Ash and slag characterization - gasification
The objective of this research project is the development of a unified picture of chemical and mineralogical changes occurring during ashing and slagging of low-rank coals and associated changes in certain slag physical properties during gasification. This project consists of two parts. The first is a study of the effects of ashing conditions on the mineralogical and bulk chemical composition of ashes or slags derived from low-rank coals. The second is a study of two thermophysical properties of coal ash slags under reducing conditions as they relate to composition and temperatures. The slag properties of special interest addressed in this project are viscosity and surface tension. The ashing study involves a suite of approximately fifteen coals ashed at 150/sup 0/C, 750/sup 0/C, and 1000/sup 0/C. The mineralogy and bulk chemical composition of the ash are determined by x-ray diffraction and x-ray fluorescence. 5 refs., 4 tabs.
- Research Organization:
- North Dakota Univ., Grand Forks (USA). Energy Research Center
- DOE Contract Number:
- FC21-83FE60181
- OSTI ID:
- 5723189
- Report Number(s):
- DOE/FE/60181-200; CONF-860649-2; ON: DE86011601
- Resource Relation:
- Conference: 6. annual gasification contractors' meeting, Morgantown, WV, USA, 24 Jun 1986
- Country of Publication:
- United States
- Language:
- English
Similar Records
Mineral transformations during ashing and slagging of selected low-rank coals
Distribution of inorganics in low-rank coals. [Includes possible associations for many elements]
Related Subjects
ASHES
SLAGS
SURFACE TENSION
VISCOSITY
CHEMICAL COMPOSITION
COAL
COAL GASIFICATION
COAL RANK
ELECTRON MICROPROBE ANALYSIS
EXPERIMENTAL DATA
HIGH TEMPERATURE
VERY HIGH TEMPERATURE
X-RAY DIFFRACTION
X-RAY FLUORESCENCE ANALYSIS
CARBONACEOUS MATERIALS
CHEMICAL ANALYSIS
COHERENT SCATTERING
DATA
DIFFRACTION
ENERGY SOURCES
FOSSIL FUELS
FUELS
GASIFICATION
INFORMATION
MATERIALS
MICROANALYSIS
NONDESTRUCTIVE ANALYSIS
NUMERICAL DATA
RESIDUES
SCATTERING
SURFACE PROPERTIES
THERMOCHEMICAL PROCESSES
X-RAY EMISSION ANALYSIS
010600* - Coal
Lignite
& Peat- Properties & Composition
010404 - Coal
Lignite
& Peat- Gasification