JP7125935B2 - Structured packing, sheet for structured packing, method for manufacturing sheet for structured packing, method for manufacturing structured packing - Google Patents

Description

The present invention provides a structured packing built into a distillation column used for separating each component from a stock solution in which a plurality of components are mixed, a structured packing sheet for constituting the structured packing, and the regular packing It relates to a method for manufacturing a filling.

The distillation column incorporates a plurality of block-shaped structured packings vertically (or horizontally if necessary) combined in order to carry out gas-liquid contact. For example, as described in Patent Document 1, each structured packing is formed by processing a sheet-like body such as a thin metal plate having holes or a mesh-like body such as a wire mesh into a corrugated plate shape and then laminating them into a block shape. It is said that

Japanese Patent Laid-Open No. 5-103978

Although a plurality of block-shaped structured packings are used in this way, the pressure loss is large at the boundary portions where the structured packings are superimposed in the vertical direction. As the operating load increases in the distillation column, the pressure loss rises, causing a phenomenon called "flooding" (a phenomenon that prevents liquid from falling inside the column), making it impossible to continue normal operation. there were.

Therefore, in view of the above problem, the present invention is a rule that can expand the operation range (operable load range) of a distillation column by suppressing the increase in pressure loss at the boundary portion where a plurality of structured packings are superimposed in the vertical direction. An object of the present invention is to provide a packing, a sheet for structured packing, and a method for manufacturing the ordered packing.

The present invention relates to a structured packing in which a plurality of sheet-like bodies are laminated to form a block, and the plurality of sheet-like bodies are provided with at least one notch for forming a space in the vertical direction. A sheet-like body having one end is included, and the sheet-like body having the notch appearing at at least one end in the vertical direction of the structured packing, and the notch appearing at the one end It is a structured packing in which sheet-like bodies that do not exist are mixed in the stacking direction.

Further, at least one end portion of the structured packing in the vertical direction, the sheet-shaped body in which the total length of the edges in the constant width region of each of the plurality of sheet-shaped bodies is long according to the formation of the notch. , and the sheet-like body having a short total length are mixed in the stacking direction.

Further, the present invention is a sheet for structured packing constituting the structured packing.

Further, the present invention provides a first sheet-like body having a notch in at least one end in the vertical direction with respect to the direction after lamination, and a second sheet-like body having no notch in the one end. plural use,
The first sheet-like body and the second sheet-like body are laminated so as to form a block so that the one end portion overlaps in the lamination direction that coincides with the horizontal direction on the basis of the direction after lamination. It is a method for manufacturing a structured packing.

Further, each of the plurality of sheet-like bodies may have the same shape with the notch, and the end portions on the side having the notch may be alternately arranged in the stacking direction so that the upside down direction is reversed.

In addition, a plurality of sheet-like bodies having a notch at one end in the vertical direction with reference to the direction after lamination and no notch at the other end are used, and are aligned in the horizontal direction with reference to the direction after lamination. A method for producing a structured packing can also be used in which a plurality of sheet-like bodies are laminated to form a block so that the one end and the other end overlap in the lamination direction.

Further, the plurality of sheet-like bodies include a sheet-like body having no notch at least one end in the vertical direction, and the end of the sheet-like body having no notch It can also be positioned at any end in the vertical direction of the structured packing.

Also, a plurality of the notches may be formed in each of the plurality of sheet-like bodies, and each notch may have the same geometric shape. Also, the recess may be a polygonal notch.

