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Volume :27 Issue : 2 2000      Add To Cart                                                                    Download

Comparison of coarse slurry pipeline models

Auther : A.R. KHAN* AND J.F. RICHARDSON**

*Department of Chemical Engineering, Faculty of Engineering and Petroleum, Kuwait University, P.O. Box: 5969, Safat, 13060, Kuwait
**Chemical Engineering Department, University of Wales, Swansea, Singleton park, Swansea SA2 8 PP.UK
 
ABSTRACT
 
The most successful models for predicting the pressure drop for the flow of heterogeneous mixtures of solids and liquids in pipelines are based on force balances.  The distribution of solids over the cross-section of the pipe must either be known or assuemed and the most commonly used model for the interpretation of experimental results is the two-layer model in which the particles in the upper layer are in suspended flow and those in the lower layer are (at least partially) supported by forces arising from the interactions between the particles and the pipe wall. The model is being progressively developed and experimental results for transport of solids in a small (38 mm) horizontal pipeline are compared with predictions from three versions of the model.  In addition, experimental results for a large pipe (263 mm) have been compared with two of the models.  A comparison with the experimental results, shown as points, shows a satisfactory agreement with both models (Richardson et al. [1996] and Modified Wilson Model [Gillies et al. 1991]) the former being a little closer for both small and large pipeline data.

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