JPS59189296A - Packing material for mass and heat exchange tower - Google Patents

Abstract

PURPOSE:To enhance the heat exchange performance by a method wherein liquid is uniformly distributed during heat exchange process due to the self-wetting power of laminate sheets and at the same time turbulence is caused in gas. CONSTITUTION:A unidirectionally ribbed laminate sheet 1 consists of at least two laminate sheets, which are made of self-supporting and hard woven fabric 2 or knit fabric 3 and contact with one another. In one pair of laminate sheets constituted as mentioned above, the dimensions of texture or stitch of the respective adjacent laminate sheets are different from one another. The dimension of texture or stitch of a coarse woven fabric or a knit fabric with coarse meshes in not less than 0.2mm. and less than 10mm. respectively. By the manner as mentioned above, the contact surface area can be made extremely larger than that of a single laminate sheet. Mass and heat exchange can be enhanced with the pressure drop nearly equal to the pressure drop developed with the packing material composed of ribbed laminate sheets, each of which consists of a single laminate sheet.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention consists of ribbed laminates of woven fabric or thin structure arranged parallel to the base axis and in contact with each other, the ribs of adjacent laminates having different directions, In this case, one of the laminates is made of a woven or knitted fabric that has self-supporting and rigid properties and is in contact with two or more plates having ribs in the same direction, and the adjacent laminates are The size of the stitches in the weave of the board is different, and the size of the stitches in the weave of the board is 0.2 rrvn or more in large-mouthed woven fabrics or knitted fabrics.
The present invention relates to a substance and a filler for a heat exchange column, which are characterized in that the temperature is less than 0 rtvn.

It is known that fillers of this type are used to carry out chemical reactions such as distillation, absorption, dissipation and extraction. Packing materials of this type bring gas and liquid into contact within the column for mass exchange and require large contact surfaces so that they obtain a high phase exchange efficiency. There is a known filling material that consists of ribbed laminates that are arranged parallel to the base axis and in contact with each other, and the ribs of adjacent laminates have different directions. The laminated board is made from a single piece of wire mesh. In order to increase the contact surface between gas and liquid in such a filler, the height and width of the ribs are reduced, and the angle to the base axis is increased to increase the contact surface per volume of r1. Although it can be increased, there is a limit in terms of I:E force drop. The angle with respect to the basic axis and the number of packed sheets per 11i-position area are necessarily determined by the operating conditions of the column, so in order to obtain a contact surface larger than that, one packing height must be increased. Otherwise, the problem of introducing further pressure drop occurs. It is also known to insert a piece of fabric without ribs or a thin material between two ribs facing in different directions in order to increase the contact surface. This prevents the generation of gas turbulence that misses 1 L of mass transfer, and even if the contact surface can be increased, the contact efficiency cannot be improved that much. In addition, a wire member is provided on a sheet that is a known filler and does not have supporting properties itself, and is arranged parallel to the base axis according to the present invention,
There is also a filler made of ribbed laminates that are in contact with each other, and the adjacent ribs have different directions, but in this case, if the reinforcing member is made of wire mesh, for example, and the sheet to be reinforced is not self-supporting, or In other words, because the sheet is soft, the reinforcing contact area is in close contact with the surface of the reinforcing wire.
There is a tendency to fill in the gaps created at the intersection of the vertical lines and horizontal lines of the wire mesh.

For this reason, liquid tends to accumulate in the close-contact portion of the wire net Yoshi sheet, resulting in the problem of an increase in bold amplifier, which is disadvantageous when this type of filler is used.

The present invention has been devised to solve the problems mentioned above, and the feature of the present invention is that two or more ribbed laminates pointing in one direction are in contact with each other. A fabric with support and rigidity is composed of laminates made of knitted fabric, and is the weave size of each adjacent laminate in a set of laminates. The size of the weave or stitches is 0.2 rtrm or more and less than 10 rtrm in a large woven fabric or knitted fabric.

In this way, the contact surface area can be made extremely large compared to a single laminated plate, and the material and heat can be exchanged with almost the same pressure drop compared to a filler made of a single ribbed laminated plate. It is possible to increase the

In the present invention, the textures and mesh sizes of adjacent laminates in a set of laminates are different. For example, if the laminates are made of wire mesh, the same mesh size is used. 2 pieces of wire mesh in 1
If a set of laminates is constructed, the mesh size of the two wire meshes is very fine to obtain self-wetting properties, such as O
, l wm, the liquid will be sufficiently distributed on the inner parts of the two laminates where they are welded, but the contact of the gas with the liquid on the inner parts will wet the outside of the laminates. This causes a problem in which the saliva phase gets in the way and becomes extremely bad.

