| 摘要: |
| 垃圾焚烧发电锅炉水冷壁和过热器管壁的高温腐蚀防护是影响垃圾焚烧炉稳定运行的重要因素。 为提高垃圾焚烧炉运行的安全性,研究者从基材选择、施加表面涂层和温度控制等多方面给出了解决方案,以增加受热面金属管道的使用寿命。 在简介了锅炉高温腐蚀原理的基础上,分别评述了余热锅炉水冷壁和过热器高温腐蚀治理方案的研究进展。 在水冷壁高温腐蚀提治理方法中,敷设浇注料往往会造成烟温后移,恶化尾部烟道腐蚀,而在表面涂层防护技术中,感应重熔技术因其涂层缺陷少、结合强度高、稀释率低,表现出了良好的防腐蚀效果。 余热锅炉过热器受到显著的液相熔盐腐蚀,对于该部位的高温腐蚀治理除了提升材料等级外,应当严格控制入口烟温,适当调节燃烧气氛。 |
| 关键词: 垃圾焚烧发电 高温腐蚀 表面防护 |
| DOI：10.11933/j.issn.1007-9289.20200406001 |
| 分类号:TG174 |
| 文章编号:1007-9289(2020)03-0050-11 |
| 文献标识码:A |
| 基金项目:中央高校基本科研业务费(2020JG003)； 国家重点研发计划(2019YFC1907000) |
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| Research Progress on High-temperature Corrosion Treatment Schemes of Waste to Energy Boilers |
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Qu Zuopeng1, Zhong Rigang2, Wang Lei1, Zhao Wenbo3, Tian Xinli4, Wang Haijun4
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1.National Engineering Laboratory for Biomass Power Generation Equipment, North China Electric Power University, Beijing 102206 , China;2.Shenzhen Energy Environment Co., Ltd., Shenzhen 518031 , China;3.China Metallurgical Construction Research Institute Co., Ltd.Beijing 100088 , China;4.Key Laboratory of National Defense Technology for Equipment Remanu- facturing Technology, Army Academy of Armored Forces, Beijing 100072 , China
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| Abstract: |
| Thermal corrosion protection of water-cooled walls and superheater tube walls is a key issue restricting the stable op- eration of waste to energy boilers. In order to improve the safety of the operation of waste to energy boilers, researchers have pro- vided solutions from the aspects of substrate selection, surface coating and temperature control to increase the service life of metal pipes on the heated surface. Based on the introduction of the principle of high temperature corrosion of boilers, this paper re- views the research progress of high temperature corrosion control for water wall and superheater of waste heat boiler. In the treat- ment method of high temperature corrosion of the water wall, the laying of castables will often cause the flue gas temperature to shift back and worsen the tail flue corrosion. In the surface coating protection technology, the induction remelting technology has less coating defects and high bonding strength and low dilution rate, showing good anti-corrosion effect. The superheater of the waste to energy boiler is subject to significant liquid phase molten salt corrosion. For the treatment of high temperature corrosion at this location, in addition to upgrading the material level, the inlet flue gas temperature should be strictly controlled and the combustion atmosphere should be appropriately adjusted. |
| Key words: waste to energy high temperature corrosion surface protection |
