某硫冷凝器管束的腐蚀原因  

Corrosion Reason of a Sulfur Condenser Tube

作　　者：王奕璇 程学军 石李明 张宏飞 佘锋 包振宇 孙亮 WANG Yixuan;CHENG Xuejun;SHI Liming;ZHANG Hongfei;SHE Feng;BAO Zhenyu;SUN Liang(Luoyang R&D Center of Technology,Sinopec Engineering(Group)Co.,Ltd.,Luoyang 471032,China;Sinopec An’Qing Chemical Industry Co.,Ltd.,An’qing 246000,China;Sinopec Engineering Construction Co.,Ltd.,Beijing 100101,China;CNOOC Huizhou Refining&Chemical Company,Huizhou 516086,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,洛阳471032 [2]中国石油化工股份有限公司安庆分公司,安庆246000 [3]中国石化工程建设有限公司,北京100101 [4]中海油惠州石化有限公司,惠州516086

出　　处：《腐蚀与防护》2024年第4期106-110,共5页Corrosion & Protection

摘　　要：以某炼化公司4万t/a硫磺装置酸性气燃烧炉出口过程气一级冷凝冷却器的腐蚀为例,通过前期试漏试验、腐蚀减薄穿孔区域形貌观察、腐蚀产物化学成分分析、介质流态流速数值模拟等一系列方法评估了腐蚀原因。结果表明:该硫冷凝器管束发生腐蚀穿孔的主要原因是壳程介质没有提前除氧且pH控制不当导致的氧腐蚀和碱腐蚀,依据分析结果提出了相应的防腐蚀措施。Taking the corrosion of the first stage condensate cooler at the outlet of the acid gas combustion furnace in a 40000 t/a sulfur refining company as an example,the corrosion cause was evaluated through a series of methods such as preliminary leak test,observation of the morphology of the corrosion thinning perforation area,analysis of the chemical composition of corrosion products,and numerical simulation of the flow rate of the medium.The results indicate that the main reason for the corrosion perforation of the sulfur condenser tube bundle was the oxygen corrosion and alkali corrosion caused by the shell side medium not being deoxidized in advance and improper pH control.Based on the analysis results,corresponding anti-corrosion measures were proposed.

关 键 词：失效分析 硫冷凝器 氧腐蚀 流体力学模拟 碱腐蚀 

分 类 号：TG174[金属学及工艺—金属表面处理]