Combined with circulating fluidized bed post-combustion technology(abbreviated as"post-combustion technology")and furnace sorbent injection technology,the potential of synergistic control of the emissions of NOx and SO2 was explored in a 0.1 MW circulating fluidized bed test platform by studying effects of amount of sorbent added in post-combustion chamber on NOx and SO2 emissions and effects of temperature on NOx and SO2 emission with sorbent addition in furnace under post-combustion technology.The experimental results showed that under post-combustion technology,injec-ting absorbent in post-combustion chamber can reduce SO2 emissions and achieve a certain desulfurization effect.High-ef-ficiency synergistic removal of NOx and SO2 can be realized by reducing the temperature in the CFB furnace with sorbent ad-dition in the boiler under post-combustion.When combustion temperature is 845℃,the ultra-low NOx emission with sor-bent addition in the boiler under post-combustion can be achieved,and the SO2 emission can be reduced to 92.09 mg/m3.The SO2 emission can be decreased further,and expected to realize the ultra-low SO2 emission when calcined lime is injec-ted into post-combustion chamber.
circulating fluidized bedpost-combustion technologyNOxSO2synergistic control
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