燃煤机组耦合污泥发电对锅炉运行影响分析  

Effect of sludge-coal blending combustion on operation of coal-fired boiler

作　　者：周凌宇[1] 王一坤[1] 陈钢 成汭珅 解冰[1] 张广才[1] 柳宏刚[1] ZHOU Lingyu;WANG Yikun;CHEN Gang;CHENG Ruishen;XIE Bing;ZHANG Guangcai;LIU Honggang(Xi’an Thermal Power Research Institute Co.,Ltd.,Xi’an 710054,China;Huaneng Taicang Power Plant Co.,Ltd.,Taicang 215400,China)

机构地区：[1]西安热工研究院有限公司,陕西西安710054 [2]华能太仓发电有限责任公司,江苏太仓215400

出　　处：《热力发电》2020年第7期77-83,共7页Thermal Power Generation

基　　金：中国华能集团有限公司总部科技项目(HNKJ18-H09)。

摘　　要：为了研究燃煤机组掺烧污泥后对锅炉运行的影响,针对某电厂330 MW等级燃煤机组,以能量守恒定律为基础,通过热力校核计算分析了机组在330、280、180、80 MW电负荷时,分别掺烧含水率为82%、60%、35%和10%的污泥对锅炉热效率、燃煤量、排烟温度及减温水量等参数的影响。结果表明:在掺烧污泥的含水率一定时,对锅炉运行产生的影响随负荷降低而增大;而在锅炉负荷一定时,对锅炉运行产生的影响随污泥含水率的增大而增大;在80 MW电负荷下掺烧82%含水率污泥时影响最大,其锅炉热效率降低0.89个百分点;污泥掺烧对锅炉燃煤量的影响不定,在今后的工程评价与实践中应区别对待,具体核算。In order to study the influence of blending sludge on operation of coal-fired boilers,thermal calculation for a 330 MW coal-fired unit was carried out,on the basis of the energy conservation equation.At the load of 330 MW,280 MW,180 MW and 80 MW,the thermal efficiency,coal consumption,exhaust temperature and spray water flux were analyzed by blending sludge with moisture content of 82%,60%,35%and 10%.The results show that,when the moisture content in the co-fired sludge is kept constant,the influence of sludge blending on the boiler operation increases as the load decreases.When the unit load is kept constant,the effect of sludge blending on the boiler operation increases with the moisture content in sludge.The maximum efficiency reduction is 0.89 percentage point at 80 MW when blending the sludge with moisture content of 82%.The influence of sludge-coal co-combustion on the coal consumption of uncertain,which should be judged and calculated under specific situations.

关 键 词：燃煤锅炉 污泥 掺烧 含水率 热效率 燃煤量 排烟温度 减温水量 

分 类 号：TK227.1[动力工程及工程热物理—动力机械及工程] X705[环境科学与工程—环境工程]