石油化工设备技术 ›› 2024, Vol. 45 ›› Issue (5): 32-35,40.doi: 10.3969/j.issn.1006-8805.2024.05.007

• 腐蚀与防护 • 上一篇    

304L不锈钢在贫胺液换热器上的耐蚀性研究

田芳勇1,尹琦岭2,朱 军1,陈 龙2   

  1. 1. 中国石油化工股份有限公司中原油田石油工程技术研究院,河南 濮阳 457001;
    2. 中国石油化工股份有限公司中原油田普光分公司,四川 达州 636156
  • 收稿日期:2024-06-10 接受日期:2024-08-30 出版日期:2024-09-15 发布日期:2024-11-08
  • 通讯作者: 朱 军 E-mail:tianfangyong@163.com
  • 作者简介:田芳勇,男,2012 年毕业于兰州理工大学机械制造及其自动化专业,博士,主要从事机电一体化设计和智能注采技术研究工作,正高级工程师。

On Corrosion Resistance of 304L Stainless Steel in Heat Exchanger with Lean Amine Solution

Tian Fangyong1, Yin Qiling2, Zhu Jun1, Chen Long2   

  1. 1. Research Institute of Petroleum Engineering Technology, SINOPEC Zhongyuan Oilfield Company, Puyang, Henan, 457001;
    2. Puguang Branch of SINOPEC Zhongyuan Oilfield Company,Dazhou, Sichuan, 636156
  • Received:2024-06-10 Accepted:2024-08-30 Online:2024-09-15 Published:2024-11-08
  • Contact: Zhu Jun E-mail:tianfangyong@163.com

摘要: 国内多数天然气净化装置在设计时,会选用碳钢材质的胺液换热器,但在实际运行中经常会遇到腐蚀损伤问题。因此,越来越多的企业开始应用不锈钢材质管束的换热器。通过试验研究了304L不锈钢在高含硫含氯胺液的碱性环境中的点蚀和应力腐蚀开裂敏感性,验证了该材质在某气田贫胺液换热器运行工况条件下的适用性及安全性,为合理控制高含硫酸性气田换热设备材料的使用成本提供了有效依据。

关键词: 304L不锈钢, 甲基二乙醇胺, 贫胺液, 换热器, 点蚀, 应力腐蚀

Abstract: Carbon steel amine heat exchangers are often used in the design of most domestic natural gas purification plants, yet corrosion damage is often encountered in actual operation. Therefore, more and more enterprises begin to adopt stainless steel tube bundle heat exchangers. The pitting corrosion and stress corrosion cracking (SCC) susceptibility of 304L stainless steel in alkaline environment with high sulfur and chloramine content were studied through experiments. The applicability and safety of the material are verified under the operating conditions of the heat exchanger with lean amine solution. This provides an effective basis for the rational control of the use-cost of heat exchange equipment materials in high sulfursour gasfields.

Key words: 304L stainless steel, MDEA, lean amine solution, heat exchanger, pitting, stress corrosion