JPH1062097A - Wall flow preventing implement for material and/or heat exchange tower - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent stagnation of a gas flow rising in the vicinity of the inner wall of a tower and to lead a liquid flowing down along the wall of the tower, into a packed material assembly without fail, in a wall flow preventing implement used in a material and/or heat exchange tower. SOLUTION: A wall flow preventing implement 2 is constructed of a wall flow preventing member 1 formed by a method wherein cuts 4 in the longitudinal direction are formed at intervals in the upper part of a belt-like plate material stretching in the circumferential direction along the lateral circumferential edge part of a packed material assembly 1 and cut-formed parts 3 are bent outward. In a belt-like part 7 stretching in the circumferential direction of the wall flow preventing member 1, holes 6 are formed by forming a plurality of cuts 5 and by bending them inward, and cut-formed parts in the belt-like part 7 are joined with the packed material assembly.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a material and / or a heat exchange tower in which a liquid and a gas are brought into countercurrent contact with each other and / or a heat exchange tower. The present invention relates to a member attached to a section for preventing liquid from flowing on the inner wall surface of the tower.

[0002]

2. Description of the Related Art Generally, the above-mentioned material and / or packing material to be packed in a heat exchange tower is a corrugated sheet-like base material or a net-like base material whose creases are formed on the surface. It is formed by combining a plurality of members such that the folds intersect each other to form an assembling member having a cross section adapted to the inner periphery of the column which is usually cylindrical. During the operation of the tower, when the liquid flows down from above the tower and the gas rises from below, the flowing liquid comes into contact with the gas while spreading laterally on the surface of each sheet-like base material constituting the filler. Therefore, the gas-liquid contact efficiency is improved.

[0003] In the operation of such a column, in order to obtain the best gas-liquid contacting efficiency, the gas preferably rises uniformly in the column at a uniform speed and over the entire cross section of the column. In reality, it is known that the rising speed of the gas tends to be higher in the center of the tower than in the vicinity of the inner wall surface of the tower. The reason for this is as follows. When gas is raised from below the tower without any packing material in the tower, the rising speed of the gas near the inner wall surface of the tower is increased by friction between the gas flow and the inner wall surface of the tower. Is slower than the central part. This phenomenon also occurs when the column is filled with packing material.In an actual packed tower, the rising speed of the gas near the inner wall of the tower is smaller than the rising speed of the gas in the center of the tower. It will be. Such an imbalance in the rising speed of the gas affects the flow of the liquid flowing down from above. That is, since the liquid flows down inside the column while being in contact with the upward flow of the gas, the liquid flows preferentially at a position where the gas rises at a higher speed than at a higher position. As a result, during the operation of the tower, the liquid flow gathers around the inner wall surface of the tower, and the liquid flows down along the inner wall surface,
There has been a problem that the gas-liquid contact efficiency is reduced.

In order to solve such a problem, a so-called wall flow prevention device is used. FIG. 1 shows an example of a conventionally used wall flow prevention device. The conventional wall flow prevention device 2 is attached in a substantially horizontal direction in close contact with a side peripheral portion of the filler laminated material 1, and encloses the peripheral portion of the filler laminated material over the entire periphery. The longitudinally extending strip-shaped member is vertically spaced apart at the top of the band-shaped member, and the notched portion is bent outward so that the end of the formed bent portion 3 contacts the inner wall of the tower. Alternatively, they are formed so as to be extremely close to each other. By attaching such a wall flow prevention device to the side peripheral portion of the glued laminated wood,
The liquid flowing down along the inner wall of the column is guided by the folds 3 of the device into the interior of the packing glue, where it develops laterally in the packing and, as a result, is reduced by the generation of wall flow of liquid. The gas-liquid contact efficiency, which has been performed, can be improved.

However, such a conventional wall flow prevention device has the following problems. That is, by attaching the wall flow prevention device having such a configuration, the liquid flowing on the inner wall surface of the tower is surely guided to the inside of the filler laminate, and the wall flow of the liquid is eliminated at this portion. at the same time,
The bent portion of the wall flow prevention device also blocks the gas flow that rises in the gap between the inner wall of the tower and the packing material glue. Is further promoted, and as a result, the problem that the liquid flowing down in the packing glue drifts in the direction of the inner wall surface of the tower is further promoted, and the gas-liquid contact efficiency by preventing the wall flow of the liquid is further enhanced. However, there is a problem that a great effect cannot be obtained as a whole because the effect of improving the quality is reduced.

