Gasification ash and slag characterization: (Task 3. 5)
The overall objective of the program is to obtain laboratory- and bench-scale data on the formation, flow, and sticking behavior of coal ash and slag under gasification conditions. The eventual outcome will be a unified picture of the behavior of inorganic species within the gasifier. This will include a set of models with which the behavior of an ash can be successfully predicted. The unified picture will be invaluable to the designers and gasifier operators in assessing a coal for utilization in gasification systems. Accomplishments this quarter include the study of the mineral transformation of seventeen coal ashes and model mineral mixtures and the determination of the viscosity of two model mineral mixtures and Illinois {number sign}6 ash under reducing conditions. The modeling of the behavior of viscosity as a function of temperature involved the compilation of viscosity temperature data of a wide range of molten ashes and glasses. Surface tension was determined on four samples using the sessile drop method. These samples include three coal ashes and a model mineral (sodium montmorillonite). Coals studied during this reporting period were: Velva lignite, Wyodak subbituminous, Indian Head lignite, Martin Lake lignite, Pittsburgh No. 8 bituminous, and Illinois No. 6 bituminous. 13 refs., 18 figs., 8 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:
- 6845419
- Report Number(s):
- DOE/MC/10637-2827-Task-3.5; ON: DE90011398
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ASHES
SURFACE TENSION
VISCOSITY
MINERALS
PHASE TRANSFORMATIONS
SLAGS
ADHESION
CHEMICAL COMPOSITION
COAL GASIFICATION
CORRELATIONS
EQUIPMENT
EVAPORATION
PROGRESS REPORT
TEMPERATURE EFFECTS
DOCUMENT TYPES
GASIFICATION
RESIDUES
SURFACE PROPERTIES
THERMOCHEMICAL PROCESSES
010404* - Coal
Lignite
& Peat- Gasification