Flow segregation

Hydrodynamic regime is close to a plug-flow. Segregation of gas is strong. 

Fines may lodge between tubes Particles can fracture Fines compact, impeding flow Segregation may occur as fines percolate into sample more easily than coarse particles A plug of powder can be pushed ahead of thief and surface material contaminates sample... 

Carbonell, R.G. 1979. Effect of pore distribution and flow segregation on dispersion in porous media. Chem. Eng. Sci. 14 1031-1039. 

The phenomenon of flow segregation has been commercially explored. For example, a high vis-... 

On the other hand, if one looks at the whole system, a number of phenomena can take place segregation, encapsulation, interlayer slip or variations of miscibility. Components can segregate during the flow, leading to spatial redistribution, encapsulation of one phase by the other being a special case of flow segregation. A redistribution of the phases was observed for HDPE/PA-6 blends during capillary flow [Dumoulin et al.,... 

Type of flow Segregation Normal Normal Segregation Segregation... 

An increase in conversion operations (fluid catalytic cracking and visbreaking) which means more phenol and sulfide discharges. This is compounded by the fact that recycling spent caustic downstream from the desalter may be excluded by visbreaker feed Na requirements, Tliis is why all prior stripping operations and flow segregations on the condensates from these units must he well planned and enhanced. 

L Flow variation due to natural convection or variations in the local hydrodynamics due to turbulence flow segregation, gas evolution or secondary flows (such as jetting or vortexing). 

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