Analysis and Life Evaluation of CS2 Reaction Tube

5th Annual International Conference on Material Science and Engineering

Li, Zhenxin^1 ; Ding, Xiaofei^1 ; Xie, Zhongdong^1 ; Yang, Xiaotong^1 ; Guan, Yiming^1

College of Mechanical and Power Engineer, Dalian Ocean University, Dalian

116023, China^1

关键词: Chemical composition analysis;    Life evaluation;    Local corrosion;    Macro- and microstructure;    Nickel-Chromium alloys;    Sulfur corrosions;    Uniform corrosion;    Welding properties;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/275/1/012027/pdf
DOI  :  10.1088/1757-899X/275/1/012027

来源: IOP

【 摘 要 】

The chemical composition analysis, macro and microstructure analysis, mechanical properties and other methods were used to analyze the state and life of CS2 reaction tube for a period of time. The results showed that there is no sulfur corrosion ditch in the furnace tube, and the other one has a uniform corrosion state except for the severe local corrosion. The mechanical properties are good at room temperature. The number and appearance of phase are the main reason for making material brittle, welding property degradation and causing crack. The approximate residual life of the furnace tube is also evaluated by various means analysis and life calculation. It is recommended that the tube be replaced with a higher grade nickel-chromium alloy instead of HK40.