Sulzer structure

Koch-Sulzer structured packing, with a packing factor of 200rn7rnT... 

It is proposed, as an alternative to trays, to pack the same column with Koch-Sulzer structured packing, with a packing factor of 200m-/m- . Using the same fluid flow rates and properties as in the trayed design, estimate the packed column pressure drop, and check for the possibility of flooding or channeling. 

Figure 9-8G. Koch/Sulzer trough distributor (MDP), for medium to large diameter columns for structured packing (patented), one of several designs available. Used by permission of Koch Engineering Co., Inc., Bull. KS-6.

General/Average unknown Koch/Sulzer (R) structured 3 in.-9 in. 

The older tall oil distillation columns used bubble cap trays. In new columns, structured packing is preferred. Because of the low pressure drop of structured packing, steam injection is no longer necessary. The low liquid holdup of this packing minimizes the reactions of the fatty and resin acids. A specific distillation sequence for vacuum columns using structured packing of Sulzer has been described (26). Depitching is carried out at a vacuum of... 

FIG. 14-51 Illustrative cutaway of a packed tower, depicting an upper bed of structured packing and a lower bed of random packing. (Courtesy of Sulzer Chemtech.)... 

FIG. 14-60 Effect of structured packing surface areas, loads, and inclination angle on packing efficiency. Efficiency expressed as number of theoretical stages per meter, the reciprocal of HETP. Sulzer data, chlorobenzene-ethylbenzene, 100 mbar, at total reflux 250-mm-diameter test column. (Reprinted courtesy of Sulzer... 

Toya et al. [13] used X-ray tomography to scan gas/liquid flow in a corrugated structured packing known as Sulzer Mellapak 250 Y. The solids profile of the dry structured packing was reproduced with fair accuracy. The scan was performed in a 60-cm-diameter column. Very thin liquid film flowing past the structure at 0.006 m/s was also detected by the tomography unit. 

For the cases when efficient mixing has to be coupled with a solid-catalyzed reaction a whole family of open-crossflow-structure catalysts has been developed. The best known of them are the so-called KATAPAK s, commercialized by Sulzer. One of them, KATAPAK-M is shown in Figure 10. It has good mixing properties and can simultaneously be used as the support for catalytic material. 

The reactor internals, consisting of structured packings packed with catalyst particles, are also examples of arranged catalysts, e.g., the Sulzers Katapak-S type. 

Figure 8 (a) Schematic of an RD column filled with catalytic internals CD TECH (1—catalytic balls, 2—feed, 3—distillate, 4—bottom product, 5—sieve tray) and (b) catalytic structured packing Sulzer Katapak-S. (Part a from Ref. 52.)... 

Sulzer Chemtech Company Gauze structured packing, type CY... 

The potential of structured packings as catalyst carriers for reactive stripping, film-flow-monoliths, Sulzer DX -packings, both coated with zeolite BEA, and katapak-S , filled with BEA-particles, was explored in cold-flow experiments and under reactive stripping conditions in a pilot-scale plant. 

Pilot-plant experiments have been carried out at real process conditions in the coke plant August Thyssen (Duisburg, Germany). The DN 100 pilot column (Fig. 9.11) was made from stainless steel and equipped with about 4 m of structured packing (Sulzer MELLAPAK 350Y), three liquid distributors, and a digital control system. Several steady-state experiments have been compared with the simulation results and supported the design optimization of the coke gas purification process [91]. 

Fig. 1. Catalytic structured packings KATAPAK -S (left) and KATAPAK -SP-11 (right) by Sulzer Chemtech Ltd.

Fig. 2. Structured packings metal Mellapak by Sulzer Chemtech Ltd (left), Montz-Pak A3-500 by Julius Montz GmbH (middle) and plastic Mellapak by Sulzer Chemtech Ltd (right).

Hgim ftuS Wire-mesh structured packing . <0) Saber wire gauze packing BX (6) Sulzer wire gauze packing CY. IParta a and o, courtesy of Sober Chemteeh.)... 

Rgure B.1S GPDC interpolation plots for structured packings flood points, i.o) The Fair and Bravo plot for Sulzer BX and Mellapek 250Y. (Part a. from J. R, Fair and J. L, Bravo, I, Citem, E, Symp. Ser, No. 104, p. A183,... 

The Bravo, Fair ei al. correlation for structured pecking. Bravo, Rocha, and Fair (124) developed the first published fundamental model for structured-packing efficiency. This model was developed for the Sulzer BX wire-mesh packing, but has recently (25,50) been extended to... 

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