Refractories for dry ash coal gasifiers
This report summarizes the findings of a 9-yr research program, sponsored by the US Department of Energy and conducted by the Bureau of Mines, to evaluate refractory liner materials for coal gasifier reactors. Commercially available refractories were exposed to coal gasifier reactor environments, reproduced in the laboratory with a high-temperature, high-pressure test facility, followed by extensive postexposure evaluation. Thirty-six castable or gunnable refractories and cements and 24 refractory brick were evaluated. The behavior of castable refractories reinforced with stainless steel fibers was also examined. Gas environments that were evaluated included steam, H/sub 2/, CO/sub 2/, CO, and typical high- and low-Btu gas mixtures. Exposure pressures ranged from 100 to 1,000 psig, temperatures from 500/sup 0/ to 1100/sup 0/C, for periods from 50 h to 2000 h. In some exposures, sodium and/or potassium hydroxide were introduced in order to simulate a high-alkali environment. It was found that intermediate- and low-alumina refractories produced from domestically available raw materials, rather than high-alumina refractories produced from imported raw materials, gave the best service as liner materials and that alkali attack was probably not a serious problem with most refractories. Based on the results of this program, good choices of refractory liner materials for gasifier reactors can be made. 7 references, 25 figures, 30 tables.
- Research Organization:
- Bureau of Mines, Tuscaloosa, AL (USA). Tuscaloosa Research Center
- OSTI ID:
- 6126470
- Report Number(s):
- BM-RI-8913; ON: DE85008328
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
CHEMICAL REACTORS
LINERS
COAL GASIFICATION PLANTS
MATERIALS TESTING
REFRACTORIES
BULK DENSITY
CHEMICAL COMPOSITION
CLASSIFICATION
COMPRESSION STRENGTH
MINERALOGY
PERFORMANCE TESTING
ABRASION
CARBON DIOXIDE
CARBON MONOXIDE
COMPARATIVE EVALUATIONS
CORROSIVE EFFECTS
EXPERIMENTAL DATA
HIGH BTU GAS
HIGH TEMPERATURE
HYDROGEN
INTERMEDIATE BTU GAS
MEDIUM PRESSURE
POTASSIUM HYDROXIDES
SODIUM HYDROXIDES
STAINLESS STEELS
STEAM
TEST FACILITIES
VERY HIGH TEMPERATURE
ALKALI METAL COMPOUNDS
ALLOYS
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
CHROMIUM ALLOYS
CORROSION RESISTANT ALLOYS
DATA
DENSITY
ELEMENTS
FLUIDS
FUEL GAS
FUELS
GAS FUELS
GASES
HYDROGEN COMPOUNDS
HYDROXIDES
INDUSTRIAL PLANTS
INFORMATION
IRON ALLOYS
IRON BASE ALLOYS
MECHANICAL PROPERTIES
NONMETALS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
POTASSIUM COMPOUNDS
SODIUM COMPOUNDS
STEELS
TESTING
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360203 - Ceramics
Cermets
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360205 - Ceramics
Cermets
& Refractories- Corrosion & Erosion