In the case of one piece of fine wire mesh having self-wetting properties,
The other one does not have self-wetting properties, but has a coarse texture such as 3
Using a wire mesh with a mesh size of about wn is extremely advantageous in preventing the contact inner surface from coming into contact with gas. In that case 1
Due to the self-wetting power of the sheets, the liquid is evenly distributed during the heat exchange process, and the uniform distribution of the liquid also wets the other sheets. In addition, in the present invention, the woven fabric or knitted fabric has self-supporting properties and hardness.For example, if a unidirectional laminate is composed of two wire meshes, each of the two laminates has self-supporting properties and hardness. Because of this, the gaps that occur at the intersection of the vertical lines and horizontal lines of the two wire meshes at the contact area tend to cancel each other out, so that the liquid can flow smoothly through the gaps. This will solve the problems that occur when they are in close contact. Also, the coarse wire mesh of the two wire meshes can cause turbulent flow in the gas, and since it has the above-mentioned voids, the turbulence can be further promoted compared to the case without voids. . In this case, the mesh size of the coarse wire mesh is 0.2 ran or more J110wn
is considered to be less than This is a feature of the present invention.

Regarding the angle of the ribs of the laminate, which is known, it is advantageous to have an angle of 20 DEG to 70 DEG with respect to the vertical.

The present invention includes the following embodiments.

1. Filling according to the claims, characterized in that the laminate is a wire fabric.

2. The filling side according to the claims, characterized in that the laminate is a knitted fabric of wire.

(3. The filling described in the claims, characterized in that it is a laminate or a thin piece of synthetic resin.)

4. A mesh of one laminate in a fabric forming a set of laminates.
The filler according to the claims, characterized in that it is smaller than 0.1.11111 in one direction.

5. The filling material according to the claims, characterized in that the angle between the lip and the vertical line is 20 to 70 degrees.

6. The filling material according to the claims, characterized in that the laminate is perforated at intervals.

[Brief explanation of the drawing]

FIG. 1 shows the laminates unassembled as fillers. Three sets of laminates with lips (1 in FIG. 1) showing the same direction are shown, with each set consisting of two sheets. Each set of laminates has ribs in different directions, so when assembled, one set of silk laminates and another set of adjacent laminates will intersect. becomes. Perforations are provided at intervals to improve gas exchange within the filling material. Figure 2 is a cross-sectional view of a set of ribbed laminates, with a coarse mesh woven or knitted fabric (2 in Figure 2) and a fine mesh woven or knitted fabric 1l-1: knitted fabric (Figure 2). This shows the state in which 3) is overlapped. Figure 3 shows a void (void) created at the intersection of the warp (4 in Figure 3) and weft (5 in Figure 3) of a laminate made of a woven or knitted fabric that has self-supporting and rigid properties. FIG. 3 is a cross-sectional view showing 6) in FIG. 3; Figure 4 shows the soft sheet (1 in Figure 4) with vertical lines (4) with wire mesh.
Figure 2) shows the horizontal line (3 in Figure 4) and the state of the soft sheet. Patent Applicant: 3-20-4 Nishinakajima, Yodogawa-ku, Osaka City Representative: Yasumi Kawamura Seta Kosan Kako Co., Ltd. 8 - Procedural amendment (method) 1. Indication of case Patent application No. 62005/1982 Title of invention Substance and packing material for heat exchange column 3
Relationship with the case of the person making the amendment Patent application Person address 3-20-44 Nishinakajima, Yodogawa-ku, Osaka-shi, Osaka Prefecture
, Date of amendment order July 6, 1982 5 Subject of amendment Drawing 6 Contents of amendment Engraving of drawing (no change in content) 4
70-

Claims (1)

[Claims] As an example of packing for materials and heat exchange columns in which gases and liquids are contacted by countercurrent flow, ribs of woven fabric or slender structure in which the packing materials arranged parallel to the cardinal axis are in contact with each other. Consisting of two or more laminates, where the ribs of adjacent laminates have different directions, one of the laminates has ribs in the same direction. It is composed of a laminate consisting of a woven fabric or a thin material having a size, in which the weave cut or stitch size of adjacent laminates is different, and the weave cut or stitch size is a large woven fabric. A filling material for a heat exchange tower and a substance characterized by having 0.2 or more and less than 10 particles in a fabric or a knitted fabric.