Maldistribution, packings, liquid small-scale

A packed column has reasonable tolerance for a uniform or smooth variation in liquid distribution and for a variation that is totally random small-scale maldistribution). However, the impact... 

Figure 0.7 Comparing the effects of "small-scale and large-scale" maldistribution on packing HETP. (a) Comparing the effect of a simulated continuous tUt (max/ min flow ratio = 125 ) to the simulated effect of blanking a chordal area equal ts 11 percent of the tower area, (b) Comparing the effects of simulated continuous tilts (max/min flow ratios 125 and 1.5) to the effects of a situation where one-half of the distributor passes 25 percent more liquid to the other hen. (c) Comparing the effects of random maldistribution to these of zonal maldistribution. (Ae-...

Hoek, P.J. Wesselingh, J.A. Zuiderweg, F.J. Small scale and large-scale liquid maldistribution in packed columns. Chem. Eng. Res. Des. 1986, 64, 431-449. 

Hoak, P. J., Large and Small Scale Liquid Maldistribution in Packed Column, Ph.D. Thesis, Delft University, Netherland, 1983. 

Zuiderweg, F. J., and P. J. Hoek, "The Effect of Small Scale Liquid Maldistribution on the Separating Efficiency of Random Packings, I. Chem. E. Symp. Ser. 104, 1987, p. B247. 

Hoek et al. [128] noted also that with random packings a semi stable flow distribution developed rapidly in the main body of the packing bed, which they called natural flow or small-scale maldistribution . It is characterized by severe channelling, or rivulet formations, of the liquid. Channelling is... 

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