The equation for radiation heat transfer in a multiple combustion boiler furnace with nuidized bed and pulverized coal firing is derived from direct calculation of radiation heat transfer.
The circulating fluidized bed(CFB)boiler is an essential option,serving as a flexible power source.However,it is notable that CFB boilers exhibit noticeable limitations in rapid load changes.This study delved into the...The circulating fluidized bed(CFB)boiler is an essential option,serving as a flexible power source.However,it is notable that CFB boilers exhibit noticeable limitations in rapid load changes.This study delved into the impact of fuel characteristics on CFB load change rate,combustion efficiency,and original NOx emissions using a 2 MW CFB experimental platform.The findings revealed that blending pulverized coal or modified fuel positively influenced the improvement of CFB load change rate,with blending modified fuel showing a more significant effect.Blending the modified fuel and pulverized coal increased the load change rate within the 50%–100%range by 164.4%and 57.3%,respectively.Additionally,blending pulverized coal and modified fuel significantly reduced NOx emissions,although there remained room for improvement in combustion efficiency.Compared to conventional combustion,blending pulverized coal and blending modified fuel decreased NOx emissions by 35.9%and 41.4%at 100%load,respectively.展开更多
文摘The equation for radiation heat transfer in a multiple combustion boiler furnace with nuidized bed and pulverized coal firing is derived from direct calculation of radiation heat transfer.
基金supported by the"Key technology and demonstration of deep and flexible peaking for circulating fluidized bed boiler",Strategic Priority Research Program of the Chinese Academy of Sciences (grant No.XDA 29010100).
文摘The circulating fluidized bed(CFB)boiler is an essential option,serving as a flexible power source.However,it is notable that CFB boilers exhibit noticeable limitations in rapid load changes.This study delved into the impact of fuel characteristics on CFB load change rate,combustion efficiency,and original NOx emissions using a 2 MW CFB experimental platform.The findings revealed that blending pulverized coal or modified fuel positively influenced the improvement of CFB load change rate,with blending modified fuel showing a more significant effect.Blending the modified fuel and pulverized coal increased the load change rate within the 50%–100%range by 164.4%and 57.3%,respectively.Additionally,blending pulverized coal and modified fuel significantly reduced NOx emissions,although there remained room for improvement in combustion efficiency.Compared to conventional combustion,blending pulverized coal and blending modified fuel decreased NOx emissions by 35.9%and 41.4%at 100%load,respectively.
