关于循环水浓缩倍率测试方法对比的浅析

A brief analysis of the comparison of circulation water concentration ratio test methods

摘要

燃煤火力发电机组开式循环冷却系统浓缩倍率是控制循环水水质的一项重要指标，对防止凝汽器的结垢和节水起重要作用，而浓缩倍率数据主要是靠化验班每天通过测试循环水和补充水的Cl^-浓度或硬度来计算得到，运行人员不能实时掌握浓缩倍率数据，不利于跟随机组负荷、水质情况及时调整和控制，会造成浓缩倍率忽高忽低，对防止凝汽器的结垢和节水非常不利，所以想寻找一种可以实时在线监测的指标来计算和控制浓缩倍率。通过本文分析可以得出采用循环水、补充水的硬度、电导率计算浓缩倍率，两者趋势基本一致。

Abstract

The concentration ratio of the open-cycle cooling system in coal-fired power generation units is a critical indicator for controlling the quality of circulating water. It plays a vital role in preventing condenser scaling and conserving water. The concentration ratio data is primarily obtained by the laboratory testing the Cl^- concentration or hardness of the circulating water and makeup water daily. However, operators cannot monitor this data in real time, which hinders timely adjustments and control based on unit load and water quality conditions. This can lead to fluctuations in the concentration ratio, which is detrimental to preventing condenser scaling and conserving water. Therefore, there is a need for an indicator that can be monitored in real time to calculate and control the concentration ratio. This article suggests using the hardness and conductivity of the circulating water and makeup water to calculate the concentration ratio, as these two indicators show consistent trends.

关键词

循环水 / 浓缩倍率 / 硬度 / 电导率

Key words

circulating water / concentration ratio / hardness / conductivity

参考文献

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