The deeply flexible peak-shaving for coal-fired power plant is an extremely important measure to promote the consumption of renewable energy power,which as a result could largely decrease CO2 emission.However,at present,this technology of deeply flexible peak-shaving has some difficulties in load adjustment and NOx emission.This paper firstly uses a novel technology route,with the circulating fluidized bed being coupled with preheating for pulverized coal.And the 240 t/h circulating fluidized bed boiler was reformed and built.The results show that the load adjustment deepness decreased by 18％,and the ultra-low NOx emission without ammonia injection was realized.The successful operation of this demonstration project provides a technical support for the development of the technology with the deeply flexible peak-shaving for coal-fired power plants.
240 t/h circulating fluidized bed boilerPreheating for pulverized coalDeeply flexible peak-shavingUltra-low NOx
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