污泥掺烧对墙式切圆锅炉性能的影响  

Effects of Sludge Mixed Combustion on the Performance of Wall Type Tangentially-fired Boiler

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)

机构地区：[1]上海发电设备成套设计研究院有限责任公司,上海200240

出　　处：《发电设备》2022年第4期277-281,296,共6页Power Equipment

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.

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 

分 类 号：TK227.1[动力工程及工程热物理—动力机械及工程]