Distillation Performance of Beehive Packings

Abstract

Using beehive packings which were regular and had nowall effect, a relationship between H_OG and the reflux ratio γ (1 to ∞) was observed. Experimental conditions were as follows; tower diameter : 78 mm, packed height : 500 mm, sample : methanol-water system, determination of vapor concentration : differential condensation temperature method. H_OG varies largely depending on r when r is less than 10 and mass velocity of vapor G is less than 60% of flooding velocity. This relation can be expressed by the following equations :
packing A (ε = 0.92) H_OG = 0.99 γ^-0.82
packing B (ε = 0.90) H_OG =0.01 G ^0.45 γ^-0.47
When γ is greater than 10, H_OG approaches the values at total reflux.