Journal article
Operating points for pipelines carrying concentrated heterogeneous slurries
Department of Civil Engineering, Queen's University, Ellis Hall, Kingston, ON, Canada K7L 3N61
Centre for Environmental Strategy, University of Surrey, Guildford, GU2 7XH, UK2
Division of Water Research Engineering, Lulea University of Technology, Lulea, S-97187, Sweden3
Early studies of slurry pipeline systems were based on moderate volumetric concentrations of solids (say up to 18%), for which the excess pressure gradient caused by solids is proportional to concentration. Much larger concentrations now coming into common use show more complicated behaviour. An algebraic analysis is developed to determine desirable operating points and associated energy consumption for settling slurries.
This deals initially with the simple proportional behaviour, and then is extended to other cases. Comparison is made to recent experiments using highly concentrated settling slurries with various particle gradings. It is found that near-uniform gradings tend to have high frictional losses, while very broad gradings can give rise to energy-efficient transport at high concentrations.
| Language: | English |
|---|---|
| Year: | 2001 |
| Pages: | 19-24 |
| ISSN: | 1873328x and 00325910 |
| Types: | Journal article |
| DOI: | 10.1016/S0032-5910(01)00423-5 |