As another problem, when such a wall flow preventer is wound around a filler laminate in a band shape, a contact point between the peripheral end surface of the filler laminate and the strip portion of the wall flow preventer is formed. There was a problem that the sticking was difficult and sometimes a gap was formed between the filler laminate and the wall flow preventer, and the liquid flowed down the gap.

[0007]

SUMMARY OF THE INVENTION The present inventor has made extensive researches to overcome the above-mentioned disadvantages of the prior art, and as a result, has found that a strip-shaped portion of a conventional wall flow preventer, that is, a filler assembly. A plurality of cuts are formed in a portion wound along the peripheral edge of the material, and the cut portion is bent inward to form a bent portion, thereby facilitating joining with the filler laminate. At the same time, the hole formed by bending the notch provides a passage for the gas flow rising near the inner wall surface of the tower, and as a result, the effect of preventing the gas rising flow near the inner wall surface of the tower from being retained is obtained. And found that the present invention was completed.

That is, according to the present invention, a liquid is supplied from above and a gas is supplied from below, and gas and liquid are brought into contact with each other to fill the inside of a tower for performing a substance and / or heat exchange between the two substances. For preventing wall flow of liquid in the packed tower, which is attached in close contact with the side peripheral portion of the filler glue, wherein the device extends in the circumferential direction along the side peripheral portion of the filler glue. A vertical cut is made at an interval in the upper part of a strip-shaped plate material extending in a direction, and the cut-out portion is bent outward to form a wall flow preventing member. A plurality of cuts are formed in a band-like portion extending in the direction, and a hole is formed by bending the cut-out portion inward, and the cut-out portion in the band-like portion is joined to the filler laminate. About wall flow protection device according to claim.

Hereinafter, a wall flow prevention device according to the present invention will be described with reference to the drawings.

FIG. 2 shows a state in which the device for preventing wall flow according to the present invention is attached to the outer peripheral edge of a tower filler laminate.

The filler laminate 1 is formed by combining corrugated sheet-like base materials so that the corrugations intersect each other, and is formed into a cylindrical shape in accordance with the internal formation of a column which is usually cylindrical. . The wall flow prevention device 2 of the embodiment shown in FIG. 2 is attached in a substantially horizontal direction in close contact with the side peripheral portion of the filler laminate 1 and covers the peripheral edge of the filler laminate over the entire circumference. It is formed by making vertical cuts 4 at intervals above the horizontal strip-shaped member and bending the cut portions 3 outward. In the strip-shaped portion 7, a plurality of cuts 5 are formed at a certain interval, and the cuts 5 are bent inward to form holes 6. FIG. 3 shows the shape of the notch 5 and the hole 6 of the band-like portion as viewed from the inside of the wall flow prevention device.

The portion where the cut 5 is bent inward is joined to the filler laminate (see FIG. 4). The joining between the cutout portion 5 and the filler laminated material can be performed using a method known in the art, such as heat welding or bonding. As described above, in order to join the bent portion of the cut 5 to the filler laminate, it is preferable that the center line of the cut is formed so as to be inclined with respect to the vertical axis of the filler laminate. The angle of inclination is desirably formed so that the center line of the cut has an angle of at least 5 ° or more with respect to the vertical axis of the filler laminate. In the embodiment shown in FIGS. 3 and 4, the center line of the cut has an inclination angle of 90 ° with respect to the vertical axis of the filler laminate.

By forming such a notch 5 in the strip portion of the wall flow prevention device, two effects can be obtained.

First, there is an effect that the upward flow of gas can be prevented from being hindered by the formed holes 6. In the conventional wall flow prevention device, since the gap between the outer peripheral edge of the filler laminate and the inner wall surface of the tower is closed by the bent portion 3 of the wall flow prevention device, the gas rising along the inner wall surface of the tower. However, there is a problem that the gas stagnates in this portion and prevents a smooth upward flow of gas. However, in the wall flow prevention device according to the present invention, the hole 6 is formed by the cut 5 of the strip portion 7, and the gas flow can flow toward the inside of the filler through the hole 6. It is possible to eliminate the pool, and as a result, it is possible to prevent the smooth flow of the gas and the generation of the wall flow of the liquid.

