乙烯裂解炉辐射段炉管损伤原因分析

Damage Cause Analysis of Furnace Tube in Radiant Section of Ethylene Pyrolyzer

裂解炉辐射段炉管是乙烯装置该装置的重要部件,主要对某80万t/a乙烯装置受损的辐射段炉管,通过宏观形貌、材质分析、硬度检测、电镜及能谱分析等方面进行排查分析,得出由于炉管高温长期服役,性能退化,在冲刷腐蚀下出现减薄及裂纹,并针对该情况提出相应的建议。

Furnace tube in radiation cracking furnace is an important component of the ethylene plant. In this paper, the damage of cracking furnace tube in 800 kt/a ethylene unit was investigated by macro morphology, material analysis, hardness analysis, electron microscopy and energy spectrum analysis. The results showed that that due to the long service of furnace tube in high temperature, performance degradation and thinning and cracks appeared under erosion corrosion. At last, corresponding suggestions were put forward.