Materials for outlet ducts in wet FGD systems
Journal Article
·
· Mater. Performance; (United States)
OSTI ID:6032702
The performance of outlet duct materials in wet FGD systems was investigated. Information on operating experience was collected during visits to FGD installations. Candidate materials were subjected to 18-month exposures in the outlet ducts of two FGD systems. Failure analyses were performed on actual outlet duct linings from two other FGD systems. Information is presented on materials performance, failure mechanisms, and materials cost. The performance of an outlet duct material was found to depend upon the environmental conditions within the duct. The most severe condition occurs when wet scrubbed gas is mixed with hot bypassed gas. Few materials have been able to withstand the mixing zone environment. The failure mechanisms include permeation and/or heat damage for organic linings, acid attack for inorganic linings, and several types of corrosion for alloys. The use of alloy claddings or linings on carbon steel offers a potential cost savings over solid alloy plate. The cost of nonmetallic linings over a 30-y plant life can be as much as three times the initial installed cost. Characterization of the outlet duct environment is important in all cases to identify materials problems and develop solutions for them.
- Research Organization:
- Battelle Columbus Laboratories, Columbus, OH
- OSTI ID:
- 6032702
- Journal Information:
- Mater. Performance; (United States), Journal Name: Mater. Performance; (United States) Vol. 25:2; ISSN MTPFB
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
42 ENGINEERING
424000* -- Engineering-- Pollution Control Equipment-- (1980-1989)
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ALLOYS
CARBON STEELS
CHEMICAL REACTIONS
COST
DESULFURIZATION
DUCTS
EQUIPMENT
FAILURES
FLUE GAS
GASEOUS WASTES
IRON ALLOYS
IRON BASE ALLOYS
LIME-LIMESTONE WET SCRUBBING PROCESSES
LINERS
MATERIALS TESTING
MIXING
PERFORMANCE
PERMEABILITY
POLLUTION CONTROL EQUIPMENT
SCRUBBERS
SCRUBBING
STEELS
TEMPERATURE EFFECTS
TESTING
WASTES
424000* -- Engineering-- Pollution Control Equipment-- (1980-1989)
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ALLOYS
CARBON STEELS
CHEMICAL REACTIONS
COST
DESULFURIZATION
DUCTS
EQUIPMENT
FAILURES
FLUE GAS
GASEOUS WASTES
IRON ALLOYS
IRON BASE ALLOYS
LIME-LIMESTONE WET SCRUBBING PROCESSES
LINERS
MATERIALS TESTING
MIXING
PERFORMANCE
PERMEABILITY
POLLUTION CONTROL EQUIPMENT
SCRUBBERS
SCRUBBING
STEELS
TEMPERATURE EFFECTS
TESTING
WASTES