Plug separation

Further analysis of plug flow has been given by Destoop and Russell (1995) with a simulated computer model for catalyst and polymer materials. The model was developed based on piston-like flow of plugs separated by plugs of gas. The model has been employed taking into account the product grade, temperature, flow rates and line configuration. 

Sand can be very troublesome in separators by cutting out valve trim, plugging separator internals, and accumulating in the bottom of vessels. Special hard trim can minimize effects of sand on valves. Accumulations can be alleviated by use of cone bottoms (for vertical vessels), sand jets and drains, as discussed earlier. 

Microfluidk Devices for Combinatorial Chemistry, Fig. 3 Fluidic transport of samples applied to testing pharmaceuticals. Cells are carried in the channels inside liquid plugs separated by air bubbles, hi this case, the layout mimics the titre-plate layout, using its advantage of simultaneous evaluation of all samples... 

Inspection of container, cover, vent plug, separator, packing material, and accessories... 

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