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

Journal Article · Wed Oct 01 04:00:00 EDT 1986 · Combust. Flame; (United States)

DOI:https://doi.org/10.1016/0010-2180(86)90036-2· OSTI ID:5059234

Yao, S C; Manwani, P

Coal-water slurries have been regarded as a potential substitute for heavy fuel oil. Various demonstrations of coal-water slurry combustion have been performed; however, a fundamental understanding of how the combustion process of a slurry fuel is enhanced is still not adequate. The combustion of coal-water mixture droplets suspended on microthermocouples has been investigated. It was found that droplets of lignite coal (which is a noncaking coal) burn effectively; however, droplets of bituminous coal (which is a caking coal) are relatively difficult to burn. During the heat-up of bituminous coal-water slurry droplets may turn to ''popcorn'' and show significant agglomeration. The incomplete combustion of coal-water slurry droplets in furnaces has been reported, and this is a drawback of this process. The objective of the present study is to explore the possibility of enhancing the combustion of coal-water slurry droplets with the use of a combustible emulsified oil.

• Research Organization: Dept. of Mechanical Engineering, Carnegie-Mellon Univ., Pittsburgh, PA 15213
• OSTI ID: 5059234
• Journal Information: Combust. Flame; (United States), Journal Name: Combust. Flame; (United States) Vol. 66:1; ISSN CBFMA
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
014000* -- Coal
Lignite
& Peat-- Combustion
02 PETROLEUM
025000 -- Petroleum-- Combustion
ADDITIVES
AGGLOMERATION
BITUMINOUS COAL
BLACK COAL
BROWN COAL
CARBONACEOUS MATERIALS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COAL
COLLOIDS
COMBUSTION
COMBUSTION KINETICS
DISPERSIONS
DROPLETS
EMULSIONS
ENERGY SOURCES
FOSSIL FUELS
FUEL OILS
FUEL SLURRIES
FUEL SUBSTITUTION
FUELS
FURNACES
HYDROGEN COMPOUNDS
KINETICS
LIGNITE
LIQUID FUELS
MATERIALS
MEASURING INSTRUMENTS
MIXTURES
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXIDATION
OXYGEN COMPOUNDS
PARTICLES
PETROLEUM PRODUCTS
REACTION KINETICS
SLURRIES
SUSPENSIONS
THERMOCHEMICAL PROCESSES
THERMOCOUPLES
VISCOSITY
WATER