Analysis of scaling causes and anti-scaling countermeasures of external cooling system of large-scale synchronous condenser in Northwest region of China

LI Guobin; NIU Zheng; XIE Qiang; ZHENG Jinchi; XIA Zhonglin; WANG Yanming; LIANG Bowen; LUO Haiping; MA Shuangchen

doi:10.19666/j.rlfd.202309143

English

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Analysis of scaling causes and anti-scaling countermeasures of external cooling system of large-scale synchronous condenser in Northwest region of China

Thermal Power Generation Vol. 53, Issue 3, Pages: 167-176(2024)

更新时间：2025-09-28

- Analysis of scaling causes and anti-scaling countermeasures of external cooling system of large-scale synchronous condenser in Northwest region of China
- 作者机构：
  
  1. 国网新疆电力有限公司电力科学研究院
  2. 国网新疆电力有限公司
  3. 华北电力大学(保定)环境科学与工程系
  4. 国网新疆电力有限公司超高压分公司
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.202309143
  CLC： TM721.1
- Published：2024
- 稿件说明：
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LI Guobin, NIU Zheng, XIE Qiang, et al. Analysis of scaling causes and anti-scaling countermeasures of external cooling system of large-scale synchronous condenser in Northwest region of China[J]. Thermal Power Generation, 2024, 53(3): 167-176.
DOI：

LI Guobin, NIU Zheng, XIE Qiang, et al. Analysis of scaling causes and anti-scaling countermeasures of external cooling system of large-scale synchronous condenser in Northwest region of China[J]. Thermal Power Generation, 2024, 53(3): 167-176. DOI： 10.19666/j.rlfd.202309143.

摘要

调相机外冷水系统换热器和冷却塔填料层表面结垢会严重影响冷却塔的换热效率，危及调相机安全运行。为了更有效地提出防垢措施，查明结垢成因，采用扫描电子显微镜-X射线能谱分析仪、X射线衍射分析仪、傅立叶红外光谱仪等表征手段对垢样微观形貌以及化学组分进行检测分析，对循环系统补充水、循环水采用电感耦合等离子体质谱仪以及化学分析方法进行检测分析。测试结果表明：该外冷却系统内结垢的主要成分为CaCO_3、SiO_2以及CaSiO_3；冷却系统结垢与系统循环水没有排污措施，过高浓缩倍率运行以及地区风沙侵入有很大关系。结合上述分析及当地特殊的地理位置与天气条件，提出若干防垢措施与建议，有助于该类冷却系统现场运行时更有针对性地提出防垢措施，保障调相机运维的经济性以及安全性。

Abstract

The fouling of heat exchangers and cooling tower fill surfaces in the external cooling water system of synchronous condenser can significantly impede the heat transfer efficiency of cooling towers

posing a serious threat to the safe operation of synchronous condenser. In order to propose more effective anti-fouling measures and elucidate the causes of fouling

this study employed characterization techniques such as SEM-EDS

XRD

FTIR

etc.

to analyze the microscopic morphology and chemical composition of fouling samples. Additionally

chemical analysis methods and ICP-MS were used to analyze the makeup of makeup water and circulating water in the system. The test results revealed that the primary components of fouling in the external cooling system are CaCO_3

SiO_2 and CaSiO_3. The fouling in the cooling system is closely related to the absence of wastewater discharge measures in the system

high concentration ratios during operation

and the infiltration of regional windblown sand.This research contributes to proposing targeted anti-fouling measures for on-site operation of such cooling systems

ensuring the economic and operational safety of synchronous condenser.

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