FIG. 1 is a schematic perspective view showing an example of structured packing according to one embodiment of the present invention. FIG. 2 is a see-through perspective view showing an example of a state in which a structured packing is incorporated in a distillation column. FIG. 3 is a schematic perspective view showing an example of a state in which structured packings are stacked vertically. FIG. 4 is a schematic diagram showing the flow of liquid and gas in the structured packing contained within the distillation column. FIG. 5A is a schematic perspective view showing an example of a combination of a plurality of sheet-like bodies (sheets for structured packing) forming the structured packing. FIG. 5B is a schematic perspective view showing an example of a combination of a plurality of sheet-like bodies (sheets for structured packing) forming the structured packing. FIG. 5C is a schematic perspective view showing an example of a combination of a plurality of sheet-like bodies (sheets for structured packing) forming the structured packing. FIG. 5D is a schematic perspective view showing an example of a combination of a plurality of sheet-like bodies (sheets for structured packing) forming the structured packing. FIG. 6A is a schematic perspective view showing an example of a combination of a plurality of sheet-like bodies (sheets for structured packing) forming the structured packing. FIG. 6B is a schematic perspective view showing an example of a combination of a plurality of sheet-like bodies (sheets for structured packing) forming the structured packing. FIG. 7 is a graph showing pressure loss measurement results for one type of structured packing according to the present embodiment and a conventional structured packing.

A structured packing 2 according to an embodiment of the present invention will be described below. In addition, the expressions of the vertical direction and the horizontal direction below correspond to the directions in the state of being incorporated in the distillation column 1 (see FIG. 2) (the same applies to the expression of the single sheet-like body 21). In addition, the following expressions of "end", "upper end", and "lower end" of each sheet-like body 21 refer to neighboring portions including the endmost portion (portion at the edge).

For example, as shown in FIG. 1, the structured packing 2 of the present embodiment is formed by stacking a plurality of sheet-like bodies (sheets for structured packing) 21 in a state of being alternately folded into a wavy shape and joining them together. are block-shaped. The above-mentioned "block shape" refers to a three-dimensional shape in which a plurality of ordered packings 2 can be vertically stacked. Individual post-cut shapes when cut into . The shape shown in FIG. 1 is cylindrical. As shown in the figure, a band 22 may be arranged around the structured packing 2 to bind a plurality of sheet-like bodies 21 . . . 21 together. However, the three-dimensional shape of the ordered packing 2 is not limited to those listed above, and various three-dimensional shapes are possible. A plurality of sheet-like bodies 21 . When the sheets extend diagonally upward to the right, one adjacent sheet in the stacking direction (overlapping direction) extends diagonally upward to the left). As each of the plurality of sheet-like bodies 21 . . . 21 (hereinafter referred to as "each sheet-like body"), for example, a metal or resin sheet or net-like body is used. The stacking direction of the plurality of sheet-like bodies 21 . The stacking direction of the plurality of sheet-like bodies 21 . . . 21 is a direction perpendicular to the vertical direction. That is, the side extending in the horizontal direction of each sheet-like body 21 actually abuts against another structured packing 2 which is in contact with the plurality of structured packings 2 when stacked vertically. This is the part that makes up However, as shown in FIG. 5A or FIG. 5B, in the sheet-like body 21 in which the triangular cutouts 211 are continuously formed, the horizontally extending side does not appear, and the adjacent cutouts 211, 211 are substantially at a point. Although a shaped portion appears, it is possible for this dotted portion to come into contact with other ordered packings 2 . It should be noted that each sheet-like body 21 may have a through-hole penetrating in the thickness direction or unevenness in the thickness direction. Thus, the specific shape of the block-shaped structured packing 2 can be changed in various ways.

For example, as shown in FIG. 2, a plurality of structured packings 2 are incorporated in a distillation column 1 so as to be arranged horizontally and vertically. As shown in FIG. 3 (each sheet-like body 21 is schematically shown as a plane), the direction in which the sheet-like bodies 21 of the structured packing 2 positioned above and the structured packing 2 positioned below in the laminated state extend (macroscopic directions) are made to intersect without being in the same direction. The state shown in FIG. 3 is the orthogonal state. This makes it difficult for the lower part of the structured packing 2 positioned above to enter the upper part of the structured packing 2 positioned below, so that the structured packing 2 can be stably arranged in the distillation column 1 .

