2. Trays
The tray is the column's active element: its function is to bring the liquid and gas phases into contact, so as to bring them as close as possible to equilibrium.
2.1 Plateau zones
The different zones of the plateau are shown in figure 4 .
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Trays
References
Manufacturers. Suppliers
(non-exhaustive list)
Carbone-Lorraine (graphite and noble metal trays) http://www.carbonelorraine.com
Koch-Glitsch (Koch, Glitsch, Nye trays, etc.) http://www.koch-glitsch.com
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Organizations
American Institute of Chemical Engineers (AIChE) http://www.aiche.org
Fractionation Research Inc. (FRI) http://www.fri.org
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