FY-1979 progress report. Hydrotransport plugging study.
The objective of the Hydrotransport Plugging Study is to investigate phenomena associated with predicting the onset and occurrence of plugging in pipeline transport of coal. This study addresses large particle transport plugging phenomena that may be encountered in run-of-mine operations. The project is being conducted in four tasks: review and analysis of current capabilities and available data, analytical modeling, experimental investigations, and unplugging and static start-up. This report documents work completed in FY-1979 as well as work currently in progress. A review of currently available prediction methods was completed. Applicability of the methods to large particle hydrotransport and the prediction of plugging was evaluated. It was determined that available models were inadequate, either because they are empirical and tuned to a given solid or because they are simplified analytical models incapable of accounting for a wide range of parameters. Complicated regression curve fit models lacking a physical basis cannot be extrapolated with confidence. Several specific conclusions were reached: Recent developments in mechanistic modeling, describing flow conditions at the limit of stationary deposition, provide the best basis for prediction and extrapolation of large particle flow. Certain modeled phenomena require further analytical and experimental investigation to improve confidence levels. Experimental work needs to be performed to support modeling and to provide an adequate data base for comparison purposes. No available model permits treatment of solids mixtures such as coal and rock.
- Research Organization:
- Battelle Pacific Northwest Labs., Richland, WA (United States)
- DOE Contract Number:
- EY-76-C-06-1830
- OSTI ID:
- 5650814
- Report Number(s):
- PNL-3203
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
COAL
HYDRAULIC TRANSPORT
SLURRY PIPELINES
PLUGGING
COMPARATIVE EVALUATIONS
FUNCTIONAL MODELS
MATHEMATICAL MODELS
MINE HAULAGE
PRESSURE DROP
TRANSPORT
CARBONACEOUS MATERIALS
ENERGY SOURCES
FOSSIL FUELS
FREIGHT PIPELINES
FUELS
MATERIALS HANDLING
PIPELINES
013000* - Coal
Lignite
& Peat- Transport
Handling
& Storage