Abstract:After analyzing a power plant’s 300MW unit subcritical boiler flue gas system, combined with ultralow emission reconstruction, an improvement plan was indicated. By electrostaticbag precipitator extend, media gasgas heater improvement, fan collection and system resistance improvement, existing flue gas system resistance was reduced. Besides fulfilling environment  protection requirement, the power consumption was reduced.

Keywords:ultralow emission, resistance improvement, led to add one, fan selection, energy saving