Stability of coal-oil mixtures [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: 28 : digital, PDF file
- Additional Creators
- United States. Department of Energy and United States. Department of Energy. Office of Scientific and Technical Information
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- Restrictions on Access
- Free-to-read Unrestricted online access
- Summary
- The settling behavior of both stabilized and nonstabilized coal-oil mixtures was investigated. Thirteen stabilizers were tested under standardized conditions. Several were found to be partially effective for the coal-oil combination studied. The majority provided no improvement over the nonstabilized mixture and, in fact, decreased the stability in some cases. The studies of nonstabilized mixtures considered five different oils and several coal concentrations. Some effect, due to oil type, was found. A fifty percent mixture was found to be stable in the oil used for the stabilizer tests. Measurements of the shear stress/shear rate relationship were made for the oils and mixtures studied, using two types of viscometers: a concentric-cylinder device and an extrusion rheometer. These data were used to examine the role of viscosity in establishing the settling rates found for the nonstabilized mixtures tested. The viscosity data are also of value in predicting pressure drop in pipeline flow and may be used, in conjunction with the settling curves, to compare simple models of sedimentation, i.e., free, hindered, compressive, to identify the mechanisms of settling in coal-oil mixtures.
- Report Numbers
- E 1.99:conf-7805152-1
conf-7805152-1 - Subject(s)
- Note
- Published through SciTech Connect.
01/01/1978.
"conf-7805152-1"
1. international symposium coal oil mixture combustion, St Petersburg, FL, USA, 8 May 1978.
Ekmann, J M; Bienstock, D.
View MARC record | catkey: 23505576