Orifice mixing column

Inline motionless mixers derive the fluid motion or energy dissipation needed for mixing from the flowing fluid itself. These mixers iaclude orifice mixing columns, mixing valves, and static mixers. 

Orifice Mixing Column An orifice mixing column consists of a series of orifice plates contained in a pipe. The pipe normally is fabricated of two vertical legs connected by a return bend at the bottom with the orifice plates installed between flanges in the vertical legs. Typical use is for cocurrent contacting in caustic and water washing operations. 

Oriented polystyrene film, 23 408-409 Orifice mixing columns, 16 712 Orifice plates, 11 657-659 26 680 Orifice viscometers, 21 729-730 ORIGEN code, 19 673 Orimulsion, 3 769... 

Fig. 174. HAFID modified from a Hewlett-Packard FID. Air enriched with O2 is passed down the outside of the jet through an orifice not pictured above and mixes with the GC effluent at the column exit.

The orifice column is widely used for mixing. With an average orifice discharge coefficient of 0.66, the permanent loss is about 95 per cent of the pressure differential. Using these figures and when expressing velocity as barrels per hour, the following formula results ... 

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