石油化工高等学校学报 ›› 2025, Vol. 38 ›› Issue (4): 1-9.DOI: 10.12422/j.issn.1006-396X.2025.04.001

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油品种类及其流量对REAC系统流动腐蚀风险的影响

闻华宇1, 洪叶江2, 李锐1, 刘骁飞1   

  1. 1.浙江理工大学 机械工程学院,浙江 杭州 310018
    2.绍兴市柯桥区环境保护监测站,浙江 绍兴 312025
  • 收稿日期:2024-12-30 修回日期:2025-04-19 出版日期:2025-08-25 发布日期:2025-07-24
  • 通讯作者: 刘骁飞
  • 作者简介:闻华宇(2003⁃),男,从事冷换设备流动腐蚀预测、特种设备失效分析、优化设计等方面的研究;E⁃mail:
  • 基金资助:
    国家重点研发计划项目(2023YFC3010501);浙江省重点研发计划项目(2024C03122)

The Influence of Oil Types and Their Flow Rates on the Flow Corrosion Risk of REAC Systems

Huayu WEN1, Yejiang HONG2, Rui LI1, Xiaofei LIU1   

  1. 1.School of Mechanical Engineering,Zhejiang Sci?Tech University,Hangzhou Zhejiang 310018,China
    2.Shaoxing Keqiao District Environmental Protection Monitoring Station,Shaoxing Zhejiang 312025,China
  • Received:2024-12-30 Revised:2025-04-19 Published:2025-08-25 Online:2025-07-24
  • Contact: Xiaofei LIU

摘要:

针对加氢反应流出物空冷器(REAC)系统的腐蚀失效问题,采用逆序倒推法构建典型工艺仿真模型,研究了油品种类及其流量对系统内腐蚀性组分分布、铵盐结晶温度、冲蚀风险等的影响机制。结果表明,油品流量的变化不改变腐蚀性组分的水相分布,不会增加系统冲蚀风险;油品流量对铵盐结晶温度的影响不明显,增大油品流量不会增加系统结盐风险;当蜡油流量增大时,腐蚀因子K显著减小,使系统的腐蚀风险降低;蜡油流量对空冷器出口水相的NH4HS质量分数影响较大,NH4HS质量分数在高温区随着石脑油流量的增大而减小,而在低温区随着石脑油流量的增大而增大;当柴油、石脑油流量增大时,出口水相的pH升高,而蜡油流量增大时出口水相的pH降低。建议加工处理原油时适当增大蜡油流量,同时增大柴油流量或注水量,以降低系统的腐蚀失效风险。

关键词: 加氢反应流出物空冷器, 铵盐结晶, 流动腐蚀, Aspen Plus, 数值模拟

Abstract:

To address the corrosion failure issues in hydrogenation reaction effluent air cooler (REAC)systems, a typical process simulation model was constructed using the reverse order deduction method. This study investigated the influence mechanisms of different oil flow rates on the distribution of corrosive components within the system, ammonium salt crystallization temperature, and erosion risks. The results indicate that variations in oil flow rate do not significantly affect the aqueous distribution of corrosive components or increase the system's erosion risk. Additionally, the oil flow rate has minimal impact on the crystallization temperature of ammonium salts, meaning higher flow rates do not elevate the risk of salt formation. However, increasing the flow rate of vacuum gas oil (VGO) markedly reduces the corrosion factor (K), thereby lowering the overall corrosion risk. The VGO flow rate also has a pronounced influence on the aqueous NH?HS concentration at the air cooler outlet, whereas the effect of naphtha flow rate differs from that of diesel and VGO. Notably, raising the flow rates of diesel and naphtha increases the system pH, while increasing VGO flow rate decreases it. To mitigate corrosion risks, it is recommended to moderately increase the VGO content during crude oil processing while simultaneously boosting either the diesel content or injection water volume.

Key words: Hydrogenation reaction effluent air cooler, Ammonium salt crystallization, Flow corrosion, Aspen Plus, Numerical simulation

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引用本文

闻华宇, 洪叶江, 李锐, 刘骁飞. 油品种类及其流量对REAC系统流动腐蚀风险的影响[J]. 石油化工高等学校学报, 2025, 38(4): 1-9.

Huayu WEN, Yejiang HONG, Rui LI, Xiaofei LIU. The Influence of Oil Types and Their Flow Rates on the Flow Corrosion Risk of REAC Systems[J]. Journal of Petrochemical Universities, 2025, 38(4): 1-9.

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