Effect of iron salts on the carbonization of coal-bitumen slurries
The objective of this study was to investigate the inhibition of coke fusion by the presence of iron salts in coal-bitumen slurries. A Plastofrost apparatus was used for the above purpose, along with a specially developed procedure to handle the slurry. Three Canadian and one US coals were used along with a heavy bitumen (Cold Lake vacuum bottoms). Plastofrost samples were prepared of the coals with 0, 5 and 20 wt% additive, the vacuum bottoms, and slurries of 30 wt% coal in the vacuum bottoms with additive levels of 0, 5 and 20 wt%. The additive delayed initial fusion of the coal grains and completion of fusion. The anisotropic texture of the semicoke was diminished by the additive. The presence of vacuum bottoms suppressed coal fusion, probably by physically separating the coal grains. Fusion is also slightly suppressed at 20 wt% additive; 5 wt% seemed to have little effect. Dissolution of vitrain in the bitumen was not observed. The coal and vacuum bottom phases carbonize separately yielding distinct, but well bonded semicokes. Anisotropic texture of the vacuum bottoms coke is strongly diminished by the presence of the finely ground coal.
- Research Organization:
- Univ. of Waterloo, Ontario (Canada)
- OSTI ID:
- 5907252
- Report Number(s):
- CONF-8809265-
- Journal Information:
- Am. Chem. Soc., Div. Pet. Chem., Prepr.; (United States), Journal Name: Am. Chem. Soc., Div. Pet. Chem., Prepr.; (United States) Vol. 33:3; ISSN ACPCA
- Country of Publication:
- United States
- Language:
- English
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ADDITIVES
BITUMENS
CARBONACEOUS MATERIALS
CARBONIZATION
CHEMICAL REACTIONS
COAL
DATA
DECOMPOSITION
DISPERSIONS
ENERGY SOURCES
EXPERIMENTAL DATA
FOSSIL FUELS
FUEL SLURRIES
FUELS
INFORMATION
IRON COMPOUNDS
MATERIALS
MIXTURES
NUMERICAL DATA
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PERFORMANCE
SALTS
SLURRIES
SUSPENSIONS
TAR
TRANSITION ELEMENT COMPOUNDS