| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an in-furnace combustion control method for not only improving energy efficiency and uniformity of in-furnace heating temperature but also inhibiting generation of nitrogen oxide or carbon dioxide inexpensively even by using an existing industrial furnace. <P>SOLUTION: Ceiling burners (203) matrix-arranged on the ceiling of an industrial furnace (200) are driven by using fuel and a first oxidizing agent to heat a heating target object (202) in a furnace. A second oxidizing agent with an oxygen content equal to or more than 85 wt.% is supplied through a lance (206) arranged on a side wall (201) into the furnace in the form of jet stream (207) at an supersonic speed, and is allowed to pass through ceiling burner arrays (205a, 205b) parallel within a horizontal plane over the heating target object. The supply amount of the second oxidizing agent per unit time is controlled so that an oxygen amount to be thereby supplied may become at least 50 wt.% of total oxygen amount to be supplied into the furnace. <P>COPYRIGHT: (C)2012,JPO&INPIT |
