CS203087B2 - Filling corpuscle for the appliance for contacting the fluids with gases - Google Patents

Abstract

1483714 Packing material CIBA-GEIGY AG 27 March 1975 [5 April 1974] 13118/75 Heading B1R A packing material unit having a spheroidal shape for gas purification systems comprises a plurality of rods 1 arranged substantially parallel to each other on a carrier perpendicular thereto comprising ring elements 2a, 2b and 2c and disc element 2d arranged coaxially with, but spaced from each other and having differing diameters. The rings are attached to each other and the disc by ribs 2e. The elements may alternatively be polygonal in shape.

Description

(54) Padding for liquid-to-gas contact equipment

BACKGROUND OF THE INVENTION The present invention relates to a filler body for a device for contacting liquids with gases.

The filler bodies are used in a variety of shapes in liquid-gas contacting devices wherever the greatest possible surface area is to be formed within a certain volume. In gas scrubbers, filler bodies in the form of wire formations have proven to be particularly effective, since they have an extremely high ratio between the space occupied and the space filled with the construction material itself. One of the best known filler bodies of this kind so far is described in U.S. Patent No. 2,867,425. It is made of plastic and has the shape of a spiral whose start and end are joined together. However, this known filler body has the disadvantage that, due to its complex shape, it is only relatively difficult to manufacture and consequently expensive.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a filler body which is simple to manufacture and inexpensive to operate, yet at the same time operationally satisfactory.

According to the invention, the filling element for a gas contacting device consists of a Kose-shaped carrier comprising at least two concentric, circumferentially arranged circumferential members arranged in the form of closed circumferences of centrally symmetrical geometric figures with graduated diameters. circumscribed circumferentially carrying at least four rods parallel to one another, regularly spaced along the circumference of the individual circumferential members at the points lying on the circumference of the circumferential members, the length of the rods decreasing from the axis of the circumferential members and the ends of the rods defining a spherical surface the individual peripheral members are connected to each other in a basket-shaped support by connecting bars, and wherein the spacing between the rods is two to ten times their diameter.

In the case of the polygonal shape of the circumferential member, the term symmetrically symmetrical geometric pattern means the symmetry of the vertices of the image relative to its center. The only important thing is the regular and centrally symmetrical arrangement of the pole-bearing peaks on the circle of the circumscribed polygon. The shape of the sides of the mono-polygon between individual vertices is not critical. It can be adapted to manufacturing aspects and can be both straight and curvilinear. Also included within the scope of the invention are polygons with an odd number of centrally symmetrical peaks, as well as polygons with centrally symmetrical peaks and sides in the form of curve segments.

The shape of the filler body according to the invention thus designed is easy to manufacture and the bodies thus produced are cheaper than the other hitherto known. In addition, compared to known bodies, this shape makes it possible to achieve substantially lower gas pressure losses at the same liquid inflow rate. This ^one drop of gas pressure reduction obviously leads to lower demands on energy input, so the invention provides a reduction not only of its own, but also the operating costs of facilities for placing liquids in contact with the gases.

The invention is further explained in the following description by way of example with reference to the accompanying drawings, in which:

Fig. 1a shows a side view of a filler body according to the invention in a direction perpendicular to the rods;

As can be seen from the drawings, the filler body consists of a series of parallel rods 1 of circular cross section, which are supported on a common carrier 2. The carrier 2 is axially symmetrical with respect to an axis parallel to the rods 1. such that the entire filler body is approximately spherical in shape. Of course, another, for example, ellipsoid-like surface of the filler body would also be possible.

The carrier 2 comprises three parallel circumferential members 2a, 2b and 2c and a disc member 2d. The three circumferential members and the disc member are held together by the rib bars 2e to form a substantially conical basket. This arrangement ensures that the spaces between the two circumferential members and the two crossbars are not too small and therefore do not have a large flow resistance. The largest circumferential member 2a is provided on its outer side with radial projections 2f, which at their ends each carry one rod 1.

Instead of a conical basket, a pyramidal basket can also serve as a rod carrier. In this case, the parallel circumferential members have the shape of polygons, such as angles or hexagons. It is preferred to use at least two circumferential members that each carry at least four rods.

The filling element described is very easy to produce by injection molding, since the casting mold required for this is in itself relatively simple. It is only necessary for the mold to consist of two parts, wherein the dividing surface is a conical surface -and falls within the outer-envelope surface of the crossbars 2e. The negative cavities for forming the peripheral members and partitions are then simply formed by annular grooves and grooves extending in the direction of the surface lines through the mold surfaces. The rods 1 correspond to parallel passages in both mold halves. The passages may be cylindrical or, for ease of deformability, preferably conical.

In order for the described filler body to perform perfectly the intended task, the distances between two parallel rods should not be less than approximately twice their diameter. Preferably, the distances are approximately two to ten times the diameter of the rods. Furthermore, the loops of the basket-shaped carrier, i.e. the gaps bounded by two circumferential members and two ribs, should be as large as possible. When these conditions are met, the padding body has no enhanced preferred directions in terms of flow resistance, which means that it is approximately equally effective at any desired position.

Claims (1)

I will invent the object Packing element for a device for contacting liquids with gases, characterized in that it comprises a basket-shaped support (2j) comprising at least two concentric, circumferentially parallel, circumferential members (2a, 2b, 2c) in the form of closed circuits centrally symmetrical geometric figures with graduated diameters of the circumscribed circumferences thereof, carrying at least four parallel arranged bars (11), regularly spaced around the circumferences of the individual circumferential members (2a, 2b, 2c) at points lying on the circumscribed circumferences thereof, - from the axis (4) of the peripheral members (2a, 2b, 2c) - sinks and the ends (3) of the rods define a spherical surface or a rotating ellipsoid, - the individual peripheral members (2a, 2b, 2c) being connected to each other (2) in the shape of a basket by connecting bars (2e), and wherein the spacing between the rods (1j) is two to tenths multiple of their diameter.