SEM and EMA studies of an SRC pilot plant carbonaceous plug [electronic resource].
- Published
- Washington, D.C. : United States. Dept. of Energy, 1978.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy. - Physical Description
- Pages: 7 : digital, PDF file
- Additional Creators
- Oak Ridge National Laboratory, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
Access Online
- Restrictions on Access
- Free-to-read Unrestricted online access
- Summary
- Scanning electron microscopy (SEM) and electron microprobe analyses (EMA) have proven to be extremely useful methods for analyzing microstructures observed in a carbonaceous ''plug'' retrieved from a feedline of a solvent refined coal (SRC) conversion plant. Typical petrographic micrographs revealed a semi-coke matrix enclosing nearly uniform sized minerals or mineral assemblages, as well as unaltered coal (fusinite) fragments. The identity of the minerals, by SEM and EMA, revealed two distinct mineral-types within the plug, namely minerals that have undergone transformations such as pyrite (FeS/sub 2/) ..-->.. pyrrhotite (FeS), and those minerals that are essentially unaltered; for example, quartz and kaolinite. The examination of porous areas within the semi-coke constituent showed a variety of solidified ''mesophase'' spherules either as individuals or as coalesced groups. These observations are significant in that they reveal the mechanism by which semi-coke forms; i.e., via spherical liquid crystals separating from the coal and solvent oil slurry. Additional structural features associated with the semi-coke were observed such as ridges along the pore walls composed of coalesced spheres in a chain-like growth.
- Report Numbers
- E 1.99:conf-780415-3
conf-780415-3 - Subject(s)
- Other Subject(s)
- Carbonaceous Materials
- Electron Microprobe Analysis
- Electron Microscopy
- Src Process
- Plugging
- Coal Liquefaction Plants
- Deposits
- Kaolinite
- Minerals
- Petrology
- Pilot Plants
- Pyrite
- Quartz
- Semicoke
- Aluminium Compounds
- Aluminium Silicates
- Chalcogenides
- Chemical Analysis
- Functional Models
- Geology
- Industrial Plants
- Iron Compounds
- Iron Sulfides
- Microanalysis
- Microscopy
- Ores
- Oxides
- Oxygen Compounds
- Pyrites
- Silicates
- Silicon Compounds
- Silicon Oxides
- Sulfides
- Sulfur Compounds
- Sulfur Ores
- Transition Element Compounds
- Note
- Published through SciTech Connect.
01/01/1978.
"conf-780415-3"
Scanning electron microscopy conference, Los Angeles, CA, USA, 16 Apr 1978.
Harris, L. A.; Yust, C. S. - Funding Information
- W-7405-ENG-26
View MARC record | catkey: 13845301