垃圾电站锅炉腐蚀速度及关键影响因素研究进展

doi:10.11902/1005.4537.2021.245

中国腐蚀与防护学报

2022, Vol. 42

Issue (5): 839-844 DOI: 10.11902/1005.4537.2021.245

海洋材料腐蚀与防护专栏

本期目录 | 过刊浏览

垃圾电站锅炉腐蚀速度及关键影响因素研究进展

曲作鹏¹(

), 田欣利², 王永田¹, 赵祎璠¹, 王磊³, 张贝贝¹, 王海军²

^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
^2.陆军装甲兵学院装备再制造技术国防科技重点试验室北京 100072
^3.上海电力设计院有限公司上海 200025

Research Progress on Corrosion Behavior and Key Influencing Factors for Structural Materials of Waste Power Plant Boiler

QU Zuopeng¹(

), TIAN Xinli², WANG Yongtian¹, ZHAO Yifan¹, WANG Lei³, ZHANG Beibei¹, WANG Haijun²

^1.National Engineering Laboratory for Biomass Power Generation Equipment, North China Electric Power University, Beijing 102206, China
^2.Key Laboratory of National Defense Technology for Equipment Remanufacturing Technology, Army Academy of Armored Forces, Beijing 100072, China
^3.POWERCHINA Shanghai Electric Power Engineering Co. Ltd., Shanghai 200025, China

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摘要:

针对垃圾电站锅炉受热面日益严重的腐蚀问题,以经典的腐蚀曲线为对象,对垃圾炉四管受热面的腐蚀速率规律做了分析和归纳,并对在全温域内随管道壁温变化的腐蚀机理进行了综述。提炼出腐蚀速度曲线具有双峰、突变、虚实等三个显著特征。根据从低到高的壁温变化,对腐蚀速率按照电化学腐蚀和高温腐蚀两部分分别进行了评述并分段解构,根据不同壁温度区间腐蚀规律和机理进行了系统论述。探讨了烟温对腐蚀速率的影响,最后对腐蚀速率曲线的时效性进行了进一步的探讨。

关键词 ：垃圾焚烧, 腐蚀速度, 壁温, 烟温, 氯腐蚀, 碱金属, 积灰

Abstract：

In view of the increasingly serious corrosion problem of the heating surface of structural materials for waste power plant boilers, the corrosion regulation of the four kinds of tubes, related with the water wall, superheater, reheater and economizer for waste power plant boilers, were analyzed and summarized by taking the classical corrosion rate curves as reference, and the corrosion mechanism varying with the pipe wall temperature in the whole operation temperature range is also summarized. It is concluded that the corrosion rate curve has three remarkable characteristics: bimodal, abrupt change, and virtual-reality. According to the change of wall temperature from low to high, the corrosion rate can be interpreted in terms of electrochemical corrosion and high temperature corrosion respectively. Meanwhile, the corrosion features and the relevant mechanism are discussed by taking the variation of wall temperature range into account. The effect of flue gas temperature on the corrosion rate is discussed, and several key factors affecting the corrosion rate, such as fluid medium temperature, ash accumulation, oxide scale and temperature gradient are analyzed, and the timeliness of corrosion rate curves is discussed in detail.

Key words： garbage incineration corrosion speed wall temperature smoke temperature chlorine corrosion alkali metal dust

收稿日期: 2021-09-18

ZTFLH:

TK224.9

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

通讯作者: 曲作鹏 E-mail: z.qu@ncepu.edu.cn

Corresponding author: QU Zuopeng E-mail: z.qu@ncepu.edu.cn

作者简介: 曲作鹏,男,1980年生,副教授,博士

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引用本文:

曲作鹏, 田欣利, 王永田, 赵祎璠, 王磊, 张贝贝, 王海军. 垃圾电站锅炉腐蚀速度及关键影响因素研究进展[J]. 中国腐蚀与防护学报, 2022, 42(5): 839-844.
Zuopeng QU, Xinli TIAN, Yongtian WANG, Yifan ZHAO, Lei WANG, Beibei ZHANG, Haijun WANG. Research Progress on Corrosion Behavior and Key Influencing Factors for Structural Materials of Waste Power Plant Boiler. Journal of Chinese Society for Corrosion and protection, 2022, 42(5): 839-844.

链接本文:

https://www.jcscp.org/CN/10.11902/1005.4537.2021.245 或 https://www.jcscp.org/CN/Y2022/V42/I5/839

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图2 不锈钢在450 ℃的腐蚀动力学曲线[3]

图3 烟气温度、管壁温度与腐蚀速率的关系[11]

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