FIG. 4 schematically shows the flow of liquid and gas in the structured packing 2 contained in the distillation column 1. As shown in FIG. In order to cause gas-liquid contact in the ordered packing 2, the liquid is dispersed from above the assembly of the plurality of ordered packings 2 . steam) rises from below the assembly ("G" in the figure). In each structured packing 2, the liquid drops along the surface of the sheet-like body 21 formed in a wave shape. Then, the inside of the ordered packing 2 (specifically, the space between the adjacent sheet-like bodies 21, 21) comes into contact with the rising gas. This gas-liquid contact enables mass transfer of a liquid and a gas (vapor) containing multiple components with different boiling points so that a predetermined component has a desired concentration.

Here, conventionally, the pressure loss is large at the boundary portion where the block-shaped structured packings are superimposed in the vertical direction, that is, the portion including the contact surface in the vertical direction of the structured packings. The reason for this is presumed to be as follows. Let us focus on the relationship between the ordered packing positioned above in the laminated state (hereinafter referred to as "upper packing") and the structured packing positioned below (hereinafter referred to as "lower packing"). When the liquid transfers from the surface of each sheet-shaped body in the upper packing to the surface of each sheet-shaped body in the lower packing, the falling liquid stays at the lower end of the upper packing and forms a "pool". Occur. This "liquid pool" narrows the space through which the rising gas (vapor) can pass. As a result, passage of gas through the ordered packing is impeded, resulting in increased pressure loss at the boundary portion.

As described above, the extending directions of the sheet-like bodies of the upper filling and the lower filling are arranged not to be the same but to intersect each other (for example, perpendicularly as shown in FIG. 3). For this reason, the surface of the sheet-like body cannot be made continuous as one plane between the upper filling material and the lower filling material. Therefore, the above-mentioned "liquid pool" occurs at the boundary portion where the structured packings are superimposed in the vertical direction, which is the portion where the surface of the sheet-like body is discontinuous.

Focusing on suppressing the occurrence of such "liquid pool", in the structured packing 2 of the present embodiment, each sheet-like body 21 has a notch 211 for forming a space S at the upper end or the lower end. A sheet-like body 21 having a In this embodiment, the term "notch" is used for convenience of explanation, but the method for forming the notch 211 is not limited to the method of notching the sheet-like body 21 with a knife or the like. Notch 211 may be formed in a variety of ways. This notch 211 is formed in each sheet-like body 21 by extending each sheet-like body 21 from an extension line 21L connecting the uppermost end or the lowermost end of each sheet-like body 21, which is indicated by a two-dot chain line in FIG. 5A or 5C. It is the part that is inserted along the direction. This notch 211 is a portion that contributes to securing a space S (see FIG. 3) in the upper or lower portion of the ordered packing 2 . Note that the "spreading direction" is the macroscopic spreading direction of the entire sheet-like body 21 without considering the microscopic shape due to bending of peaks and valleys. In other words, it is the direction along the plane when the sheet-like body 21 is regarded as a planar sheet ignoring the microscopic shape. In addition, the stacking direction of the plurality of sheet-like bodies 21 . . . Specifically in the horizontal direction.

Due to the notch 211 of the sheet-like body 21, between the sheet-like body 21 having the notch 211 and another sheet-like body 21 located on the front side and the back side of the sheet-like body 21, at the boundary portion of the ordered packing 2 superimposed in the vertical direction. A space S is ensured. Since the liquid falling from the upper filler 2 can be quickly guided into the space S, the liquid falling along the sheet-like body 21 is prevented from stagnating and inhibiting the rise of the gas at the boundary portion. can. Therefore, an increase in pressure loss inside the distillation column 1 can be suppressed.

