摘要
针对现役老旧垃圾焚烧机组效率低、能耗大的技术问题,选取三台同类型垃圾焚烧发电机组为研究对象,试验研究并分析三台机组焚烧炉-余热锅炉性能及烟气净化设备漏风情况,定量计算焚烧炉-余热锅炉效率及各项热损失分布,探索三台机组运行的差异。结果表明:导致老旧机组焚烧炉-余热锅炉效率偏低的直接原因是排烟温度过高,根本原因是燃用的生活垃圾热值大幅提高。机组总热损失中排烟热损失所占比例最大,甲电厂为84.75%,乙电厂为83.59%,丙电厂为76.87%,其次为炉渣热损失;老旧机组普遍存在烟气净化设备漏风率偏大的问题,甲电厂布袋除尘器漏风率为12.12%,乙电厂为9.87%,丙电厂达到19.83%,过高的漏风率不利于电厂经济运行。研究结果对垃圾焚烧电厂运行优化及下一步技术改造有重要指导意义。
In light of the technical problem of low unit efficiency and high energy consumption of the old waste incineration power plants,three waste incineration power plants with the same type were chosen to experimentally study the performance of the incinerator-heat recovery boilers and the air leakage characteristics of the flue gas cleaning equipment.The efficiency of the incinerator-heat recovery boilers was quantitatively calculated,the distribution of various heat losses was obtained,and the operational difference among the three units was explored.The results show that the direct cause of the low incinerator-waste heat boiler efficiency is the high exhaust gas temperature,while the primary cause is the large increase in the calorific value of municipal solid waste.The heat loss from smoke exhaust accounts for the largest proportion in the total heat loss of the unit,that is 84.75%in power plant A,83.59%in power plant B,and 76.87%in power plant C,followed by the heat loss from slag.The air leakage rate of the flue gas cleaning equipment is generally high in old power units.The air leakage rate of bag dust collector in power plant A is 12.12%,9.87%in power plant B,and 19.83%in power plant C,which is bad for the economic operation of the power plants.The research results can provide important guiding significance for the operation optimization and technical transformation in waste incineration power plants.
作者
任刚
马江
汪阳华
王峰
王为术
刘军
REN Gang;Ma Jiang;WANG Yanghua;WANG Feng;WANG Weishu;LIU Jun(The Boiler&Pressure Vessel Safety Inspection Institute of Henan Province,Zhengzhou 450016,China;Shenzhen Dorabot Inc.,Shenzhen 518067,China;School of Electric Power,North China University of Water Resources and Electric Power,Zhengzhou 450045,China)
出处
《工业加热》
CAS
2022年第4期5-9,共5页
Industrial Heating
基金
河南省市场监督管理局科技计划项目资助(2020sj61)。
关键词
垃圾焚烧
焚烧炉-余热锅炉
性能试验
效率
漏风率
solid waste incineration
incinerator-heat recovery boiler
performance tests
efficiency
air leakage rate
