| 摘要 |
A thermal power boiler includes a furnace having a rear wall. A flue gas channel connected to the furnace includes a vertical back pass arranged on the rear wall side of the furnace. An ash hopper in the lower portion of the back pass has (i) a front wall, (ii) a rear wall, and (iii) two sidewalls. A pre-heater preheats combustion air and is provided with an inlet channel for flue gas connected to the preheater. The inlet channel has vertical portions, with an upper portion being attached to the lower portion of the back pass near the ash hopper. The inlet channel includes two adjacent channel portions connected to opposite sides of the back pass. One of the two portions is directly connected to the front wall of the ash hopper, and the other is directly connected to the rear wall of the ash hopper. |