However, if the cutouts 211 are formed in both the upper and lower portions of each sheet-like body 21, the side length of each sheet-like body 21 exposed to the upper and lower surfaces of the structured packing 2 becomes short. For this reason, the length of contact with other structured packings 2 is reduced, and the load resistance of the stacked structured packings 2 in the vertical direction is reduced. Here, the portion of each sheet-like body 21 that contributes to the load bearing property coincides with an extension line 21L that connects the top end or the bottom end of each sheet-like body 21 and is exposed on the top or bottom surface of the structured packing 2. It is a side to do. For this reason, a plurality of sheet-like bodies 21 whose side lengths are long and short sheet-like bodies 21 are mixed in the stacking direction in the upper and lower portions of the block-shaped ordered packing 2 in the constant width region. Sheet-like bodies 21 . . . 21 are laminated. In the evaluation of the side length, in the present embodiment, no side exists (the side length is 0 ), but shall be evaluated as a side of extremely short length (side length exceeds 0). With the configuration of this embodiment, the notch 211 can suppress an increase in pressure loss inside the distillation column 1 . Further, the sheet-like body 21 having a long side length at the portion corresponding to the extension line 21L can reliably abut against another structured packing 2. As shown in FIG. Therefore, it is possible to suppress a decrease in the load bearing capacity of the ordered packing 2 in the vertical direction.

That is, the plurality of sheet-like bodies 21 . . . 21 include the sheet-like body 21 having the notch 211 at least one end in the vertical direction. Then, the sheet-like body 21 having the notch 211 appearing at least one end in the vertical direction of the structured packing 2 and the sheet-like body not having the notch 21 appearing at the one end are mixed in the stacking direction. ing.

In addition, at least one end of the structured packing 2 in the vertical direction, the total length of the edges in the constant width region of each of the plurality of sheet-like bodies 21 is long according to the formation of the cutouts 211. and the sheet-like body having a short total length are mixed in the stacking direction. The term "end edge" as used herein does not include the longitudinal sides of each sheet-like body 21 in the width direction, but the spreading direction of each sheet-like body 21 defining the sides corresponding to the extension lines 21L and the notches 211. It is a concept that combines the edges that enter along the .

With the above-described configuration, it is possible to provide an excellent structured packing 2 that is capable of both suppressing an increase in pressure loss and suppressing a decrease in load resistance. A specific example of the mode of "mixing in the stacking direction" will be described later.

5A to 5D are schematic diagrams showing examples of combinations of a plurality of sheet-like bodies 21 . . . 21. FIG. For the sake of simplification, each sheet-like body 21 is shown in a flat plate shape, not in a wavy state.

The cutout 211 is a geometrically shaped cutout that is recessed inside (the central portion of the sheet-like body 21) from an extension line 21L (indicated by a two-dot chain line in FIG. 5A or FIG. 5C) of the upper edge or the lower edge of each sheet-like body 21. is. More specifically, it is a polygonal notch. By making the notch 211 have such a shape, the notch 211 can be easily formed as compared with an irregular shape having no regularity. This notch 211 can be provided at both the upper end and the lower end of the sheet-like body 21, but in that case, it is possible to prevent the load bearing capacity of the structured packing 2 from deteriorating in the vertical direction as described above. Therefore, it is necessary to devise a lamination method.

5A and 5B show that the notch 211 has a triangular (isosceles triangular) shape. 5C and 5D show that the shape of the notch 211 is rectangular. The shape of the notch 211 is not limited to those illustrated in FIGS. 5A to 5D, and may be various polygonal shapes such as a semicircular shape and a trapezoidal shape.

If the shape of the notch 211 is polygonal (a shape in which the corners are not rounded), cracks may occur from the corners depending on the stress applied to the sheet-like body 21 . In order to eliminate this possibility, the shape of the notch 211 can be a shape without corners such as a semicircle, or the corners can be rounded.

