Process Equipment and Plant Design
Diameter of the seive tray column is determined by the

Upper limit of the vapour velocity
Height of the plate spacing
Hole diameter of the seive tray
Lower limit of vapour velocity

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Process Equipment and Plant Design
Mc Cable Thiele method used for finding theoretical stages in a distillation column assumes that the

Sensible heat differences are small, because the temperature changes from tray to tray is small
All of these
Trouton's rule is applicable
Liquid/vapor loading across the column remains constant

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