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Pressure drop in irrigated packed columns

1991; Elsevier BV; Volume: 29; Issue: 2 Linguagem: Inglês

10.1016/0255-2701(91)87018-x

1873-3204

J. Maćkowiak,

Advanced Control Systems Optimization

In this work, an equation for determining the pressure drop of irrigated packings is introduced. This is built up from the well-known channel model. It is valid for the whole load range up to the flooding point. The validity of the formula was checked using measurements taken from about 80 different classical and modern packing elements, such as Pall rings, Raschig rings, VSP rings, Hiflow rings, ENVIPAC, DINPAC, Tellerette, Tri-Pac (Hackette), Glitsch-CMR rings, Nor-Pac, Bialecki rings, I-13 rings, Intalox saddles, Montz-Pak, Mellapak 250Y, Ralu-Pak 250YC, Gampak and other types, made of metal, ceramic and plastic (about 4000 measuring points). To apply the pressure drop formula, it is necessary to know the operating conditions, the liquid hold-up and the form factor μ specific to the packing element or group of packings. The method of calculating the pressure drop is illustrated by means of an example.