在不钢管材上对脱硫泥的侵蚀-腐蚀特性进行实验研究
Gaofeng Fan1,2, Jinming Zhang1, Tianlin Yuan1
1State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China.
ACS omega
|February 19, 2024
概括
来自发电厂脱硫泥的废热回收对不钢管道构成侵蚀-腐蚀挑战. 较高的泥温度增加了侵蚀-腐蚀率,影响了有效节约能源的材料选择.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 节能 节能 节能 节能 节能
背景情况:
- 发电厂的低级废热回收对于节能和减少排放至关重要.
- 使用除硫泥用于废热回收提供了巨大的潜力,但也带来了重大挑战.
- 泥中固体成分和离子 (例如,Cl-1) 的侵蚀和腐蚀需要进行材料评估.
研究的目的:
- 实验研究304型,316L型和2205型不钢上脱硫泥的侵蚀-腐蚀特性.
- 分析质量损失和微观形态学,以阐明侵蚀-腐蚀机制.
- 了解泥热交换条件下的材料性能.
主要方法:
- 在三种不钢类型 (304,316L,2205) 上对侵蚀-腐蚀的实验评估.
- 质量损失和表面微观形态学的分析.
- 可变温度和持续时间测试.
主要成果:
- 侵蚀腐蚀率随着泥温度的增加而显著增加.
- 与2205相比,不钢304在耐腐蚀性方面具有更高的温度灵敏度.
- 随着暴露时间的增加,体重减轻率会降低,这表明金属质量变化的趋势正在放缓.
结论:
- 温度是促进脱硫泥系统中侵蚀-腐蚀的关键因素.
- 材料选择需要仔细考虑工作温度和曝光时间.
- 这项研究提供了关于不钢在泥热交换应用中的侵蚀-腐蚀行为的见解.
相关概念视频
02:49Corrosion
24.3K
The degradation of metals due to natural electrochemical processes is known as corrosion. Rust formation on iron, tarnishing of silver, and the blue-green patina that develops on copper are examples of corrosion. Corrosion involves the oxidation of metals. Sometimes it is protective, such as the oxidation of copper or aluminum, wherein a protective layer of metal oxide or its derivatives forms on the surface, protecting the underlying metal from further oxidation. In other cases, corrosion is...
24.3K
01:08Sample Preparation for Analysis: Advanced Techniques
343
Accurate analysis of complex samples often requires advanced preparation techniques to achieve reliable and reproducible results. Samples containing inorganic or organic materials can be challenging to dissolve or decompose effectively. Standard sample preparation methods include acid digestion, fusion, dry ashing, and wet digestion.
Acid digestion with strong acids is commonly used to dissolve inorganic materials that are insoluble (do not dissolve) in water. This method can be useful for...
Acid digestion with strong acids is commonly used to dissolve inorganic materials that are insoluble (do not dissolve) in water. This method can be useful for...
343