Engineer, design, construct, test, and evaluate a pressurized fluidized bed pilot plant using high sulfur coal for production of electric power. Phase I: preliminary engineering. Technology support test results PFB heat exchanger fin and tube materials erosion rig evaluation test period July 1976--April 1977

Technical Report · Mon May 01 00:00:00 EDT 1978

DOI:https://doi.org/10.2172/6771184· OSTI ID:6771184

A test environment was created simulating the temperature and particle velocity conditions to which tube and fin alloys will be exposed in the Curtiss-Wright PFB Combustor. Sample pieces of seven candidate alloys were exposed to the environment for 1000 hours, with weight and surface roughness measurements taken every 250 hours. None of the alloys experienced changes attributable to erosion. 1000-hour duration tests were run with brazed and welded joints and with samples having a number of erosion or corrosion resistant coatings. Once again, no results attributable to erosion were noted. The changes in weight and surface roughness as well as dimensional changes appear to be due entirely to the formation of oxides at the 1600/sup 0/F test temperature. Weight losses can be related to spalling of such oxides from the surface upon removal from the test bed for measurement. No significant difference in behavior of the seven candidate alloys was noted during the exposure. The braze joints, welded joints and coated specimens similarly show no effects of erosion. Unless velocities are increased substantially, in which case further work regarding erosion will be necessary, the mechanism of erosion may be disregarded insofar as its impact on tube material life is concerned. Further efforts should be concerned with corrosion phenomena as the failure mode.

• Research Organization: Curtiss-Wright Corp., Wood-Ridge, N.J. (USA). Power Systems Div.
• DOE Contract Number: EX-76-C-01-1726
• OSTI ID: 6771184
• Report Number(s): HCP/T1726-32/D
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
01 COAL, LIGNITE, AND PEAT
CHROMIUM ALLOYS
MATERIALS TESTING
COMBINED-CYCLE POWER PLANTS
FLUIDIZED-BED COMBUSTORS
CORROSION
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SIMULATION
NICKEL ALLOYS
HAYNES ALLOYS
INCOLOY 800
INCONEL 617
TEST FACILITIES
WELDED JOINTS
ALLOYS
ALUMINIUM ALLOYS
BURNERS
CHEMICAL REACTIONS
COBALT ALLOYS
COMBUSTORS
HEAT RESISTING ALLOYS
INCOLOY ALLOYS
INCONEL ALLOYS
IRON ALLOYS
IRON BASE ALLOYS
JOINTS
MOLYBDENUM ALLOYS
NICKEL BASE ALLOYS
POWER PLANTS
TESTING
THERMAL POWER PLANTS
TUNGSTEN ALLOYS
200102* - Fossil-Fueled Power Plants- Power Cycles
014000 - Coal
Lignite
& Peat- Combustion