Analyses on Corrosion in Radiation Section of Cylindrical Furnace of Furfural Equipment

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.