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Electrochemical Corrosion Control of AL-6XN Super Austenitic Stainless Steel Flue Gas Desulfurization Scrubbers

Published: 20111213
Author(s): Winston Shim
Co-Author(s): Tom Henderson and Michael Hoydick

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 Spring of 2009. After 18 months of operation, internal scrubber inspection measurements showed corrosion was essentially halted.

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