| 摘要 |
PROBLEM TO BE SOLVED: To provide a boiler device and a high temperature air combustion system for high temperature air combustion capable of shortening a time the high temperature air combustion becomes possible in the boiler and the operation from starting the boiler to reaching the high temperature air combustion can be smoothly carried out.SOLUTION: The boiler device has a boiler 1, a pulverized coal nozzle 4 arranged in the furnace wall of the boiler and discharging pulverized coal, air nozzles 5 arranged adjacent to the pulverized coal nozzle discharging the secondary air, a heat exchanger 2 raising the temperature of the secondary air fed to the air nozzles 5 by the heat exchanging with the exhausted gas of the boiler, and a duct burner 21 raising the temperature of the secondary air by carrying out combustion in the supplying channel 18 of the secondary air, the high temperature air combustion is carried out with the secondary air discharged from the air nozzles 5 and the pulverized coal discharged from the pulverized coal nozzle 4. |
