针对某炼油糠醛精制装置的抽出油加热炉出现转油线同心异径管及辐射段前流段的弯头局部腐蚀减薄的情况,从管件材料性能、蚀坑形貌、流体特性等多方面进行原因分析,确认主要是气泡冲蚀腐蚀的结果.就此提出相应的防治措施,包括更新性对策和维修性对策.

The concentric reducer in transfer oil line and some of the bends in the front of radiation section of cylindrical furnace in furfural equipment in a refinery suffered localized corrosion.After analyses of mechanical performance of the materials,morphology of corrosion cavities and flow characteristics,the corrosion reasons were found.The main effect came from cavitation.Some preventive measures including renewing measures and maintenance measures have been provided.