Migration characteristics of chloride ions in effluent of ammonium type operation of condensate polishing

左选国; 张龙明; 贾兰

doi:10.19666/j.rlfd.202411242

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Migration characteristics of chloride ions in effluent of ammonium type operation of condensate polishing

Thermal Power Generation Vol. 54, Issue 9, Pages: 164-170(2025)

更新时间：2026-08-11

- Migration characteristics of chloride ions in effluent of ammonium type operation of condensate polishing
- 作者机构：
  
  1. 国能宁东第一发电有限公司
  2. 浙江西热利华智能传感技术有限公司
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.202411242
  CLC： X773
- Published：2025
- 稿件说明：
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[1]左选国,张龙明,贾兰.凝结水精处理铵型运行出水氯离子迁移特性[J],2025,54(09):164-170.
[1]左选国,张龙明,贾兰.凝结水精处理铵型运行出水氯离子迁移特性[J],2025,54(09):164-170. DOI： 10.19666/j.rlfd.202411242.

DOI：10.19666/j.rlfd.202411242.

摘要

实现精处理出水氯离子指标的有效监控，对保障精处理出水水质、运行工艺调整、延长运行周期等具有关键作用。根据离子交换平衡理论，分析比对了精处理氢型与铵型运行方式的运行特点、出水水质以及树脂再生度要求；并通过实验室模拟以及某电厂精处理混床运行周期跟踪试验，重点研究了精处理出水氯离子迁移特性。结果表明：氢型阶段树脂再生度要求低，该阶段主要以除盐为主，不易发生漏氯现象；转化阶段随着出水pH值不断升高，对树脂再生度要求也不断提高，当凝结水中含有氯离子时容易发生氯离子的溢出现象；铵型运行时混床不再以除盐为主，出水氯离子质量浓度与凝结水相当。因此，对于精处理出水(尤其是铵型运行时)，实现氯离子有效监控对于保障出水水质是必要的，同时将氯离子作为监控指标之一，不仅可有效保障精处理出水水质，同时可以指导精处理运行工艺调整，在保障机组安全运行的前提下达到显著延长精处理运行周期的目的。

Abstract

Effective monitoring of chloride ion indicators in precision treated effluent plays a crucial role in ensuring the quality of the effluent

adjusting operational processes

and extending operating cycles. According to the theory of ion exchange equilibrium

the operating characteristics

effluent quality

and resin regeneration requirements of hydrogen type and ammonium type operation modes for precision treatment were analyzed and compared. Through laboratory simulation experiments and tracking experiments of the operating cycle of a precision treated mixed bed in a certain power plant

the migration characteristics of chloride ions in the effluent of precision treatment were mainly studied. The results show that

the requirement for regeneration degree of resin in the hydrogen stage is low

and the main focus of this stage is desalination

which is not prone to chlorine leakage. As the pH value of the effluent increases during the conversion stage

the requirement for resin regeneration also increases. When the condensate contains chloride ions

chloride ion displacement is prone to occur. During ammonium type operation

the mixed bed no longer focuses on desalination

and the mass concentration of chloride ions in the effluent is equivalent to that in the condensate. Therefore

effective monitoring of chloride ions is necessary for ensuring the quality of effluent water

especially during ammonium type operation. At the same time

using chloride ions as one of the monitoring indicators can not only ensure the quality of effluent water effectively

but also guide the adjustment of precision treatment operation process

and significantly extend the precision treatment operation cycle while ensuring the safe operation of the unit.

关键词

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references

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