可再生湿法烟气脱硫装置的腐蚀与防护  

Corrosion and Protection of Regenerable Wet Flue Gas Desulfurization Unit

作　　者：唐应彪 TANG Ying-biao(SEG Luoyang R&D Center of Technology,Luoyang 471003,China)

机构地区：[1]中石化炼化工程(集团)股份有限公司洛阳技术研发中心,河南洛阳471003

出　　处：《全面腐蚀控制》2022年第5期9-15,共7页Total Corrosion Control

基　　金：中国石油化工股份有限公司科技开发项目“烟气净化过程中的腐蚀机理及合理选材技术研究”。

摘　　要：某公司的催化裂化烟气脱硫装置采用可再生湿法烟气脱硫工艺,装置运行过程中暴露出很多的腐蚀问题。对现场装置进行腐蚀调研,通过腐蚀类型判断及其规律研究,并对吸收剂、腐蚀产物和腐蚀介质进行分析,针对装置不同部位的腐蚀环境,从工艺控制和材质升级方面提出防护对策,抑制了设备腐蚀,保证了装置的长周期安全稳定运行。FCC flue gas desulfurization unit of a company adopted regenerable wet flue gas desulfurization process,which exposed many corrosion problems during the operation of the unit.Corrosion investigation was carried out on the field device,and its corrosion type and law werestudied.After the analysis of absorbent,corrosion products and corrosion medium,the protection countermeasures were put forward from the aspects of process control and material upgrading according to the corrosion environment of different parts of the device,so the equipment corrosion was inhibited and the long-term safe and stable operation of the device was also ensured.

关 键 词：催化裂化 湿法脱硫 烟气脱硫 吸收剂 腐蚀 

分 类 号：TG174[金属学及工艺—金属表面处理]