| 摘要 |
PURPOSE: To suppress formation of any area being locally high in temperature in a furnace by permitting oxygen and a fuel to be jetted from an oxygen jetting section and a fuel jetting section, which are installed in a furnace body with a distance therebetween, and mixing and burning oxygen and the fuel while making jetting flows thereof entrain a furnace gas. CONSTITUTION: Provided on a furnace body 1 are an oxygen jetting section 2 and a fuel jetting section 3. First, a temperature in a furnace 5 is raised to a level, for example, 250 to 700 deg.C by combustion effected by a burner 4. Then, combustion effected by the burner 4 is stopped to permit oxygen and a fuel to be jetted from the oxygen jetting section 2 and the fuel jetting section 3. Oxygen and the fuel are mixed and burnt while permitting jetting energy thereof to draw and entrain a furnace gas. As the respective jetting flows entrain the furnace gas, the respective gases undergo combustion while being diluted with the furnace gas. Therefore, any area being locally high in temperature is not formed in the furnace 5, and a furnace temperature is made uniform. |
