Packings Berl saddles

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. 

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

For vaporization in packed beds of Raschig rings and Berl saddles [66] ... 

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). 

For 1-in. Berl saddles allow 2.0 ft for good liquid distribution through the packing from the top. 

Then height of tower packing, using 1-in. Berl saddles ... 

Figure 11.37. Types of packing (Norton Co.), (a) Raschig rings (b) Pall rings (c) Berl saddle ceramic (d) Intalox saddle ceramic (e) Metal Hypac (/) Ceramic, super Intalox...

Their correlations were based on a large amount of data on gas absorption and distillation with a variety of packings, which included Pall rings and Berl saddles. Their method for estimating the effective area of packing can also be used with experimentally determined values of the mass-transfer coefficients, and values predicted using other correlations. 

The checkers used an 18-in. column packed with Berl saddles. 

Laurie acid, m.p. 44°, was prepared from the commercial acid obtained from Armour and Company, Chicago, Illinois. The acid was recrystallized twice from acetone at —40° (10 ml. of acetone per gram of acid) and distilled under reduced pressure through a well-insulated, electrically heated 30 by 1 in. column packed with -in. Berl saddles. Pure lauric acid has a boiling point of 167-168°/8 mm. and nff 1.4316. The Eastman Kodak Company grade of lauric acid melting at 43 4° is satisfactory. 

Oxetane (1.3-trimethylene oxide) [503-30-0] M 58.1, b 45-46°/736mm, 47-49°/atm, 48°/760mm, d4° 0.892, n2D°1.395. Distd from sodium metal. Also purified by preparative gas chromatography using a 2m silica gel column. Alternatively add KOH pellets (50g for lQOg of oxetane) and distil through a column packed with l/4in Berl Saddles and the main portion boiling at 45-50° is collected and redistd over fused KOH. [Noller Org Synth Coll Vol III 835 7955 Dittmer et al. JACS 79 4431 1957]. 

Berl saddles, Lessing rings, Nielson propeller packing, Hechenbleikner blocks, Stedmann packing, Bregeat multiple spirals etc. Here, as in the case of plate towers, the liquid flows from the top of the tower and the gas enters at the bottom... 

The amount of liquid holdup in the packing is of interest when the liquid is unstable or when a desirable reaction is to be carried out in the vessel. A correlation for Raschig rings, Berl saddles, and intalox saddles is due to Leva (Tower Packings and Packed Tower Design, U.S. Stoneware Co., Akron, OH, (1953) ... 

Berl Saddles. P ieces of chemical porcelain, chemical stoneware or carbon in the shape of saddles, used for packing absorption tower or distn columns. They are manufd under trade name "Intalox Saddles" by the US Stoneware Co, Akron 9, Ohio... 

A schematic process flow sheet is shown in Figure 2. Inlet gas, a mixture of methane, hydrogen and carbon monoxide at 100°F and 500 psia (stream 1) is successively cooled to -140°C by the outlet gas stream from the absorber and some recycle gas. The absorber is a packed column of 1-in. berl saddles with 50% void fraction. The rich liquid from the bottom of the absorber is heat exchanged with the bottom liquid from the stripper. The stripper is also a packed column with 1-in. berl saddles. The dissolved methane, hydrogen, and carbon monoxide is stripped out by heating at the bottom of the stripper. The outlet gas stream from the stripper is heated in a heat exchanger by a recycle gas stream and is further compressed to produce the final methane product at 100°F and 1000 psia. 

Table II shows that, as packing size increases, packing capacity rises while packing efficiency decreases. It also shows that both capacity and efficiency are greater for Pall rings and Intalox saddles than for Raschig rings and Berl saddles.

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