Pressure drop irrigated pall rings

Based on Eq. (5-10), the numerical value of the pressure drop of irrigated Pall rings is given as ... 

A packed tower is to be designed for the countercurrent contact of a benzene-nitrogen gas mixture with kerosene to wash out the benzene from the gas. The gas enters the tower at the rate of 1.5 m3/s, measured at 110 kPa and 298 K, containing 5 mol% benzene. Essentially, all the benzene is absorbed by the kerosene. The liquid enters the tower at the rate of 4.0 kg/s the liquid density is 800 kg/m3 and the viscosity is 2.3 cP. The packing will be 50-mm metal Pall rings, and the tower diameter will be chosen to produce a gas-pressure drop of 400 Pa/m of irrigated packing. 

Table 4-1 contains a Kst of some important studies [ 1-21,25,41-48] on the pressure drop of irrigated packings in columns with conventional packing elements, such as Raschig rings, Pall rings and Intalox saddles. The work can be divided into three groups. 

The applicabiKty of Eq. (4-50) for determining the pressure drop of irrigated random packings at laminar liquid flow for Reynolds numbers in the range 0.1 < ReL < 2, was verified based on experimental pressure drop data for 25 mm metal Pall rings, taken by... 

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