The process programs of the air heater system,hot air recirculation system and flue gas waster heat recovery system in the heating cool wind system of a 410 t/h coal fired boiler were discussed and the optimal program was found out.%以某热电厂410t/h燃煤锅炉的冷风加热系统为例,分别阐述了暖风器系统、热风再循环系统和烟气余热回收加热系统的工艺方案,并找出了最优方案.
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