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Corrosion inhibitors for FGD systems

Conference ·
OSTI ID:6984009
; ; ;
Laboratory tests were conducted to evaluate the performance of several inhibitors on the corrosion behavior of 1020 carbon steel, Type 316L stainless steel, alloy G-3 and Grade-2 titanium in a pilot flue gas desulfurization (FGD) limestone scrubber. Replicate coupon and U-bend specimens of the three passive alloys were exposed in the absorber; and replicate specimens of all four alloys were exposed in the outlet duct pre-reheat and post-reheat test zones. In most cases, 1,000 ppm inhibitor was introduced into the slurry at the start of each test; however, in one case, inhibitor was also continuously injected directly into the outlet duct. The effects of inhibitors on corrosion behavior were evaluated in terms of mass loss for carbon steel and depths of bold surface pitting and crevice attack for the passive alloys. Electrochemical measurements were performed on all four alloys in the outlet duct condensate and slurry environments. Inhibitor effects on SO/sub 2/ removal efficiency were also noted.
OSTI ID:
6984009
Report Number(s):
CONF-870314-
Country of Publication:
United States
Language:
English

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Related Subjects

01 COAL, LIGNITE, AND PEAT
010800* -- Coal
Lignite
& Peat-- Waste Management
20 FOSSIL-FUELED POWER PLANTS
200202 -- Fossil-Fueled Power Plants-- Waste Management-- Noxious Gas & Particulate Emissions
36 MATERIALS SCIENCE
360105 -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
CARBON STEELS
CHEMICAL REACTIONS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
CORROSION
CORROSION INHIBITORS
CORROSION PROTECTION
CORROSION RESISTANCE
CORROSION RESISTANT ALLOYS
CREVICE CORROSION
DESULFURIZATION
EFFICIENCY
ELECTROCHEMICAL CORROSION
EQUIPMENT
FLUE GAS
GASEOUS WASTES
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
IRON ALLOYS
IRON BASE ALLOYS
LIME-LIMESTONE WET SCRUBBING PROCESSES
LOSSES
MATERIALS
MOLYBDENUM ALLOYS
NICKEL ALLOYS
PITTING CORROSION
POLLUTION CONTROL EQUIPMENT
SCRUBBERS
SCRUBBING
STAINLESS STEEL-316
STAINLESS STEELS
STEELS
TESTING
TITANIUM ALLOYS
TITANIUM BASE ALLOYS
WASTES