Flue Gas Desulfurization (FGD) scrubbers made of Al-6XN® super-austenitic stainless steel experienced premature through wall corrosion failure after 18 months of operation. Multiple remedial methods were evaluated A PAPTM electrochemical corrosion prevention system supplied by Corrosion Service Company Limited was chosen and installed in the […]
The corrosion mitigation benefit of Anotection@ anodic protection (AP) systems in sulphuric acid tanks is well established. AP prevents tank wall wastage, iron contamination of acid and hydrogen grooving of tank walls. Yet, the efficacy of AP at the wet/dry (tidal) zone of tank walls […]
Anodic protection (AP) is powerful technique for corrosion mitigation of white and green liquor tankage. Recent improvements are discussed. The use of Distributed Current Sources (DCS) resulted in decrease of: 1) mill personnel involvement 2) logistical hurdles for repassivation 3) DC cabling costs Current distribution […]
