高参数垃圾焚烧余热锅炉过热器控温防腐分析  

Temperature Control and Anti-corrosion Analysis on Superheater of High Parameter Waste Incineration Boiler

作　　者：余俊勋 刘亚成 YU Junxun;LIU Yacheng(Nanning Jianning Water Investment Group Co.,Ltd.,Nanning 530028,Guangxi,China;Shanghai SUS Environment Co.,Ltd.,Shanghai 201703,China)

机构地区：[1]南宁建宁水务投资集团有限公司,广西南宁530028 [2]上海康恒环境股份有限公司,上海201703

出　　处：《工业锅炉》2024年第4期1-7,共7页Industrial Boilers

基　　金：国家重点研发计划“固废资源化”重点专项项目垃圾焚烧设施高效协同处置工业有机固废关键技术(2020YFC1910100)。

摘　　要：为了解决垃圾焚烧锅炉过热器易腐蚀爆管的痛点问题,以某机械式炉排锅炉及配套余热锅炉为研究对象,分析主蒸汽参数和热负荷对过热器防腐控温设计的影响,得到不同主蒸汽参数、垃圾低位热值和处理量下过热器入口烟温、主蒸汽温度和减温水量的变化范围。计算结果表明:MCR工况下,过热器入口理论最小烟温随着主蒸汽参数提升而增加,4.0 MPa/400℃参数下,其值为465℃,对于13 MPa/430℃(炉内再热)参数下,其值为620℃,高于13.5 MPa/450℃(炉外再热),存在较高的高温腐蚀风险。In order to solve the industry development pain point problem of easy corrosion and tube explosion of waste incineration boiler superheater,a mechanical grate furnace and supporting waste heat boiler was taken as the research object,to analyze the influence of main steam parameters and heat load on the anti-corrosion temperature control design of superheater,and to obtain variation range of flue gas temperature at the inlet of superheater,main steam temperature,and desuperheating water volume under different main steam parameters,waste low calorific value and treatment capacity.The calculation results showed that under MCR condition,the theoretical minimum flue gas temperature at the superheater inlet increases with the increase of main steam parameters.Under the parameter of 4.0 MPa/400℃,its value is 465℃,and under the parameter of 13 MPa/430℃(reheating in the furnace),its value is 620℃,which is higher than the reheating technology outside the furnace under the parameters of 13.5 MPa/450℃,and there was a high risk of high-temperature corrosion.

关 键 词：垃圾焚烧锅炉 锅炉受热面 过热器 高温腐蚀 控温设计 

分 类 号：TK229.9[动力工程及工程热物理—动力机械及工程]