| 摘要 |
PROBLEM TO BE SOLVED: To provide a pulverized coal fired boiler facility which can prevent the flow rate of primary air bypassing an air preheater from increasing, and can enhance the boiler efficiency by suppressing the drop of the quantity of recovered heat, and can suppress the rise of exhaust gas temperature. SOLUTION: A primary air branching line 24 for feeding a part of primary air after having passed an air preheater 10 to the side of the secondary air is branched from the middle of the primary air line 7 and is connected to the middle of the secondary air line 8, and a flow regulating valve 25 is provided in the middle of that primary air branching line 24. |
