuel and burning the fuel in the furnace. <P>SOLUTION: This heating furnace, which heats the heating object 1 in sequence in the furnace by supplying the gas for combustion including oxygen and fuel to the burner 11 and burning the fuel in the furnace 10, is provided with at least a pair of heat exchangers 20a, 20b which include a regenerator 22 filled with a heat storage material 21. The pair of heat exchangers alternately perform the operation for guiding the exhaust combustion gas in the furnace into the regenerator, storing heat in the heat storage material, and discharging it, and the operation for supplying the combustion gas to the regenerator and heating the combustion gas by the heat storage material; and excessively supply the fuel to the burner against the combustion gas. <P>COPYRIGHT: (C)2004,JPO |
