BURNER, FUEL COMBUSTION METHOD, AND BOILER REMODELING METHOD

摘要

PROBLEM TO BE SOLVED: To reduce the temperature of burner components under various operating conditions by well controlling the burning state of a burner. SOLUTION: In this burner comprising a primary nozzle, a secondary nozzle, and a tertiary nozzle, a flow passage change member jetting a tertiary air outward is installed at a partition wall separating the secondary nozzle from the tertiary nozzle, and the partition wall is formed to be movable parallel with a burner axis. By moving the partition, the jetting flow velocities and flow rates of the secondary air and the tertiary air can be controlled. As a result, the burner components can be cooled while reducing NOx. COPYRIGHT: (C)2006,JPO&NCIPI