高参数垃圾电站锅炉防腐涂层体系的设计策略与评价  

A Review on Design and Evaluation of Anti-corrosion Coating System for High Parameter Waste Power Plant Boiler

作　　者：曲作鹏[1] 刘吉臻[1] 田欣利 魏啸天 汪瑞军[3] 王永田[1] 王海军 QU Zuopeng;LIU Jizhen;TIAN Xinli;WEI Xiaotian;WANG Ruijun;WANG Yongtian;WANG Haijun(School of New Energy,North China Electric Power University,Beijing 102206,China;Jiangsu Kehuan New Material Co.,Ltd.,Huaian 223005,Jiangsu,China;Chinese Academy of Agricultural Mechanization Sciences Group Co.,Ltd.,Beijing 100083,China)

机构地区：[1]华北电力大学新能源学院,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

出　　处：《材料导报》2024年第8期186-191,共6页Materials Reports

基　　金：国家重点研发计划(2019YFC1907000)。

摘　　要：随着国家“双碳”战略目标的提出,垃圾发电成为城市垃圾处理的主流方式。针对高参数垃圾电站锅炉管道腐蚀减薄到一定程度时,造成泄漏甚至爆管的严重安全问题,本文在简介了高参数对锅炉腐蚀影响规律的基础上,评述了高参数条件下管道的基材特性及主流涂层防护技术,重点论述了Inconel堆焊、感应熔焊、HVOF等技术及性能。因为涂层系统设计主要是对管道基体和涂层材料与工艺进行选配,同时匹配参数也是对涂层系统的主要评价指标,所以本文对热膨胀系数、导热系数、结合强度、孔隙率、服役寿命以及经济性等参数进行了系统评价,并阐述了涂层结构设计策略,包括防腐涂层的厚度设计、涂层结构设计、涂层材料组分设计等内容。根据涂层防护技术现存的主要问题,提出粉末合成设计-涂层结构设计-服役性能评价一体化研究的重要性;针对目前主要的材料体系设计比较集中于高Cr含量的FeCr系和NiCr系合金的现状,指出应开发以NiCr基辅以W、Mo等元素涂层材料,使其兼具优异的耐腐蚀和抗磨损的综合性能。最后对涂层防护技术的发展前景进行展望。With the National Double Carbon Strategic Goal,waste-to-energy has become a mainstream technology for municipal waste treatment.Ho-wever,a safety problem is the high corrosion thinning in the boiler pipes of waste powerplants,which can result in leakage and bursting.In this paper,the characteristics of the base material and mainstream coating-protection technologies for pipes under high parameter conditions were reviewed based on the boiler corrosion law.In particular,this work focused on inconel overlay welding,induction fusion welding,high-velocity oxygen fuel,and other technologies and their performance.The existing design systems for coating systems match the pipe substrate,coating material,and coating process with the matching parameters as the main evaluation indices.Thus,different parameters,such as the thermal expansion coefficient,thermal conductivity,bond strength,porosity,service life,and economical feasibility,were systematically evaluated.Moreover,their role on the design of anticorrosion coatings,including the thickness,structure,and components,was elucidated.Considering the current problems in coating-protection technologies,an integrated research for powder synthesis and coating structure design,and service performance evaluation was proposed.Based on current system designs focused on FeCr and NiCr alloys with high Cr contents,the addition of W,Mo,and other elements as supplements to NiCr-based coating materials improved the corrosion and wear resistance.Finally,the future prospects for the development of coating-protection technologies are presented.

关 键 词：垃圾电站 防腐涂层 堆焊 感应熔焊 设计策略 评价 

分 类 号：TK224.9[动力工程及工程热物理—动力机械及工程]