In the form shown in FIG. 5A or 5B, a plurality of triangular cutouts 211 are arranged at intervals (closely), and at the end of each sheet-like body 21 on the side where the cutouts 211 are formed, There are no or only a few portions that appear straight when viewed from the front and the rear of the ordered packing 2 (in the actual ordered packing 2, portions that appear as wavy edge shapes when viewed from the top and bottom). It is a form that does not. The notch 211 of this form is composed of two obliquely extending line segments entering along the spreading direction of each sheet-like body 21 from an extension line 21L connecting the uppermost end or the lowermost end of each sheet-like body 21 and the extension line 21L. This is an area defined by the line 21L. The constituent material of each sheet-like body 21 does not exist inside the region. This allows the passage of gases and liquids inside the region. In this embodiment, each sheet-like body 21 has a plurality of notches 211 . By dividing the side corresponding to the extension line 21L connecting the lower ends, the side 213 (including the case where the side is dotted) intermittently appears between the adjacent cutouts 211, 211. . On the other hand, a continuous side 212 appears at the end of each sheet-like body 21 on the side where the notch 211 is not formed.

On the other hand, in the form shown in FIG. 5C or FIG. 5D , a plurality of rectangular cutouts 211 are arranged (dispersed) at intervals, and each sheet-like body 21 is formed with the cutouts 211 at the end thereof. , the linear portion appears intermittently in the front view of the ordered packing 2 . The notch 211 of this form includes two vertically extending line segments that enter along the spread direction of each sheet-like body 21 from an extension line 21L connecting the uppermost end or the lowermost end of each sheet-like body 21 and the corresponding line segment. It is an area defined by three line segments, one line segment extending horizontally from the ends of the two line segments, and the extension line 21L. The interior of the region is permeable for gases and liquids. The constituent material of each sheet-like body 21 does not exist inside the region. This allows the passage of gases and liquids inside the region. Also in this embodiment, each sheet-like body 21 is provided with a plurality of notches 211 . . . A side 213 intermittently appears between adjacent notches 211 and 211 by dividing the side corresponding to the extension line 21L connecting each of them. On the other hand, a continuous side 212 appears at the end of each sheet-like body 21 on the side where the notch 211 is not formed.

In this manner, the plurality of cutouts 211 may be formed closely or may be dispersed. Moreover, the size of the notch 211 occupying each sheet-like body 21 can be set variously. However, if the size and arrangement of the cutouts 211 exceed the size and arrangement sufficient to suppress the increase in pressure loss, the efficiency of mass transfer in the structured packing 2 will be reduced. It is desirable to be designed

In addition, the notches 211 of different shapes are formed together in one sheet-like body 21, or the notches 211 of one sheet-like body 21 and the notch 211 of the other sheet-like body 21 adjacent in the stacking direction are made to have different shapes. You can also

As shown in FIGS. 5A and 5C, the structured packing 2 of the present embodiment has a plurality of sheet-like bodies 21 . sheet-like bodies 21, and each sheet-like body 21 can be stacked upside down. Specifically, in each part in the vertical direction of the block-shaped structured packing 2, the sheet-like body 21 (21a) having the notch 211 is followed by the sheet-like body 21 without the notch 211 in the corresponding part in the vertical direction. (21b) are laminated. According to such a configuration, since the sheet-like body 21 can be shared, there is an advantage that the manufacturing cost of the sheet-like body 21 can be reduced.

On the other hand, as shown in FIGS. 5B and 5D, a sheet-like body (first sheet-like body) 21 (21a) in which notches 211 are formed and a sheet-like body in which both ends in the vertical direction are not formed with notches 211 are formed. The bodies (second sheet-like bodies) 21 (21c) can also be alternately laminated. In the embodiment shown in FIGS. 5B and 5D, the notch 211 is formed only at the lower end of the sheet-like body 21 (21a). A "liquid puddle" generated at the boundary portion where the ordered packings 2 are superimposed in the vertical direction is mainly generated in the lower part of each structured packing 2, so a notch 211 is formed at the lower end of the sheet-like body 21 (21a). If so, most of the "puddles" can be eliminated.

