循环冷却水处理在线监控评价设备的开发

doi:10.11949/j.issn.0438-1157.20141859

化工学报 ›› 2015, Vol. 66 ›› Issue (7): 2649-2655.DOI: 10.11949/j.issn.0438-1157.20141859

循环冷却水处理在线监控评价设备的开发

曹生现¹, 赵振超¹, 李思博¹, 陈岩飞¹, 付从伟², 任纪兵², 冯保住²

1 东北电力大学自动化工程学院, 吉林省吉林市 132012;
2 山东华聚能源股份有限公司, 山东邹城 273500

收稿日期:2014-12-15 修回日期:2015-04-03 出版日期:2015-07-05 发布日期:2015-07-05
通讯作者: 曹生现
基金资助:
国家自然科学基金项目(51376042,51176028)。

Development of online monitoring and evaluation device for treatment of circulating cooling water

CAO Shengxian¹, ZHAO Zhenchao¹, LI Sibo¹, CHEN Yanfei¹, FU Congwei², REN Jibing², FENG Baozhu²

1 School of Automation Engineering, Northeast Dianli University, Jilin 132012, Jilin, China;
2 Shandong Huaju Nengyuan Co. Ltd., Zoucheng 273500, Shandong, China

Received:2014-12-15 Revised:2015-04-03 Online:2015-07-05 Published:2015-07-05
Supported by:
supported by the National Natural Science Foundation of China (51376042, 51176028).

摘要/Abstract

摘要：

开发了一种新型循环冷却水处理在线监控评价设备,用于水处理对策在线评价、优化与核心水质参数在线监控。该装置以电厂凝汽器循环冷却水的实际流态、水质、金属材质、换热强度为基础,对换热器污垢热阻、腐蚀速率及核心水质参数(pH、ORP、浓缩倍率)进行在线实时监测,以此为依据,对水处理剂加药浓度在线评价,并实时调整。设计了监控系统硬件,包括:污垢热阻检测器、腐蚀速率检测器、自动加药装置、水质参数分析仪表和工控机等,利用Delphi7.0编制了系统软件,可完成监控参数设置、实时显示、在线控制、历史数据查询、报表打印等。该装置应用于山东兖矿集团兴隆庄电厂1号机组,实验结果表明:该装置可实时评价水处理加药方案,有效地抑制污垢热阻生长,减轻换热器腐蚀,瞬时污垢热阻 <1.5×10^-4 m²·K·W^-1,腐蚀速率<0.005 mm·a^-1,循环冷却水浓缩倍率由2倍提高到4倍,优化了水处理方案,提高了电厂经济效益。

关键词: 循环冷却水处理, 在线监控, 优化, 结垢, 腐蚀

Abstract:

A new online monitoring and evaluation device for the treatment countermeasures of circulating cooling water was developed,which is used for evaluation and optimization of water treatment countermeasures, and online monitoring of the core water quality parameters. This device can online monitor the heat exchanger fouling resistance, corrosion rate and core water quality parameters (pH, ORP, concentrated ratio) in real-time based on the fluid state, water quality, metal materials and heat transfer intensity of the power plant circulating cooling water, and can evaluate and adjust the concentration of the water treatment agent online. The monitoring system hardware including fouling resistance detector, corrosion rate detector, automatic dosing device, analysis instrumentation of water quality parameters and industrial computer was designed. And the software was developed by Delphi7.0 which can carry out monitoring parameter settings, real-time display, online control, historical data query and report printing. This device has been used in Unit 1 of the Power Plant of Shandong Yancon Croup Co., Ltd. The experimental results showed that the instantaneous fouling resistance and corrosion rate were less than 1.5×10^-4 m²·K·W^-1 and 0.005 mm·a^-1, respectively, and the concentration ratio of the circulating cooling water can increase from 2 times to 4 times. This device can evaluate the water treatment dosing programs in real-time, inhibit the growth of fouling resistance effectively, reduce the corrosion of the heat exchanger and improve the economic efficiency of power plants.

Key words: circulating cooling water treatment, online monitoring, optimization, fouling, corrosion

中图分类号:

TP23

曹生现, 赵振超, 李思博, 陈岩飞, 付从伟, 任纪兵, 冯保住. 循环冷却水处理在线监控评价设备的开发[J]. 化工学报, 2015, 66(7): 2649-2655.

CAO Shengxian, ZHAO Zhenchao, LI Sibo, CHEN Yanfei, FU Congwei, REN Jibing, FENG Baozhu. Development of online monitoring and evaluation device for treatment of circulating cooling water[J]. CIESC Journal, 2015, 66(7): 2649-2655.

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循环冷却水处理在线监控评价设备的开发

Development of online monitoring and evaluation device for treatment of circulating cooling water

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