文献类型：期刊文献

中文题名：循环冷却水系统换热器锈刺成因分析及控制建议

英文题名：Analysis and Control Suggestion for Rust Thorn Formation in Heat Exchanger of Recirculating Cooling Water System

作者：胡启迪[1];吴小芳[2];江萍[2];黄光团[1]

机构：[1]华东理工大学资源与环境工程学院,上海200237;[2]中国石油化工股份有限公司镇海炼化分公司,宁波315207

年份：2018

卷号：39

期号：4

起止页码：307

中文期刊名：腐蚀与防护

外文期刊名：Corrosion & Protection

收录：CSTPCD;;Scopus;北大核心:【北大核心2017】；

语种：中文

中文关键词：锈刺;换热器;循环冷却水;腐蚀控制

外文关键词：rust thorn;heat exchanger;recirculating cooling water;corrosion control

摘要：为分析某大型石化企业循环冷却水系统换热器上生长锈刺的原因,在含硝酸根和油的模拟循环冷却水中进行了旋转挂片试验,并在此基础上,模拟现场系统运行参数,开展了动态模拟试验。结果表明:锈刺是在现场局部腐蚀较严重的情况下,腐蚀产物受水流冲刷在出水端堆积形成的。建议在现场加大缓蚀剂的投加量,并适当提高流速,这样有利于控制锈刺的生成。
In order to analyze the causes of rust thorn on the heat exchanger of the recirculating cooling water system in a large petrochemical enterprise,rotating coupon tests were performed in simulated recirculating cooling water containing nitrate and oil.In addition,dynamic simulation experiments were also carried out using the simulated operation parameters of the cooling water system in the field.The results show that the rust thorn formed due to the deposition of corrosion products at the tube outlet by water flow when localized corrosion was severe.It is suggested that increasing the dosage of corrosion inhibitor and the flow rate in the field would be beneficial to the control of rust thorn formation.