5B and 5D, the sheet-like body 21 (21b) in which the notch 211 is formed only at the upper end of the sheet-like body 21 and both ends in the vertical direction are not shown. The sheet-like bodies 21 (21c) in which the cutouts 211 are not formed can also be alternately laminated.

Furthermore, as shown in FIGS. 6A and 6B, a sheet-like body 21 having cutouts 211 formed at both ends in the vertical direction, and a sheet-like body 21 having cutouts 211 formed at either end in the vertical direction. can be alternately stacked. Specifically, in the one shown in FIG. 6A, in the lower part of the block-shaped structured packing 2, the sheet-like body 21 (21d) having notches 211 at the top and bottom is followed by the notches 211 at the corresponding portions in the downward direction. Sheet-like bodies 21 (21b) having no voids are laminated. On the other hand, in the case shown in FIG. 6B, in the upper part of the block-shaped structured packing 2, next to the sheet-like body 21 (21d) having the notches 211 at the top and bottom, there is no notch 211 in the corresponding part in the upward direction. Sheet-like bodies 21 (21a) are laminated. It is also possible to configure the ordered packing 2 in this way.

In addition, as shown in FIGS. 5A to 5D, the structured packing 2 of the present embodiment has a continuous side 212 with no notch 211 in each sheet-like body 21, and a side ( In the actual sheet-like body 21 , the edges appearing as wavy edges in plan view and bottom view) are positioned corresponding to the upper and lower surfaces of the block-shaped structured packing 2 . According to such a configuration, the continuous side 212 abuts on another ordered packing 2 adjacent in the vertical direction. Therefore, the continuous side 212 can surely bear the load. Therefore, the ordered packing 2 is less likely to buckle, such as part of the upper packing 2 entering the lower packing 2 , and the ordered packing 2 can be stably arranged in the distillation column 1 .

In the present embodiment, two stacked sheet-like bodies 21, 21 form one set, and the ordered packing 2 is composed of a plurality of sets. However, it is not limited to this, and it is also possible to form a set of three sheets by forming a notch 211 only in one of the three sheet-like bodies 21 . The layering pattern of body 21 can vary.

Next, the structured packing 2 of this embodiment is a sheet-like body 21 having continuous sides 212 appearing at one end in the vertical direction and intermittent sides 213 appearing at the other end due to cutouts 211. It is manufactured by stacking a plurality of sheet-like bodies 21 . The notch 211 is formed by punching using a mold or cutting using a cutting blade. As mentioned above, the method for forming the notch 211 is not limited to "notching", and the notch 211 can be formed in various ways. The size (area in front view) of the sheet-like body 21 corresponds to the block shape of the completed ordered packing 2 .

In manufacturing the sheet-like body 21 having the cutouts 211, the order of the wavy processing and the formation processing of the cutouts 211 does not matter. That is, it is also possible to form the cutouts 211 in the flat sheet-like body 21 and then bend the sheet-like body 21 in a wavy shape. Conversely, it is also possible to first bend the flat sheet-like body 21 into a wavy shape and then form the cutouts 211 in the bent sheet-like body 21 .

Next, as the structured packing 2 of this embodiment, the pressure loss of the structured packing 2 in which the sheet-like bodies 21 having the shape shown in FIG. , the results of measurements made by the inventor are shown in the graph of FIG. Experiments were carried out by arranging structured packings inside a cylindrical body prepared as a simulated tower for experiments. The fluids used in the experiment were air and water, the liquid-gas ratio (ratio of water flow rate to air flow rate per unit cross-sectional area) was 0.8, and the experiment was conducted under atmospheric pressure.

"F-Factor" on the horizontal axis in FIG. 7 is obtained by multiplying the gas velocity (m/s) in the experimental simulation tower by the square root of the gas density (unit: kg/m ³ ).

