Coal/char reactivity
The overall objective of the coal/char reactivity project is to expand the fundamental combustion data base to support existing and advanced atmospheric combustion systems. Investigations will focus primarily on elucidating the burning rates of chars under realistic flame conditions as a function of fuel and system parameters. Key issues include the relative contributions of inorganic constituents, and the surface and structural effects on the burning behavior of the low-rank coal-derived chars. A second objective is to perform fundamental investigations on the ignition mechanisms of single particles of low-rank coals by measuring rates of carbon monoxide and carbon dioxide production. This quarter's work included: design and testing of the videomicroscope sizing system; chars were prepared for combustion testing in the single-particle reactor using a flame burner. The following coals have been prepared: Beulah-Zap (PSOC- 1507), Lower Wilcox (PSOC-1443-D), New Mexico Blue (PSOC-1445-D), and Pittsburgh {number sign}8 (PSOC-1451-D); the morphologies of chars produced in the flame burner were examined; surface science studies using Auger and ESCA were performed on the suite of Beulah-Zap chars; the effect of various levels of sodium, potassium, and calcium on the burning rates of chars was examined; the ignition apparatus was completed and tested using Pittsburgh {number sign}8 (PSOC-1451) coal; the effect of moisture on the ignition and combustion of the vitrain lithotype of Beulah lignite (PSOC-1507) was determined; the combustion behaviors of vitrain, attritus, and fusain lithotypes of Beulah lignite were examined at 650{degree}C; the effect of temperature on the ignition and combustion of the vitrain lithotype of Beulah lignite and Pittsburgh {number sign}8 coal was examined; and the effect of coal rank on combustion behavior was determined at both 650{degree} and 1000{degree}C. 37 tabs., 29 figs., 21 tabs.
- Research Organization:
- North Dakota Univ., Grand Forks, ND (USA). Energy and Mineral Research Center
- Sponsoring Organization:
- DOE/FE
- DOE Contract Number:
- FC21-86MC10637
- OSTI ID:
- 7129428
- Report Number(s):
- DOE/MC/10637-2827-Task-3.3; ON: DE90011400
- Country of Publication:
- United States
- Language:
- English
Similar Records
Distribution of inorganics in low-rank coals
Characterization of the components of lithologic layers of North Dakota lignites
Related Subjects
014000* -- Coal
Lignite
& Peat-- Combustion
ALKALI METALS
ALKALINE EARTH METALS
CALCIUM
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON MONOXIDE
CARBON OXIDES
CARBONACEOUS MATERIALS
CATIONS
CHALCOGENIDES
CHARGED PARTICLES
CHARS
CHEMICAL REACTION KINETICS
COAL
COAL RANK
COMBUSTION KINETICS
COMBUSTION PRODUCTS
DOCUMENT TYPES
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FUELS
IMAGES
IONS
KINETICS
MATERIALS
METALS
MORPHOLOGY
OXIDES
OXYGEN COMPOUNDS
POTASSIUM
PRODUCTION
PROGRESS REPORT
PYROLYSIS PRODUCTS
REACTION KINETICS
REACTIVITY
SODIUM
SURFACES
TEMPERATURE EFFECTS