Materials technology for coal-conversion processes. Progress report, January-March 1980
The program entails nondestructive testing, failure analysis, and studies of erosive wear, corrosion, and refractory degradation. Analysis of recent refractory-slag interaction tests suggests that as the chromia content is increased from 10 to 32%, the primary reaction product changes from calcium hexaluminate to spinel, significantly increasing the corrosion resistance of the refractory. Field reliability of the high-temperature ultrasonic erosion scanner was demonstrated at both a coal liquefaction plant (SRC at Tacoma, WA) and a coal gasification plant (Morgantown, WV). Continuous high-temperature operation has been demonstrated and an accuracy of +-0.025 mm seems achievable. Equipment has been ordered for field tests of passive acoustic systems at Exxon. This includes a four-channel tape recorder, differential amplifiers, and signal conditioners. Corrosion studies have been completed on effects of multicomponent gas environments on corrosion mechanisms and uniaxial tensile properties of Fe-Ni-Cr alloys. Results of these and other tests utilizing 10,000-h exposures suggest that corrosion rates of 0.6 mm/y can be expected. Failure analysis activities included studies of compressor diaphragms from the Grand Forks Energy Technology Center coal-liquefaction continuous-process unit. Cracks were found in two of the three diaphragms. Failure of an internal solids transfer line from HYGAS appears to have been caused by severe localized sulfidation of the high-nickel Inconel 182 weld metal used to fabricate the line.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- W-31-109-ENG-38
- OSTI ID:
- 5171478
- Report Number(s):
- ANL-80-46
- Country of Publication:
- United States
- Language:
- English
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Materials technology for coal-conversion processes. Progress report, July-September 1981
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Related Subjects
36 MATERIALS SCIENCE
COAL GASIFICATION PLANTS
MATERIALS TESTING
COAL LIQUEFACTION PLANTS
IRON BASE ALLOYS
CORROSION
NICKEL BASE ALLOYS
REFRACTORIES
COAL GASIFICATION
COAL LIQUEFACTION
ELECTRON MICROSCOPY
EROSION
EXPERIMENTAL DATA
FAILURE MODE ANALYSIS
GRAPHS
INCOLOY 800
METALLOGRAPHY
MONITORING
NONDESTRUCTIVE TESTING
STAINLESS STEEL-310
TABLES
ALLOYS
CHEMICAL REACTIONS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
CORROSION RESISTANT ALLOYS
DATA
DATA FORMS
GASIFICATION
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
INCOLOY ALLOYS
INDUSTRIAL PLANTS
INFORMATION
IRON ALLOYS
LIQUEFACTION
MATERIALS
MICROSCOPY
NICKEL ALLOYS
NUMERICAL DATA
STAINLESS STEELS
STEELS
SYSTEM FAILURE ANALYSIS
SYSTEMS ANALYSIS
TESTING
THERMOCHEMICAL PROCESSES
010400* - Coal
Lignite
& Peat- Processing
360105 - Metals & Alloys- Corrosion & Erosion
360205 - Ceramics
Cermets
& Refractories- Corrosion & Erosion
360203 - Ceramics
Cermets
& Refractories- Mechanical Properties