Polymer drag reduction in large diameter coal log pipeline
- Univ. of Missouri, Columbia, MO (United States)
- Central Coal Mining Research Institute, Hebei (China)
A hydraulic capsule pipeline (HCP) drag reduction study is being conducted using a 210 mm inner diameter, 131 m long steel pipe loop located at the Research Park of the University of Missouri-Columbia (UMC). Polyox (trade name for polyethylene oxide) was tested alone and in combination with fiber for the first time for drag reduction investigations in such a large diameter HCP flow. A novel design of vacuum-aided Polyox dissolution and injection system was also tested for the first time in this pipeline. The injected polymer concentration present was determined on the basis of average concentration over the entire pipeline loop. Subsequently, more detailed data reduction will be presented based upon local polymer concentration in the test section determined by a dispersion model, which is being developed and will be calibrated to the experimental system using a fluorescent dye additive for experimental measurement. In addition, abrasion-resistant resin logs with cement additives for density control were employed to simulate coal logs. Results of this study not only answered some basic questions about drag reduction in HCP flow, it is also beneficial and important to HCP commercial applications.
- Research Organization:
- Coal and Slurry Technology Association, Washington, DC (United States)
- OSTI ID:
- 585414
- Report Number(s):
- CONF-980309--PROC.
- Country of Publication:
- United States
- Language:
- English
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