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低磷环保循环水处理阻垢缓蚀剂的复配、性能与机理

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  • 1. 华东理工大学机械与动力工程学院; 2. 华东理工大学材料科学与工程学院; 3. 华东理工大学化学工程联合国家重点实验室聚合物加工研究室
李 宾(1964-),博士,副教授,研究方向为功能复合材料、腐蚀与防护、材料表面技术,电话:021-54285922,E - mail:binlee@ecust.edu.cn

收稿日期: 2021-11-25

  修回日期: 2021-12-14

  录用日期: 2021-12-30

  网络出版日期: 2024-01-09

基金资助

 上海市科技创新计划(17DZ1201102)资助

Compounding, Performance and Mechanism Analysis of Scale and Corrosion Inhibitor of Low Phosphorus Environment - Friendly Circulating Water Treatment

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  • a. School of Mechanical and Power Engineering, b. School of Materials Science and Engineering, c. State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China

Received date: 2021-11-25

  Revised date: 2021-12-14

  Accepted date: 2021-12-30

  Online published: 2024-01-09

摘要

为解决工业循环冷却水系统的腐蚀与结垢的问题,选用生物降解性良好的羧乙基硫代丁二酸(CETSA)、丙烯酸 - 2 - 丙烯酰胺 - 2 - 甲基丙磺酸共聚物(AA/AMPS)、聚环氧琥珀酸(PESA)、2 - 膦酸基丁烷 - 1,2,4 - 三羧酸(PBTCA)、月桂酰肌氨酸钠(LS)、甲基苯并三氮唑钠盐(TTA - Na)和七水硫酸锌作为复合阻垢缓蚀剂的组分进行复配,采用GB/T 16632-2008和GB/T 18175-2014测试了其缓蚀及阻垢性能。结果显示:较优的阻垢缓蚀剂组合为CETSA 10 mg/L,AA/AMPS 14 mg/L,PESA 20 mg/L,PBTCA 4 mg/L,LS 10 mg/L,TTA - Na 10 mg/L,七水硫酸锌(以Zn2+计) 1 mg/L,其阻垢率为96.35%,腐蚀速率为0.007 2 mm/a,缓蚀率为99.68%,其缓蚀阻垢性能优良,且对环境友好。电化学测试结果表明复合阻垢缓蚀剂为阴极型缓蚀剂。SEM观测表明复合阻垢缓蚀剂能在碳钢表面形成保护膜,并能吸附在碳酸钙晶体上,使其无法正常长大。

本文引用格式

陈哲, 李宾, 袁晓, 柳翠, 沈春银 . 低磷环保循环水处理阻垢缓蚀剂的复配、性能与机理[J]. 材料保护, 2022 , 55(5) : 99 -105 . DOI: 10.16577/j.issn.1001-1560.2022.0131

Abstract

For the purpose of solving the problem of corrosion and scaling of the industrial circulating cooling water system, the biodegradable materials such as carboxyethylthiosuccinic acid (CETSA), acrylic acid - 2 - acrylamide - 2 - methylpropanesulfonic acid copolymer (AA/AMPS), polyepoxysuccinic acid (PESA), 2 - phosphonobutane - 1,2,4 - Tricarboxylic acid (PBTCA), sodium lauroyl sarcosinate (LS) and methylbenzotriazole sodium salt (TTA - Na), as well as zinc sulfate heptahydrate were used as components to compound composite scale and corrosion inhibitors. Meanwhile, the corrosion and scale inhibition properties of inhibitors were tested according to GB/T 16632-2008 and GB/T 18175-2014. Results showed that the optimized formula of scale and corrosion inhibitors was 10 mg/L CETSA, 14 mg/L AA/AMPS, 20 mg /L PESA, 4 mg/L PBTCA, 10 mg/L LS, 10 mg/L TTA - Na and 1 mg/L ZnSO4·7H2O (calculated using the content of Zn2+). In the case of the optimal inhibitor, the scale inhibition rate was 96.35%, the corrosion rate was 0.007 2 mm/a, the corrosi on inhibit ion rate was 99.68%, and the corrosion and scale inhibition performances were good and environment - friendly. Moreover, the electrochemical test results showed that the composite scale and corrosion inhibitor was a cathode type corrosion inhibitor. The SEM observation revealed that the composite scale and corrosion inhibitor could form a protective film on the surface of carbon steel, which could be adsorbed on the calcium carbonate crystals to suppress their development.
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