Another effect obtained by the wall flow prevention device according to the present invention is that the center line of the cut 5 formed in the band-shaped portion is inclined with respect to the vertical axis of the filler laminated material, so that the cut portion is formed. 5 can be easily brought into contact with the surface of the laminated material when bending the inward direction of the filler laminated material, and as a result, the cut portion 5 and the filler material can be assembled by spot welding or the like. The effect is that the contact portion with the material 1 can be easily fixed. In this regard, the filler glue is typically 0.1 mm thick.
A thin plate having a thickness of about mm is corrugated, and a plurality of thin plates are arranged in parallel with the tower axis (that is, in the vertical direction) so that the folds intersect each other. Therefore, the end face of each plate material constituting the laminated wood has a zigzag shape in the vertical direction. Therefore, the notch 5
Is formed in parallel with the tower axis direction (that is, in the vertical direction), when the cut portion 5 is bent inward, it hits the end of the plate material and it is difficult to bend deeply. In addition, since the plate material constituting the laminated wood is as thin as about 0.1 mm, it is difficult to weld the cut 5 to the plate material at point contact with the end surface of the plate material. In order to solve this problem, in the present invention, the notch 5 is provided with an inclination angle. For example, if the notch 5 is given an angle of 90 ° with respect to the vertical axis of the laminated wood (that is, if the notch 5 is formed horizontally), when the notch 5 is bent, the surface of the notch 5 becomes Since it is possible to come into contact with the plate material of the laminated wood from the lateral direction, the notch 5 and the plate material can come into contact with each other in a plane (see FIG. 4). If this contact surface is spot-welded, sufficient fixation is possible. This allows
Strong bonding between the wall flow prevention device and the filler glued laminated material becomes possible. Further, in the conventional wall flow prevention device, since the liquid guided into the filler by the wall flow prevention device has a tendency to flow down the gap between the wall flow prevention device and the filler, it is troublesome. Although there was a problem that the liquid introduced into the filler did not sufficiently spread over the entirety of the filler, the wall flow prevention device according to the present invention has a problem in that To improve the degree of contact (adhesion)
The effect is obtained that the liquid guided by the wall flow prevention device is reliably spread inside the filler.

In the wall flow prevention device according to the present invention, by forming such cuts 5 and holes 6 in the band-like portion 7 of the wall flow prevention member, the gas flow rising near the inner wall surface of the tower is formed. Can flow upward through this hole, so compared to using a conventional wall flow prevention device,
The gas flow rising near the inner wall of the tower does not stagnate,
The improvement of the gas-liquid contact efficiency by preventing the wall flow of the liquid is more greatly achieved. Also, since the bent cut portion 5 can be easily fixed to the laminated wood plate, the degree of adhesion between the wall flow prevention device and the filler laminated wood can be increased. It has become easier to reliably guide the liquid into the interior of the glue, although the liquid has flowed down the gap created between the instrument and the glulam.

In the wall flow prevention member according to the present invention, the shape, size, inclination, position, interval, and the like of the notch 5 are as follows.
Various parameters, such as the amount of gas flow during the actual operation of the column, can empirically select the best mode.

The shape of the notch 5 according to the present invention is as follows.
It may be U-shaped, V-shaped or ladle-shaped. In practical terms, the length is preferably about 10 mm and the width is preferably about 5 mm.

[0019]

As described above, the wall flow prevention device according to the present invention has the above-described structure, so that the stagnation of the gas flow that rises in the gap between the tower wall and the outer periphery of the packing material glue is prevented, and The liquid flowing down the wall can be reliably introduced into the packing material glue, and the reduction of gas-liquid contact efficiency in the substance and / or heat exchange tower due to the liquid flow drift is effectively eliminated. Can be.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a conventional wall flow prevention device.

FIG. 2 is a diagram illustrating a configuration of a wall flow prevention device according to one embodiment of the present invention.

FIG. 3 is a partially enlarged view showing cuts and holes formed in a band portion of the wall flow prevention device of the present invention.

FIG. 4 is a partially enlarged view showing a contact state between a cut portion and a filler of the wall flow prevention device of the present invention.

Claims (1)

[Claims] 1. A liquid is supplied from above and a gas is supplied from below,
By bringing the gas and liquid into contact with each other inside the packed tower, which is attached in close contact with the side peripheral portion of the glued laminated material of the filler packed inside the tower performing the substance and / or heat exchange between the two substances A device for preventing wall flow of a liquid, the device making a longitudinal cut at an interval on an upper part of a band-shaped plate material extending in a circumferential direction along a side peripheral edge of a filler laminate, It is constituted by a wall flow prevention member formed by bending the cut portion outward, and a plurality of cuts are formed in a band-shaped portion extending in the circumferential direction of the wall flow prevention member, and the cut portion is formed. A wall flow prevention device, wherein a hole is formed by being bent inward, and a cutout in the band-shaped portion is joined to a filler laminate.