| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide combustion equipment which can cause stable combustion throughout a combustion amount adjusting range while turn-down is enlarged and a NOx reduction is contrived and, in addition, can be made compact. SOLUTION: This combustion equipment is constituted in such a way that a primary exhaust gas discharge port 1 from which an oxygen-containing exhaust gas is discharged as a primary exhaust gas E1 for primary combustion and a secondary exhaust gas discharge port 2 from which an exhaust gas is discharged as a secondary exhaust gas E2 for secondary combustion are positioned in a state where the secondary port 2 annularly surrounds the outer periphery of the primary port 1 when viewed from the discharging direction of the secondary exhaust gas E2 from the secondary port 2. In addition, flames F are formed along the discharging direction of the secondary exhaust gas E2 by blowing out a fuel gas G into the primary exhaust gas E1 discharged from the primary port 1 from a fuel gas blowing-out port 3. Moreover, the secondary exhaust gas E2 is supplied to the secondary combustion zone Z2 of the flames F.</p> |
