摘要
通过对某炼油厂焦化炉失效炉管的材料成分、力学性能、显微组织等的分析 ,确定了其失效模式为高温硫腐蚀以及氧化腐蚀。加热炉炉管内外壁结焦层硫含量超标 ,在烧焦时 ,局部炉管过烧 ,发生膨胀变形 ,使强度下降 ,最终导致炉管失效。提出了预防失效的措施。
Chemical composition, mechanical properties and microstructure of the furnace tube in coker unit was analysis and it was concluded that tube burst was a result of oxidative corrosion and high temperature sulphur corrosion. High sulphur content in inter and outer surface coking deposition layer of furnace tube caused localized tube overheating. Tube thickness thinning as a result of corrosion caused tube bursting finally.
出处
《理化检验（物理分册）》
CAS
2001年第2期76-79,共4页
Physical Testing and Chemical Analysis(Part A:Physical Testing)
