Experimental study on dosing and anticorrosion of direct air cooled condenser

WANG Yuanyuan; HU Zhenhua; LI Junwan; JI Dingxi; LI Jianbo; LIU Huan

doi:10.19666/j.rlfd.202408197

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Experimental study on dosing and anticorrosion of direct air cooled condenser

更新时间：2025-12-26

- Experimental study on dosing and anticorrosion of direct air cooled condenser
- Thermal Power Generation Vol. 54, Issue 4, Pages: 179-185(2025)
- 作者机构：
  
  1. 西安益通热工技术服务有限责任公司
  2. 西安热工研究院有限公司
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.202408197
  CLC： TM621
- Published：2025
- 稿件说明：
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WANG Yuanyuan, HU Zhenhua, LI Junwan, et al. Experimental study on dosing and anticorrosion of direct air cooled condenser[J]. Thermal Power Generation, 2025, 54(4): 179-185.
DOI：

WANG Yuanyuan, HU Zhenhua, LI Junwan, et al. Experimental study on dosing and anticorrosion of direct air cooled condenser[J]. Thermal Power Generation, 2025, 54(4): 179-185. DOI： 10.19666/j.rlfd.202408197.

摘要

为了解决直接空冷凝汽器腐蚀问题，通过自主研发的动态腐蚀模拟实验装置模拟初凝液实际运行工况，选取汽液分配系数低的碱化剂和氧化剂对碳钢进行流动加速腐蚀实验研究。结果表明：碱化剂和氧化剂均能有效抑制直接空冷凝汽器流动加速腐蚀；水流方向的急剧改变对流动加速腐蚀速率影响较小；同等条件下，碳钢在氧化剂环境中的流动加速腐蚀速率远低于碱化剂环境中的流动加速腐蚀速率；向直接空冷凝汽器中加入氧化剂进行防腐时，单台机组每年可节约生产成本52.37万元。

Abstract

In order to solve the corrosion problem of direct air cooling condensers

the independently developed dynamic corrosion simulation test device is used to simulate the actual operating conditions of the initial condensate

and the alkalizing agent and oxidant with low vapor-liquid distribution coefficient are selected for the flow accelerated corrosion test of carbon steel. The results show that

both alkalizing agent and oxidant can effectively inhibit the accelerated corrosion of direct air-cooled condenser. The rapid change of water flow direction has little effect on the accelerated corrosion rate of flow. Under the same conditions

the flow accelerated corrosion rate of carbon steel in oxidant environment is much lower than that in alkalizer environment. When oxidant is added to the direct air-cooled condenser for anticorrosion

the production cost of a single unit can be saved by 523 700 yuan per year.

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Related Author

ZHANG Shu-guo1

ZHAO Xing-lou2

ZHANG Yan-juan21.College of Environment Science and Engineering

NING Zhi

LI Jianbo

LI Junwan

WANG Wenhu

LI Yan

Related Institution

College of Environmental Science and Engineering, North China Electric Power University

College of Energy and Power Engineering, North China Electric Power University

Anhui Anqing Wanjiang Power Generation Co., Ltd

CNNC Nuclear Power Operation Management Co., Ltd

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