Comparing materials used in mist eliminators
- Solvay Advanced Polyers (United States)
Wet flue gas desulfurization (FGD) systems, or wet scrubbers, are notoriously capital - and maintenance-intensive. Mist eliminators are an integral part of most wet FGD systems. These are available in a variety of materials - polypropylene, fiberglass reinforced polymer (FRP), polysulfone and stainless steel. The article discusses the material properties, performance attributes and relative cost differences associated with each of these four materials. It describes the common problems with mist eliminators - fouling and corrosion. These can be minimised by routine cleaning and use of chemical additives to prevent deposition. An analysis was carried out to compare the four materials at APS Cholla power plant. As a result the facility is retrofitting its remaining wet scrubber towers in Unit 2 with mist eliminators constructed from polysulfone as each of the current ones of the existing polypropylene needs replacing. Polysulfone is cheaper to clean and components require replacing less frequently than polypropylene. Switching from stainless steel to polypropylene has proved advantageous on 22 wet scrubbers operated by PPL Montana. 5 figs. 2 tabs.
- OSTI ID:
- 21004925
- Journal Information:
- Power Engineering (Barrington), Vol. 111, Issue 11; ISSN 0032-5961
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
20 FOSSIL-FUELED POWER PLANTS
SULFUR DIOXIDE
AIR POLLUTION CONTROL
POLLUTION CONTROL EQUIPMENT
COMPLIANCE
LIME-LIMESTONE WET SCRUBBING PROCESSES
SCRUBBERS
FLUE GAS
DESULFURIZATION
MATERIALS TESTING
STAINLESS STEELS
CLEANING
SULFONES
POLYMERS
REINFORCED PLASTICS
DEPOSITION
WEAR RESISTANCE
OXIDATION
CORROSION RESISTANCE
COMPARATIVE EVALUATIONS
COST
FOSSIL-FUEL POWER PLANTS
COAL
POLYPROPYLENE
ECONOMIC ANALYSIS
MAINTENANCE