Berl saddle

E] Compared napthalene sublimination to aqueous absorption to obtain fsurface area as pacldug piece. Lc — operating void space = e —, where e =... 

For Raschig rings, Berl saddles, and spiral tile ... 

FIG. 14-67 Effective interfacial area based on data of Fellinger. (a) 1-in Raschig rings, (h) 1-in Berl saddles. To convert square feet per cubic foot to square meters per cubic meter, multiply by, 3.28 to convert pounds per hour-square foot to kilograms per second-square meter, multiply by 0.001,356. [Shul-man. Am. Inst. Chem. Eng. J., i, 2,57 (I,9,5,5).]... 

Nonwetted carbon rings and wetted Berl saddles log-... 

Mirra flakes Berl saddles Raschig rings... 

Efficient solvent separation is indicated by absence of yellow color in the distillate. An 18-in. column packed with Berl saddles is satisfactory. 

Chemical Stoneware and Ceramic Berl Saddle Packings ... 

Cost of the packing and its effect on the system costs must be considered, as some packings are much more expensive than others, yet produce very little improved performance. Table 9-17 presents some comparative information. The most common packings and hence the ones with the most available data are Raschig rings, Berl saddles, several saddle types and Pall Rings (Norton Co.) or equivalent. 

The D in. Intalox or Berl ceramic saddles would be the preferred choice because (1) the flooding point is sufficiently low and yet probably not too far from the load point (only flood data available, but would estimate 70-85% of load) (2) the surface area per cubic foot is essentially the same as for the existing 1-inch Raschig rings. By reference to the effective interfacial area graphs, and by using the Berl saddle data instead of Intalox as an estimate because it is not... 

Dump Intalox (or Berl) saddles into tower while tower is filled with water. 

Total hold-up, ht, of water is represented for Raschig rings and Berl saddles [66]. 

It is only recently that a coordinated group of data became available for wetted areas in Raschig ring and Berl saddle packing [65]. 

Figure 9-43 represents the water-air and ammonia-water data for Berl saddles by [65, 67] ... 

An existing lO-in. I.D. packed tower using 1-inch Berl saddles is to absorb a vent gas in water at 85°F. Laboratory data show the Henry s Law expression for solubility to be y = 1.5x, where y is the equilibrium mol fraction of the gas over water at compositions of x mol fraction of gas dissolved in the liquid phase. Past experience indicates that the Hog for air-water system will be acceptable. The conditions are (refer to Figure 9-68). 

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