供热管网化学缓蚀剂阻垢及节能应用评价  

Evaluation of Scale Inhibition and Energy-Saving Application of Chemical Corrosion Inhibitors in Heating Pipeline Networks

作　　者：李美莹 汪永金 王艳娥 LI Meiying;WANG Yongjin;WANG Yan'e(Xi'an Siyuan College,Xi'an Shaanxi 710038,China)

机构地区：[1]西安思源学院,陕西西安710038

出　　处：《当代化工》2025年第2期323-327,共5页Contemporary Chemical Industry

基　　金：陕西省教育厅2023年度一般专项科研计划项目(项目编号:23JK0618)。

摘　　要：分析了供热管道腐蚀失效特征及缓蚀剂缓蚀机制,测定了不同缓蚀剂条件下挂片腐蚀特性,优化了混合型缓蚀剂方案,并进行电化学测试。结合具体工程案例,分析了管网改造前后在燃煤量、二氧化碳排放及运行成本等方面的效用。结果表明:缓蚀阻垢机制与过饱和度、成核与晶体生长过程密切相关。单一药剂的缓蚀性能较差,但其间缓蚀协同作用明显,复配缓蚀性能优于各单剂。影响因素大小排序为A> D> C> B,最优方案为A3B3C3D3,即每种药剂都使用其最高水平的投加量。工程应用案例改造前后,供热用煤量可节约1/2,二氧化碳统计排放量可减排7 371.9 t,运行成本可显著降低约15%。The corrosion failure characteristics of heating pipelines and the corrosion inhibition mechanism of corrosion inhibitors were analyzed.The corrosion characteristics of hanging pieces under different corrosion inhibitor conditions were measured,and the mixed corrosion inhibitor scheme was optimized.Electrochemical tests were conducted.Based on specific engineering cases,the effectiveness of pipeline network renovation before and after in terms of coal consumption,carbon dioxide emissions,and operating costs was analyzed.The results showed that the corrosion and scale inhibition mechanism were closely related to supersaturation,nucleation,and crystal growth processes.The corrosion inhibition performance of a single agent was poor,but the synergistic effect of corrosion inhibition was obvious,and the composite corrosion inhibition performance was better than each single agent.The order of influencing factors was A>D>C>B,and the optimal solution was A3B3C3D3,which meant that each agent used its highest level of dosage.Before and after the transformation of engineering application cases,the coal consumption for heating could be saved by half,the statistical emission of carbon dioxide could be reduced by 7 371.9 t,and the operating cost could be significantly reduced by about 15%.

关 键 词：传热 腐蚀 化学过程 二氧化碳 

分 类 号：TQ031[化学工程]