摘要
为了降低某300 MW CFB锅炉二氧化硫排放量,设计了尾部烟道直接喷氨水脱硫系统,在机组负荷260MW范围内进行了锅炉尾部烟道喷氨水脱硫试验.结果表明：脱硫效率在26.4％～45.7％,脱硫效率随氨水流量的增大而增大,整个系统对烟温影响很小,引风机出口烟气温度最高降幅只有1.7K,后烟道阻力也没有明显变化.试验过程中未出现飞灰结块或烟道积水的问题.
To reduce the SOz emission of a 300 MW CFB boiler, a SOz removal system is designed by directly spraying ammonia into the tail flue duct, and subsequently experimental tests are conducted at the load of 260 MW on the system. Test results show that the desulfurization efficiency lies in the range of 26.4% -45.7%, which increases with the rise of ammonia flow rate. The system has a little impact on the flue gas temperature, and the maximum drop of flue gas temperature at outlet of induced draft fan is only 1.7 K. Meanwhile, the flue resistance does not change significantly at boiler tail. During the test, no obvious accumulation of fly ash or water is observed.
出处
《发电设备》
2016年第4期250-253,共4页
Power Equipment
关键词
CFB锅炉
氨法
脱硫
CFB boiler
ammonia method
desulfurization
