摘要
为了解污泥掺烧对锅炉实际运行中产生的影响,对某660 MW墙式切圆锅炉进行对照试验,在高、中、低负荷下掺烧污泥,并与不掺烧污泥的工况进行对比。结果表明:含水率为72%的污泥在2%的掺烧比例下,锅炉炉膛温度分布大致相同,平均温度下降约15 K,机组排烟温度略有上升,NO_(x)、SO_(2)的排放浓度均有所降低,CO的排放浓度上升,混合燃料灰渣的结焦性略有上升,锅炉效率下降约0.2%。结合混合燃料灰渣的重金属检测与二噁英排放结果,得出各负荷下,燃煤机组掺烧低比例的高含水率污泥具备可行性。
In order to understand the influence of sludge mixed combustion on the actual operation of the boiler,a control test was carried out on a 660 MW wall type tangentially-fired boiler.Sludge was mixed combustion under high,medium and low load,and compared with the working condition without sludge.The results show that when the sludge with water content of 72% under the condition of 2% blending ratio,the temperature distribution of boiler furnace is roughly the same,the average temperature decreases by about 15 K,the smoke exhaust temperature of the unit increases slightly,the emission concentration of NO_(x) and SO_(2) decreases,the emission concentration of CO increases,the coking of mixed fuel ash residue increases slightly,and the boiler efficiency decreases by about 0.2%.Combined with the heavy metal detection and dioxin emission test results of mixed fuel ash residue,it is concluded that it is feasible for coal-fired units to burn low proportion and high water content sludge under various loads.
作者
杨琨
丁士发
张涛
Yang Kun;Ding Shifa;Zhang Tao(Shanghai Power Equipment Research Institute Co.,Ltd.,Shanghai 200240,China)
出处
《发电设备》
2022年第4期277-281,296,共6页
Power Equipment
关键词
墙式切圆锅炉
污泥
掺烧试验
锅炉效率
重金属
二噁英
wall type tangentially-fired boiler
sludge
mixed combustion test
boiler efficiency
heavy metal
dioxin
