无磷阻垢剂WS330海水循环冷却阻垢试验研究

doi:10.11930/j.issn.1004-9649.201812001

中国电力 ›› 2019, Vol. 52 ›› Issue (9): 161-166,178.DOI: 10.11930/j.issn.1004-9649.201812001

无磷阻垢剂WS330海水循环冷却阻垢试验研究

唐伟峰¹, 张佳琦², 李飞²

1. 上海电力股份有限公司土耳其煤电项目筹建处, 上海 200010;
2. 纳尔科(中国)环保技术服务有限公司, 上海 200333

收稿日期:2018-12-05 修回日期:2019-01-31 出版日期:2019-09-05 发布日期:2019-09-19
作者简介:唐伟峰(1966-),男,高级工程师,高级技师,从事清洁高效燃煤发电化学基建、运行与检修技术管理及污染物综合治理研究,E-mail:tang_wfeng@163.com;张佳琦(1984-),男,工程师,从事高效环保循环冷却水药剂开发,水处理自动化控制设备及系统监控软件开发,E-mail:zhangjiaqi816@hotmail.com

Experimental Study of Non-phosphorus Scale Inhibitor WS330 for the Seawater Cooling System

TANG Weifeng¹, ZHANG Jiaqi², LI Fei²

1. Shanghai Electric Power Co.,Ltd., Turkey Coal and Electricity Project Preparation Office, Shanghai 200010, China;
2. Nalco (China) Environmental Solutions Co., Ltd., Shanghai 200333, China

Received:2018-12-05 Revised:2019-01-31 Online:2019-09-05 Published:2019-09-19

摘要/Abstract

摘要： 某沿海燃煤电厂采用“烟塔合一”技术，循环冷却水为海水。为确保循环水系统安全、可靠、经济运行，开展了循环水阻垢剂的静态试验与动态模拟试验。选用无磷阻垢剂WS330作为循环水处理阻垢剂，通过静态试验确定阻垢剂剂量，之后在动态模拟装置上进行了多项指标的模拟试验。结果表明：WS330阻垢剂质量浓度维持在8 mg/L、浓缩倍率≤2.5 时，系统运行良好；钛金属换热器的腐蚀速率为2.5×10^–5 mm/年，平均黏附速率为0.33 mg/（cm²·月），污垢热阻值为1.4×10^-5 m²·K/W，均远低于各项指标的上限要求。考虑到现场实际应用中的水质及工况波动，运行时的循环水浓缩倍率建议控制在1.5~2.0。分析认为，“烟塔合一”工程对海水作为循环水浓缩倍率的试验结果影响较小。

关键词: 火电厂, 烟塔合一, 循环冷却水, 无磷阻垢剂, 静态试验, 动态模拟, 极限浓缩倍率

Abstract: The coal-fire power plant located in the coastal are autilized the technology of natural draft cooling tower with flue gas injection and takes, the sea water into its recirculating cooling system. Both the static test and the dynamic simulation test of the scale inhibitor for the recirculating water were performed to ensure the safe, reliable and economic operation of the recirculating water system. WS330 phosphate-free scale inhibitor was used as the scale inhibitor for the recirculating water. The dosage of the scale inhibitor was determined through the static test, and then the simulation tests regarding various performance indices were carried out on the dynamic stimulation device. The test result reveals that the system functions normally if the mass concentration of the WS330 scale inhibitor is maintained at 8 mg/L and the concentration ratio is less than or equivalent to 2.5. With the corrosion rate of the titanium heat exchanger 2.5×10^-5 mm/a, the average adhesion rate 0.33 mg/cm² per month and the fouling resistance 1.4×10^-5 m²·K/W, all the indices above are far below their upper limits. Considering the fluctuation of the water quality and load, it is recommended to maintain the concentration ratio of this system at the range of 1.5~2.0 under normal operations. Finally it is concluded from the analysis that the natural draft cooling tower with flue gas injection had limited impacts on the concentration ratio in the cooling system using seawater as the recirculation cooling water.

Key words: coal-fired power plant, natural draft cooling tower with flue gas injection, recirculating cooling water, phosphate-free scale inhibitor, static test, dynamic simulation, critical concentration cycle

中图分类号:

唐伟峰, 张佳琦, 李飞. 无磷阻垢剂WS330海水循环冷却阻垢试验研究[J]. 中国电力, 2019, 52(9): 161-166,178.

TANG Weifeng, ZHANG Jiaqi, LI Fei. Experimental Study of Non-phosphorus Scale Inhibitor WS330 for the Seawater Cooling System[J]. Electric Power, 2019, 52(9): 161-166,178.

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https://www.electricpower.com.cn/CN/Y2019/V52/I9/161

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无磷阻垢剂WS330海水循环冷却阻垢试验研究

Experimental Study of Non-phosphorus Scale Inhibitor WS330 for the Seawater Cooling System

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无磷阻垢剂WS330海水循环冷却阻垢试验研究

Experimental Study of Non-phosphorus Scale Inhibitor WS330 for the Seawater Cooling System

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