摘要
垃圾焚烧发电技术在解决当前城市生活废弃物污染问题以及调整城市能源结构中起着重要作用。垃圾成分复杂,在焚烧过程中产生大量腐蚀性气体和熔融沉积盐,对垃圾焚烧锅炉内的水冷壁管及过热器管造成严重的高温腐蚀。为缓解垃圾焚烧发电过程中金属管材料的高温腐蚀问题,通过电子显微镜、能谱分析仪及X射线衍射仪等现代表征方法,研究垃圾焚烧环境中金属材料的高温腐蚀机理和防护技术。在多种表面处理技术中,激光熔覆技术制备镍基合金熔覆层展现出了较大的发展潜力,激光熔覆技术制备的Inconel625镍基合金熔覆层内部无明显缺陷,与基体形成良好的冶金结合界面,应用于水冷壁管和过热器管表面,可有效降低垃圾焚烧锅炉设备构件的腐蚀问题,提高锅炉的焚烧效率以及安全性。
Waste incineration power generation technology plays an important role in solving the current urban solid waste pollution problem and adjusting the urban energy structure.The composition of waste is complex,and a large number of corrosive gases and molten deposition salts are generated in the incineration process,which causes serious high-temperature corrosion to the water-cooled wall tubes and superheater tubes in the waste incineration boiler.In order to alleviate the high temperature corrosion problem of metal tube materials in the waste incineration power generation,the high temperature corrosion mechanism and protection technology of metal materials in waste incineration environment were studied by modern characterization methods such as electron microscope,energy spectrum analyzer and X-ray diffraction.Among various surface treatment technologies,laser cladding technology has shown great potential for the development of the nickel-base alloy cladding layer.The Inconel625 nickel-base alloy cladding layer prepared by laser cladding technology had no obvious defects inside and forms a good metallurgical bonding interface with the substrate.It was applied to the surface of water-cooled wall tubes and superheater tubes,which can effectively reduce the corrosion problem of equipment components of waste incineration boiler and improve the incineration efficiency and safety of the boiler.
作者
明玥
MING Yue(Shandong Electric Power Engineering Consulting Institute Co.,Ltd.,Jinan 250013,China)
出处
《山东电力技术》
2023年第6期58-62,74,共6页
Shandong Electric Power
关键词
垃圾焚烧发电
高温腐蚀
激光熔覆
Inconel625
waste incineration power generation
high temperature corrosion
laser cladding
Inconel625
