发电厂尿素水解制氨系统中尿素氯化物含量测定方法的研究

曹松彦; 马珍珍; 李杰; 乔越; 杨俊; 陈文中; 韩霜; 马翼超; 王彤; 宋飞

doi:10.19666/j.rlfd.202505088

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发电厂尿素水解制氨系统中尿素氯化物含量测定方法的研究

热力发电 2026年55卷第3期页码：158-164

新型发电技术 | 更新时间：2026-08-07

- 发电厂尿素水解制氨系统中尿素氯化物含量测定方法的研究
- 发电厂尿素水解制氨系统中尿素氯化物含量测定方法的研究
- 作者机构：
  
  1. 西安热工研究院有限公司
  2. 华能重庆珞璜发电有限责任公司
  3. 湛江中粤能源有限公司
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.202505088
  中图分类号： TQ113.2;X773
- 纸质出版：2026
- 稿件说明：
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[1]曹松彦,马珍珍,李杰,等.发电厂尿素水解制氨系统中尿素氯化物含量测定方法的研究[J].热力发电,2026,55(03):158-164.
[1]曹松彦,马珍珍,李杰,等.发电厂尿素水解制氨系统中尿素氯化物含量测定方法的研究[J].热力发电,2026,55(03):158-164. DOI： 10.19666/j.rlfd.202505088.

DOI：10.19666/j.rlfd.202505088.

摘要

研究建立了一种基于氯化银分光光度法测定尿素中氯化物质量浓度的新方法。该方法具有操作简单、快速等特点，一组尿素样品中的氯化物检测可在20 min内完成。检测范围在0.07～2.00 mg/L，检出限为0.02 mg/L，针对氯离子质量浓度约0.05 mg/L的10%尿素溶液进行18次重复检测。结果显示，相对标准偏差为8.30%，对10%尿素溶液的氯离子检测回收率在86%～110%。该方法准确度、灵敏度均满足火电厂对尿素水解制氨系统用尿素质量的要求，可作为尿素中氯化物含量的测定方法。

Abstract

In-factory testing of chloride ions in urea for urea-to-ammonia hydrolysis systems in power plants is a crucial task

and how to quickly and accurately detect chloride ions content remains an urgent problem to be solved. This study has proposed a new method for determining the mass concentration of chlorides in urea using silver chloride spectrophotometry. This method is simple and fast

capable of detecting the chloride content in a set of urea samples in about 20 minutes

with a detection range of 0.07 mg/L to 2.00 mg/L and a detection limit of 0.02 mg/L. Eighteen repeated tests were conducted on a 10% urea solution with a chloride ion mass concentration of approximately 0.05 mg/L. The results indicated a relative standard deviation of 8.30%. The recovery rate of spiked tests in the 10% urea solution ranged from 86% to 110%. Both the accuracy and sensitivity of this method meet the quality requirements for urea used in the urea-to-ammonia hydrolysis systems in thermal power plants

making it a suitable method for determining chlorides in urea.

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references

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