Fireside corrosion behavior of HR3C steel in simulated coal-fired boiler atmospheres with high sulfur concentration

LI Jiang; ZHOU Rongcan; TANG Liying; BI Kai

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Fireside corrosion behavior of HR3C steel in simulated coal-fired boiler atmospheres with high sulfur concentration

更新时间：2025-09-28

- Fireside corrosion behavior of HR3C steel in simulated coal-fired boiler atmospheres with high sulfur concentration
- Thermal Power Generation Vol. 45, Issue 1, Pages: 70-75(2016)
- 作者机构：
  
  西安热工研究院有限公司
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK229.2
- Published：2016
- 稿件说明：
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LI Jiang, ZHOU Rongcan, TANG Liying, et al. Fireside corrosion behavior of HR3C steel in simulated coal-fired boiler atmospheres with high sulfur concentration[J]. Thermal power generation, 2016, 45(1): 70-75.
DOI：

LI Jiang, ZHOU Rongcan, TANG Liying, et al. Fireside corrosion behavior of HR3C steel in simulated coal-fired boiler atmospheres with high sulfur concentration[J]. Thermal power generation, 2016, 45(1): 70-75. DOI：

摘要

在模拟燃用贵州六枝高硫煤的650

700℃下烟气/煤灰腐蚀环境中

对超超临界机组锅炉用HR3C钢进行了600h的烟气腐蚀试验。通过腐蚀动力学曲线、X射线衍射(XRD)、扫描电镜(SEM)、X射线能谱(EDS)、拉曼光谱(Raman)等研究了HR3C钢的高温烟气腐蚀行为及腐蚀产物生成机理。结果表明:随着温度升高

HR3C钢腐蚀速率加快;650℃腐蚀以高温氧化为主

基体表面形成一层致密的保护性氧化膜

其主要成分是Cr2O3与Fe2O3的混合物;温度升高至700℃

腐蚀产物由单层结构转化为双层结构

外层富含Fe

内层富含Cr;HR3C钢在700℃发生一定程度的低温热腐蚀

但腐蚀速率低于国外报道结果

仍具有良好的抗烟气腐蚀能力。

Abstract

The corrosion tests for HR3 Csteel used commonly in ultra supercritical unit boiler were carried out

in simulated flue/ash environments of firing high sulfur Liuzhi coal at 650 ℃ and 700 ℃.The fireside corrosion behavior and products formation mechanism were investigated

by corrosion kinetic curves

XRD

SEM

EDS and Raman analysis.The results indicate that

the fireside corrosion rate accelerated with the increasing temperature.The protective Cr_2O_3 and Fe_2O_3scales formed on the surface at 650 ℃.As the temperature increased

the structure of the oxide film varied from a single layer to double layers

with Fe rich in the outer layer and Cr rich in the inner layer.Low temperature hot corrosion occurred at 700 ℃

but the fireside corrosion rate was lower than the reported results.The HR3 Csteel had superior corrosion resistance at 700 ℃.

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