In FIG. 7, the measurement results of the structured packing 2 in which the cutouts 211 are formed as shown in FIG. 5A in the present embodiment are plotted with circles, and the measurement results of the conventional structured packing are plotted with squares. ing. According to this experiment, in the range of "F-Factor" of less than 2.7, the pressure loss is almost the same, but in the range of 2.7 or more, as described above, the structured packing 2 of this embodiment has a pressure drop of It was actually confirmed that the loss was significantly reduced. Therefore, it is confirmed that the superiority of this embodiment is not limited to fictitious theory but is actually exhibited.

As described above, according to the present embodiment, an increase in pressure loss inside the distillation column 1 can be suppressed by using the structured packing 2 in which the notch 211 is formed in each of the sheet-like bodies 21 . For this reason, in the structured packing 2 of the present embodiment, an increase in pressure loss at the boundary portion where the layers are superimposed in the vertical direction is suppressed, so it is expected that the operating range of the distillation column 1 can be expanded.

Finally, the configuration and action of the above embodiment will be collectively described below. The above-described embodiment is a structured packing 2 in which a plurality of sheet-like bodies 21 . . . 21 are laminated to form a block. A sheet-like body 21 having one notch 211 at at least one end in the vertical direction is included, and the sheet-like body having the notch 211 at at least one end in the vertical direction of the structured packing 2 21 and the sheet-like body 21 in which the notch 211 does not appear at one end thereof are mixed in the stacking direction.

In addition, at least one end of the structured packing 2 in the vertical direction, the total length of the edge of each of the plurality of sheet-like bodies 21 . . . The ordered packing 2 has a long sheet-like body 21 and a sheet-like body 21 having a short total length mixed in the stacking direction.

Further, the above embodiment is a sheet 21 for structured packing constituting the structured packing 2 .

Further, in the above-described embodiment, the first sheet-like body 21 having a notch 211 at least one end in the vertical direction with respect to the direction after lamination, and the second sheet-like body having no notch 211 at one end A plurality of the first sheet-like bodies 21 and the second sheet-like bodies 21 are used so that the one end portion overlaps in the stacking direction that matches the horizontal direction on the basis of the direction after stacking. is a method for manufacturing the ordered packing 2 by laminating so as to mix and form a block.

According to each of the above configurations, the notch 211 formed in each of the sheet-like bodies 21 secures the space S at the boundary portion between the plurality of ordered packings 2 stacked vertically. Due to this space S, it is possible to prevent the liquid falling along the sheet-like body 21 from stagnating and hindering the rise of the gas. Therefore, an increase in pressure loss inside the distillation column 1 can be suppressed.

Each of the plurality of sheet-like bodies 21...21 has the same shape with the notch 211, and the ends on the side having the notch 211 are alternately arranged in the stacking direction so that the upside down direction is reversed. You can also

In addition, a plurality of sheet-like bodies 21 having a notch 211 at one end in the vertical direction with reference to the direction after lamination and having no notch 211 at the other end are used, and are horizontal with respect to the direction after lamination. A plurality of sheet-like bodies 21 . .

According to each configuration described above, the shape of each of the plurality of sheet-like bodies 21 can be made common. Therefore, the manufacturing cost of the sheet-like body 21 can be reduced.

In addition, the plurality of sheet-like bodies 21 . The non-existent end can be positioned at any end in the vertical direction of the structured packing 2 .

According to this configuration, the end portion where the notch 211 does not exist is brought into contact with another ordered packing 2 adjacent in the vertical direction. Therefore, the ordered packing 2 is less likely to buckle, and a plurality of ordered packings 2 can be stably arranged inside the distillation column 1 .

A plurality of cutouts 211 may be formed in each of the plurality of sheet-like bodies 21 . . . 21, and each cutout 211 may have the same geometric shape. Also, the notch 211 may be a polygonal notch.

According to this configuration, the notch 211 is easier to form because the notch 211 is a geometric or polygonal notch compared to an irregular shape.

