JP-2026075011-A - Packing for gas-liquid contact

Abstract

【assignment】 To obtain a gas-liquid contact filler that has high gas-liquid contact efficiency and can be formed from lightweight and inexpensive materials. [Solution] A woven or knitted fabric formed from a composite yarn 44 composed of a single fiber and a wire, a combination of a single fiber yarn 42 composed only of a single fiber and a wire yarn 43 composed only of a wire, or a combination of all or any of the single fiber yarn 42, the wire yarn 43, and the composite yarn 44, wherein a strip material 71 with gaps between the yarns 46 is made into an accordion shape by alternately folding mountain folds and valley folds in a direction intersecting the length direction of the strip material 41, and a plurality of such accordion-shaped strip materials 41 are stacked on top of each other. [Selection Diagram] Figure 1

Inventors

• 大田 二郎

Assignees

• トウトクエンジ株式会社

Dates

Publication Date

20260507

Application Date

20241021

Claims (6)

1. A gas-liquid contact filler characterized by being formed from a composite yarn composed of a single fiber and a wire, a combination of a single-fiber yarn composed solely of single fibers and a wire yarn composed solely of wire, or a woven or knitted fabric formed from all or any combination of the single-fiber yarn, the wire yarn, and the composite yarn, wherein a strip material with gaps between the yarns is layered on top of each other.
2. The above-mentioned strip material is formed into a bellows-like shape by alternately folding mountain folds and valley folds in a direction intersecting the length of the strip material, and the gas-liquid contact filler according to claim 1 is characterized by being made up of multiple layers of such bellows-like strip material.
3. The above-mentioned strip material is characterized by being composed of threads consisting of one or more single fibers and one or more wires, as described in claim 1, for gas-liquid contact.
4. The above-mentioned strip material is characterized by being composed of a single-fiber yarn consisting of one or more single fibers, a wire yarn consisting of one or more wires, and a composite yarn consisting of one or more single fibers and one or more wires, as described in claim 1.
5. The above-mentioned strip material is characterized by being folded in an alternating mountain and valley fold direction intersecting the length of the strip material to form a bellows-like structure, and by overlapping the strip material alternately with its front and back sides, as described in claim 1.
6. The above-mentioned strip material is characterized by being wound from one end to the other in the longitudinal direction, as described in claim 1, for gas-liquid contact.

Description

The present invention relates to a gas-liquid contact packing that maintains low pressure loss inside equipment such as distillation columns, absorption columns, chilling towers, and water treatment facilities involving air oxidation, and allows effective mass transfer, heat transfer, chemical transfer, or a combination thereof between gas and liquid by bringing them into contact in countercurrent, parallel, or crosscurrent flow. Gas-liquid contact packing materials include irregular packing materials, which are randomly packed within the device's internal space without considering individual positions or orientations, as shown in Patent Document 1, and regular packing materials, which are manufactured with predetermined dimensions to be arranged regularly within the device. Regular packing materials commonly used include thin sheets or mesh-like plates made of metal or plastic, which are bent into a corrugated shape and laminated, or those formed by weaving together multiple thin wires. These conventional structured packing materials possess the ability to maintain a three-dimensional shape within the material itself. Therefore, even when placed within a device, the shape and position of the packing are less likely to change due to the influence of the fluid, and the initial state can be maintained until the end. However, because such conventional packing materials are limited to those that can maintain a three-dimensional shape within the device, achieving an ideal gas-liquid contact state is difficult, and problems such as high cost and heavy weight have arisen. To solve these problems, it is ideal to form woven or knitted fabrics using fibrous materials that can be easily mass-produced industrially, such as natural fibers, synthetic fibers, glass fibers, and carbon fibers, and use them as fillers for gas-liquid contact. This is because using such materials would allow for a lighter overall weight of the apparatus, and would also improve gas-liquid contact efficiency by achieving a large surface area and high liquid retention capacity (water retention) due to capillary action. Japanese Patent Application Publication No. 11-090218 A plan view of a strip material showing Embodiment 1 of the present invention.A partially enlarged perspective view of the strip material from Example 1.Cross-sectional view along line A-A in Figure 1.A perspective view showing the state in which multiple strip materials are laminated in Example 1.A partially enlarged end view of Figure 4.A partially enlarged perspective view showing the packing material of Example 1 installed in the packed column.A perspective view showing Embodiment 2 of the present invention.A partially enlarged plan view of the strip material showing Examples 3 and 4.End view showing the bellows-shaped strip material in Examples 3 and 4. Embodiment 1 of the present invention will be explained with reference to the figures. (1) is a strip material, which is formed into a strip of a certain width by weaving yarn (2), and as shown in Figure 1, the width l of the strip material (1) is 100 mm. The yarn (2) is made by combining nine single fibers (not shown) and one wire (not shown). The single fibers are polyester fibers with a diameter of 0.23 mm, and the wire is made of stainless steel with a diameter of 0.25 mm. As described above, by using a thread (2) containing wire, a strip material (1) is formed using the thread (2). Even when the strip material (1) is folded into a three-dimensional shape, the presence of the wire allows it to maintain its shape well during use. In this embodiment, a wire with a diameter of 0.25 mm is used as described above, but from the viewpoint of shape retention, it is preferable to use a wire with a diameter of 0.2 to 0.4 mm. Furthermore, when a knitted fabric is formed using the thread (2) containing wire, the wires bend alternately up and down and intertwine tightly, resulting in a strong filling (13) when the strip material (1) is processed into a bellows-like shape. Furthermore, while the yarn (2) in this embodiment is formed from nine single fibers and one wire as described above, it is not limited to this in other different embodiments. The number of single fibers and wires can be changed according to the appropriate application, allowing for the use of various combinations of yarn (2). Also, in this embodiment and Embodiment 2 below, the band material (1) is formed by knitting the yarn (2). However, in other different embodiments, it is not limited to this. As shown in Embodiments 3 and 4 below, the band material (1) may be formed by weaving the yarn (2). Furthermore, since the yarn (2) constituting this invention is composed of multiple single fibers in addition to wire, the liquid diffuses across the entire surface of the single fibers due to capillary action, forming a uniform flow. Therefore, the rate of liquid descent becomes uniform throughout the packed column (12), resulting in effective gas-liquid contact. Moreover,