Burning of suspended coal-water slurry droplet with oil as combustion additive. Final report
The combustion of single coal-water slurry droplet with oil as combustion additive (CWOM) has been studied. In this study, the droplet is suspended on a fine quartz fiber and is exposed to the hot combustion product of propane (C/sub 3/H/sub 8/) and air. The results are documented in a movie series. The combustion of CWOM with various combinations of concentrations are compared with that of coal-water slurry and water-oil mixture droplets. The combustion of coal-water slurry is enhanced significantly due to the presence of emulsified kerosene. The enhancement is also dependent upon the mixing procedure during preparation of CWOM. The presence of emulsified kerosene induces local boil-off and combustion that coal particles are splashed as fire works during the early evaporation stage of droplet heat-up. After particle splashing, blow-holes appear on the droplet surface. The popcorn and swelling phenomena usually occurred in coal-water-slurry combustion is greatly reduced. Significant combustion enhancement occurs with the use of kerosene in an amount of about 15 percent of the overall CWOM. This process of using kerosene as combustion additive may provide obvious advantage for the combustion of bituminous coal-water slurry. 4 references, 6 figures.
- Research Organization:
- Carnegie-Mellon Univ., Pittsburgh, PA (USA). Dept. of Mechanical Engineering
- DOE Contract Number:
- FG22-82PC50815
- OSTI ID:
- 6393229
- Report Number(s):
- DOE/PC/50815-T1; ON: DE85001431
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
FUEL SLURRIES
COMBUSTION
FUEL ADDITIVES
AIR
BITUMINOUS COAL
COAL
DROPLETS
KEROSENE
MIXTURES
PROPANE
WATER
ADDITIVES
ALKANES
BLACK COAL
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
DISPERSIONS
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUELS
GASES
HYDROCARBONS
HYDROGEN COMPOUNDS
LIQUID FUELS
MATERIALS
ORGANIC COMPOUNDS
OXIDATION
OXYGEN COMPOUNDS
PARTICLES
PETROLEUM PRODUCTS
SLURRIES
SUSPENSIONS
THERMOCHEMICAL PROCESSES
014000* - Coal
Lignite
& Peat- Combustion