Burning of suspended coal-water slurry droplet with oil as combustion additive. Final report

Technical Report · Mon Oct 01 04:00:00 EDT 1984

OSTI ID:6393229

Yao, S C

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

Related Subjects

01 COAL, LIGNITE, AND PEAT
014000* -- Coal
Lignite
& Peat-- Combustion
ADDITIVES
AIR
ALKANES
BITUMINOUS COAL
BLACK COAL
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COAL
COMBUSTION
DISPERSIONS
DROPLETS
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUEL ADDITIVES
FUEL SLURRIES
FUELS
GASES
HYDROCARBONS
HYDROGEN COMPOUNDS
KEROSENE
LIQUID FUELS
MATERIALS
MIXTURES
ORGANIC COMPOUNDS
OXIDATION
OXYGEN COMPOUNDS
PARTICLES
PETROLEUM PRODUCTS
PROPANE
SLURRIES
SUSPENSIONS
THERMOCHEMICAL PROCESSES
WATER