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Corrosion in flue gas desulfurization plants and other low temperature equipment
Author(s) -
Dahl L.
Publication year - 1992
Publication title -
materials and corrosion
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.487
H-Index - 55
eISSN - 1521-4176
pISSN - 0947-5117
DOI - 10.1002/maco.19920430610
Subject(s) - corrosion , flue gas desulfurization , flue gas , material selection , waste management , metallurgy , corrosion prevention , materials science , process engineering , engineering , environmental science , composite material
A literature study of corrosion problems in flue gas desulfurization (FGD) plants and other low‐temperature equipment has been made. The study in question has been limited to coal‐ and waste‐fired plants. The results of the study shall contribute to selection of better materials and an optimization of the flue gas processing in such a way that the corrosion risk will be diminished leading to less costs of operation and maintenance. Before the selection of materials for FGD plants experiences from similar plants, pilot plant data, laboratory results and general recommendations for material selection must be carefully studied. Material recommendations from manufacturers are of great value, especially when selecting organic or inorganic coatings alternatively linings. The choice of an alloy is strongly dependent on the process chemistry, above all the pH and the chloride concentration. In several cases high‐alloyed steels, nickel base or titanium alloys are recommended, e.g. nickel base alloys or titanium can be installed either as solid plates, clad plates or attached liners. Properly selected protective linings or coatings of non‐metallics applied in a qualified manner and maintained well will, however, perform cost‐effectively. Different ways to minimize the corrosiveness of the process environment have also been discussed, e.g. the use of inhibitors but considerable interest has also been devoted to corrosion monitoring.