1 distillation column 2 structured packing 21 sheet-like body (sheet for structured packing)
21a sheet-like body with notch at lower end, first sheet-like body 21b sheet-like body with notch at upper end 21c sheet-like body without notch at upper and lower ends, second sheet-like body 21L top end of each sheet-like body or an extension line connecting each of the bottom ends 211 notch 212 continuous side 213 intermittent side S space

Claims (9)

A structured packing in which a plurality of sheet-like bodies are laminated to form a block,
The plurality of sheet-like bodies include a sheet-like body having a plurality of notches in at least one end in the vertical direction for forming a space,
The notch has a polygonal shape with rounded corners,
The sheet-like body having the plurality of cutouts has a form in which dotted sides appear between adjacent cutouts,
A sheet-like body having the notch appearing at least one end in the vertical direction of the structured packing and a sheet-like body having the notch appearing at one end are mixed in the stacking direction,
When the plurality of structured packings are arranged vertically so that the extending directions of the sheet-like body intersect, the edges where the notch does not appear are in contact with each other vertically. The structured packing is arranged so that the lower part of the upper ordered packing does not enter the upper part of the lower ordered packing due to contact . at least one end in the vertical direction of the structured packing, the sheet-like body in which the total length of the edges in the constant width region of each of the plurality of sheet-like bodies is long in accordance with the formation of the notches; 2. The structured packing according to claim 1, wherein sheet-like bodies having a short total length are mixed in the stacking direction. Each of the plurality of sheet-like bodies has the same shape with the notch, and the ends on the side having the notch are alternately arranged in the stacking direction so as to be upside down. 2. The structured packing according to 2. The plurality of sheet-like bodies include a sheet-like body that does not have the notch in at least one end in the vertical direction,
The structured packing according to any one of claims 1 to 3, wherein the ends of the sheet-like body where the notches are not present are positioned at any of the ends in the vertical direction of the structured packing. The structured packing according to any one of claims 1 to 4, wherein a plurality of said notches are formed in each of said plurality of sheet-like bodies, and each notch has the same geometric shape. A structured packing sheet constituting the structured packing according to any one of claims 1 to 5. A method for manufacturing the sheet for structured packing according to claim 6,
A method for producing a sheet for ordered packing, wherein the notches are formed by punching using a die. Using a plurality of first sheet-like bodies having a plurality of notches in at least one end in the vertical direction with respect to the direction after lamination and a plurality of second sheet-like bodies having no notch in the one end,
The notch has a polygonal shape with rounded corners,
The first sheet-like body has a form in which dotted sides appear between adjacent notches,
The first sheet-like body and the second sheet-like body are laminated so as to form a block so that the one end portion overlaps in the lamination direction that coincides with the horizontal direction on the basis of the direction after lamination. is a regular packing of
When arranging the ends without notches, when arranging a plurality of structured packings in the vertical direction so that the extending directions of the sheet-like body intersect, the top and bottom of the ends without notches A method for producing an ordered packing , wherein the end portion is arranged so that the lower portion of the ordered packing located above does not enter the upper portion of the ordered packing located below due to contact . Using a plurality of sheet-like bodies having a plurality of notches at one end in the vertical direction with respect to the direction after lamination and having no notch at the other end,
The notch has a polygonal shape with rounded corners,
The plurality of cutouts are formed so that dotted sides appear between adjacent cutouts,
A block-shaped ordered packing is formed by stacking a plurality of sheet-like bodies so that the one end overlaps the other end in a stacking direction that coincides with the horizontal direction after stacking. There is
When arranging the ends having no notches, when arranging a plurality of structured packings vertically so that the directions in which the sheet-like body extends intersect, the ends having no notches A method for manufacturing structured packing, wherein the end portion is arranged so that the lower portion of the structured packing located above does not enter the upper portion of the ordered packing located below .

Images