Root Cause Analysis and Successful Modifications to Eliminate Hot Spots in SRU at MOL’s Danube Refinery

Conference:

Bundle wall between SRU Thermal reactor and HP boiler developed significant erosion problems within few years of operation, resulting in water leaking into the thermal reactor section. Detailed root cause analysis identified breaking of heat-protection ceramics, corrosion/erosion of boiler line endings and damaged wall insulation. The extent of damages required the replacement of bundle section. Comparing specifications to other SRU furnaces, modifications applied on bundle walls and protection coatings (refractory) to avoid further damages. The modifications extend to the ceramic protective sleeve (ferrule), bundle wall, refractory and thermal load protection and distribution.