基于等寿命原则的垃圾电站锅炉烟道高温防腐设计策略探究  

High-Temperature Anti-Corrosion Design Strategy of Boiler Flue of Waste Incineration Power Station Based on the Principle of Equal Life

作　　者：曲作鹏 田欣利 谢广校 汪瑞军[3] 吴永新 王海军 QU Zuopeng;TIAN Xinli;XIE Guangxiao;WANG Ruijun;WU Yongxin;WANG Haijun(National Engineering Laboratory for Biomass Power Generation Equipment,North China Electric Power University,Beijing 102206,China;JiangSu KeHuan Innovative Material Co.,Ltd.,Huaian 223005,China;Chinese Academy of Agricultural Mechanization Sciences Group Co.,Ltd.,Beijing 100083,China;China Everbright Environment Group Limited,Shenzhen 518000,China)

机构地区：[1]华北电力大学生物质发电成套设备国家工程实验室,北京102206 [2]江苏科环新材料有限公司,江苏淮安223005 [3]中国农业机械化科学研究院集团有限公司,北京100083 [4]中国光大环境(集团)有限公司,广东深圳518000

出　　处：《材料保护》2023年第11期154-160,共7页Materials Protection

基　　金：中央高校基本科研业务费(2020JG003);国家重点研发计划(2019YFC1907000)资助。

摘　　要：针对目前国内外高参数垃圾发电站高温防腐的迫切需求,采用等寿命设计原则,按照垃圾锅炉内各烟道实际温度和管道腐蚀速率的变化规律,较为精细化地制定了烟道高温腐蚀防护策略和方案:第一烟道的中、下部水冷壁,确定采用复合感应熔焊涂层防护;第一烟道的上部和顶棚,采用Inconel625堆焊;第二烟道水冷壁采用复合感应熔焊工艺;第三烟道水冷壁采用感应熔焊;水平烟道中的高温过热器采用复合感应熔焊工艺;中、低温过热器采用感应熔焊工艺。省煤器推荐采用高温陶瓷涂料。按照等寿命设计原则制定的分烟道精细化防腐策略,可大大降低企业的一次性投入,经济效益显著。In view of the urgent need for high-temperature corrosion prevention in high-parameter waste incineration power stations at home and abroad,a refined strategy and plan for high-temperature corrosion protection of flue were devised using the equal life design principle according to the change law of the actual temperature of each flue in the waste boiler and the corrosion rate of the pipeline.For instance,composite induc-tion fusion welding coatings were applied to the mid and lower sections of the first flue’s water-cooled wall;the upper and ceiling portions of the first flue were welded with Inconel625;composite induction fusion welding techniques were used for the second flue’s water-cooled wall;the third flue’s water-cooled wall was treated using induction fusion welding;the high-temperature superheater in the horizontal flue adopted a composite induction fusion welding process;induction fusion welding was the chosen method for the medium and low-temperature superheat-ers.For the economizer,the use of high-temperature ceramic coatings was recommended.The refined anti-corrosion strategies of the flue according to the principle of equal life design could greatly reduce the one-time investment of the enterprise and bring significant economic benefits.

关 键 词：垃圾发电站 等寿命设计 锅炉四管 堆焊 复合感应熔焊 陶瓷涂料 精细化防腐 

分 类 号：TK212.4[动力工程及工程热物理—动力机械及工程]