垃圾焚烧锅炉及余热锅炉热力计算方法优化  

Optimization of Thermal Calculation Method for Waste Incinerator and Its Heat Recovery Boiler

作　　者：王雨晴 廖艳芬[1] 马晓茜[1] WANG Yuqing;LIAO Yanfen;MA Xiaoqian(Guangdong Province Key Laboratory of Efficient and Clean Energy Utilization,South China University of Technology,Guangzhou 510640,China)

机构地区：[1]华南理工大学广东省能源高效清洁利用重点实验室,广东广州510640

出　　处：《锅炉技术》2022年第4期9-13,共5页Boiler Technology

基　　金：广东省重点领域研发计划(2020B1111380001)。

摘　　要：基于苏联1973年热力计算标准方法,提出了一种适用于垃圾焚烧锅炉及余热锅炉的新分区热力计算方法和专门适用于垃圾焚烧锅炉及余热锅炉热力计算时的管外灰垢热阻和灰污系数的经验值,并对某处理垃圾量350 t/d的电厂进行了热力计算验证,讨论了管外灰垢层热阻对燃烧室出口温度和总换热系数的影响以及灰污系数对燃烧室出口温度的影响,结果表明:管外灰垢层热阻每增加4.3(m^(2)·℃)/kW,出口烟气温度升高20℃左右,总传热系数减少1.3~1.5 W/(m^(2)·℃);灰污系数每升高0.1,燃烧室出口温度则平均降低25.08℃。同时,将热力计算结果与35组实际运行数据对比,误差在1%以内。Based on the thermal calculation standard method of the former Soviet Union in 1973,a new zonal thermal calculation method suitable for waste incinerator and its heat recovery boiler is proposed,and the empirical values of thermal resistance and fouling coefficient of the ash scale outside the tube specially suitable for thermal calculation of waste incinerator and waste heat boiler are put forward,and the thermal calculation of a power plant with waste treatment of 350 t/d is verified.The influences of the thermal resistance of the ash fouling outside the tube on the outlet temperature and the total heat transfer coefficient of the combustion chamber and the influence of the ash fouling coefficient on the outlet temperature of the combustion chamber that are discussed.And the results show that the outlet flue gas temperature increases by about 20℃ and the total heat transfer coefficient decreases by 1.3-1.5 W/(m^(2)·℃)when the ash fouling thermal resistance outside the tube increases by 4.3(m^(2)·℃)/kW.The outlet temperature of the combustion chamber decreases by an average of 25.08℃ when the ash pollution coefficient increases by 0.1.At the same time,the thermal calculation results are compared with 35 groups of actual operation data,and the error is less than 1%.

关 键 词：分区热力计算 经验数优化 余热锅炉 垃圾焚烧炉 

分 类 号：TK212[动力工程及工程热物理—动力机械及工程]