常顶系统流动腐蚀机理预测及防控措施优化

何昌春; 徐磊; 陈伟; 徐晓峰; 欧阳鹏威

doi:10.11949/j.issn.0438-1157.20180785

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常顶系统流动腐蚀机理预测及防控措施优化

表面与界面工程 | 更新时间：2026-07-24

- 常顶系统流动腐蚀机理预测及防控措施优化
- Mechanism prediction of flow-induced corrosion and optimization of protection measures in overhead system of atmospheric tower
- 化工学报 2019年70卷第3期页码：1027-1034
- 作者机构：
  
  1.杭州富如德科技有限公司，浙江杭州 310008
  2.浙江理工大学机械与自动控制学院，浙江杭州 310008
- 作者简介：
  
  何昌春（1980—），男，博士，工程师，hechangchungz@163.com
  徐磊（1988—），男，硕士，工程师，ryanxoo@foxmail.com
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20180785
  中图分类号： TE 986
- 收稿：2018-07-12，
  
  修回：2018-12-11，
  
  网络首发：2026-07-24，
  
  纸质出版：2019-03-05
- 稿件说明：
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何昌春, 徐磊, 陈伟, 徐晓峰, 欧阳鹏威. 常顶系统流动腐蚀机理预测及防控措施优化[J]. 化工学报, 2019, 70(3): 1027-1034

HE Changchun, XU Lei, CHEN Wei, XU Xiaofeng, OUYANG Pengwei. Mechanism prediction of flow-induced corrosion and optimization of protection measures in overhead system of atmospheric tower[J]. CIESC Journal, 2019, 70(3): 1027-1034
何昌春, 徐磊, 陈伟, 徐晓峰, 欧阳鹏威. 常顶系统流动腐蚀机理预测及防控措施优化[J]. 化工学报, 2019, 70(3): 1027-1034 DOI： 10.11949/j.issn.0438-1157.20180785.

HE Changchun, XU Lei, CHEN Wei, XU Xiaofeng, OUYANG Pengwei. Mechanism prediction of flow-induced corrosion and optimization of protection measures in overhead system of atmospheric tower[J]. CIESC Journal, 2019, 70(3): 1027-1034 DOI： 10.11949/j.issn.0438-1157.20180785.

摘要

国内某炼油厂常减压蒸馏装置的常压塔顶冷却系统换热器频繁出现腐蚀失效问题。基于物料衡算原理

采用逆向推导的方法及工艺过程模拟计算分析了该常压塔顶冷却系统的流动腐蚀失效机理，包括露点腐蚀、铵盐结晶沉积垢下腐蚀以及多相流冲刷腐蚀。注水是一种方便且非常有效的破除露点腐蚀和铵盐结晶沉积垢下腐蚀的工艺防护措施。但由于该炼油厂常压塔顶注水量有限，每台换热器采用不同的注水方式，依然出现了流动腐蚀失效问题。通过模拟计算，提出根据不同的注水量应选择不同的注水方式（总管注水、换热器定点注水和程控注水），从而实现该常顶冷却系统长周期稳定运行。

Abstract

Corrosion failures often occur at the overhead cooling system in the atmospheric tower in a domestic oil refinery. Based on the material balance principle

this study uses the reverse derivation method and process simulation to analyze the flow corrosion failure mechanism of the atmospheric pressure overhead cooling system

including dew point corrosion

ammonium salt crystal deposition scale corrosion

and multiphase flow erosion. Generally

water injection is a convenient and efficient measure to eliminate dew-point corrosion and under-deposit corrosion caused by ammonium salt crystallization. Nevertheless

due to the restricted water injection flow rate and various water injection modes for the heat exchangers

corrosion failure still occurred in the overhead cooling system of the atmospheric tower. By simulating the overhead system

the suitable one of three water injection modes (in the main process pipe

in the heat exchangers and by a programming controller) can be determined to realize the long-term stable operation of the overhead cooling system in the atmospheric tower according to a given injected water flow rate.

关键词

Keywords

references

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