Materials technology for coal-conversion processes. Fourteenth quarterly report, April-June 1978
Optical and SEM examinations of alumina, alumina--chrome, magnesia--chrome, and chrome--spinel refractories exposed to acid slags in some previous test runs show that spinel reaction products form at the slag-refractory interface. Ultrasonically measured erosive-wear data on the HYGAS cyclone have been obtained after more than 3000 h of operation; the linear rate is nearly the same as that observed in past examinations. A field test program for acoustic valve-leakage-detection systems for use at the Morgantown Energy Technology Center was planned. Uniaxial tensile data were generated for Incoloy 800, Type 310 stainless steel, U.S. Steel Alloy 18-18-2, and Inconel 671 after 3.6 months exposures to multicomponent gas mixtures that simulate a coal-gasification environment. The preexposure of the materials to complex gas mixtures resulted in a decrease in ultimate tensile strength with only minimal changes in the uniform strain over the range of approx. 4 to 13%. Installation work continued on the high-temperature erosion apparatus. Failed components from the HYGAS Ash Agglomerating Gasifer (dipleg, thermowell and pressure tap) and the Synthane pilot plant (CO/sub 2/-compressor unloading fingers, eighth-floor oxygen line, steam heat up line, raw-gas scrubber, char-transfer line, oxygen line No. 1203 and oxygen line No. 1381) were examined.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- DOE Contract Number:
- W-31-109-ENG-38
- OSTI ID:
- 6344582
- Report Number(s):
- ANL-78-79
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
01 COAL, LIGNITE, AND PEAT
COAL GASIFICATION PLANTS
MATERIALS
INCOLOY 800
CORROSION
TENSILE PROPERTIES
INCONEL 671
REFRACTORIES
EVALUATION
STAINLESS STEEL-310
STAINLESS STEELS
VALVES
ACOUSTIC EMISSION TESTING
CHEMICAL REACTIONS
CORROSIVE EFFECTS
EROSION
FAILURE MODE ANALYSIS
NONDESTRUCTIVE TESTING
SLAGS
WEAR
ACOUSTIC TESTING
ALLOYS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
CONTROL EQUIPMENT
CORROSION RESISTANT ALLOYS
EQUIPMENT
FLOW REGULATORS
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
INCOLOY ALLOYS
INDUSTRIAL PLANTS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS TESTING
MECHANICAL PROPERTIES
NICKEL ALLOYS
NICKEL BASE ALLOYS
STEELS
SYSTEM FAILURE ANALYSIS
SYSTEMS ANALYSIS
TESTING
360104* - Metals & Alloys- Physical Properties
010404 - Coal
Lignite
& Peat- Gasification
010405 - Coal
Lignite
& Peat- Hydrogenation & Liquefaction
360105 - Metals & Alloys- Corrosion & Erosion
360204 - Ceramics
Cermets
& Refractories- Physical Properties
360205 - Ceramics
Cermets
& Refractories- Corrosion & Erosion