| 摘要 |
Thermal power boiler (10), comprising a furnace (12) having a rear wall (16), a flue gas channel (14) connected to the furnace, said flue gas channel comprising a back pass (20) arranged on the rear wall side of the furnace, and a pre-heater (22, 22') for combustion air provided with an inlet channel (26, 26') for flue gas, the upper portion of the inlet channel for flue gas being connected to the lower portion of the back pass, and a flow channel (24, 24') for combustion air arranged adjacent to said inlet channel for flue gas for leading preheated combustion air to the furnace, and in which the inlet channel for flue gas comprises two adjacent channel portions (28, 28') which are connected to opposite sides of the back pass. |
