CORROSION IN THE PROCESS OF MIXEDLY BURNING BIOMASS WITH COAL AND PREVENTIVE MEASURES THEREOF

YUE Maozhen; WANG Yongzheng; BIAN Sufang; TIAN Sule; LU Chen College of Energy and Power Engineering

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CORROSION IN THE PROCESS OF MIXEDLY BURNING BIOMASS WITH COAL AND PREVENTIVE MEASURES THEREOF

更新时间：2025-09-28

- CORROSION IN THE PROCESS OF MIXEDLY BURNING BIOMASS WITH COAL AND PREVENTIVE MEASURES THEREOF
- Thermal Power Generation Vol. 40, Issue 5, Pages: 35-38(2011)
- 作者机构：
  
  山东大学能源与动力工程学院
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK228
- Published：2011
- 稿件说明：
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YUE Maozhen, WANG Yongzheng, BIAN Sufang, et al. CORROSION IN THE PROCESS OF MIXEDLY BURNING BIOMASS WITH COAL AND PREVENTIVE MEASURES THEREOF[J]. Thermal power generation, 2011, 40(5): 35-38.
DOI：

YUE Maozhen, WANG Yongzheng, BIAN Sufang, et al. CORROSION IN THE PROCESS OF MIXEDLY BURNING BIOMASS WITH COAL AND PREVENTIVE MEASURES THEREOF[J]. Thermal power generation, 2011, 40(5): 35-38. DOI：

摘要

生物质中K和Cl的含量较高

在燃烧过程中可引起过热器受热面的严重腐蚀

限制了其在电厂中的大规模利用。生物质与煤混燃技术对上述问题有所改善

当生物质掺混比例较低时

其腐蚀机理与煤燃烧时相似

腐蚀主要是由氧化和硫化作用引起;当生物质掺混比例较高时

腐蚀主要由KCl引起

氯可穿透金属表面的保护性氧化膜

加速腐蚀。通过对生物质与煤混燃腐蚀机理的综合分析

提出了相应的防治措施:(1)加入添加剂;(2)对燃料进行预处理;(3)在金属表面喷涂耐腐蚀涂层或采用耐腐蚀钢材;(4)调整运行参数。

Abstract

There is a large content of K and Cl in biomass

which may result in severe corrosion on the heating surface of superheater in the burning process

limiting large-scale application of biomass in thermal power plants.The technology of mixedly burning biomass with coal can improve the above-mentioned problem.In the event the proportion ratio of mixedly burning biomass is lower

the corrosion mechanism is similar to that of burning coal

the corrosion is mainly caused by sulfurization and oxidation in case of proportion ratio of biomass is higher

the corrosion is mainly caused by KCl

and the chlorine may penetrate the oxide protective film

to accelerate the said corrosion.Through comprehensive analysis of the corrosion mechanism in mixedly burning biomass with coal

corresponding protective measures have been proposed as follows:1) using additives;2) carrying out pretreatment of the fuels;3) spraying corrosion-resistant coatings on the metallic surface

or using corrosion-resistant steels;4) regulating operating parameters.

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